/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 17:48:01,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 17:48:01,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 17:48:01,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 17:48:01,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 17:48:01,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 17:48:01,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 17:48:01,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 17:48:01,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 17:48:01,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 17:48:01,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 17:48:01,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 17:48:01,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 17:48:01,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 17:48:01,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 17:48:01,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 17:48:01,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 17:48:01,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 17:48:01,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 17:48:01,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 17:48:01,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 17:48:01,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 17:48:01,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 17:48:01,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 17:48:01,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 17:48:01,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-01-16 17:48:01,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 17:48:01,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 17:48:01,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 17:48:01,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 17:48:01,863 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 17:48:01,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 17:48:01,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 17:48:01,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 17:48:01,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 17:48:01,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 17:48:01,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 17:48:01,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 17:48:01,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 17:48:01,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 17:48:01,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 17:48:01,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 17:48:01,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 17:48:01,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 17:48:01,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 17:48:01,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 17:48:01,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 17:48:01,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 17:48:01,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 17:48:01,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 17:48:01,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 17:48:01,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 17:48:01,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 17:48:01,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 17:48:01,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-01-16 17:48:01,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 17:48:02,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 17:48:02,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 17:48:02,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 17:48:02,172 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 17:48:02,173 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 17:48:02,174 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl [2020-01-16 17:48:02,174 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl' [2020-01-16 17:48:02,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 17:48:02,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 17:48:02,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 17:48:02,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 17:48:02,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 17:48:02,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... [2020-01-16 17:48:02,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... [2020-01-16 17:48:02,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 17:48:02,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 17:48:02,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 17:48:02,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 17:48:02,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... [2020-01-16 17:48:02,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... [2020-01-16 17:48:02,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... [2020-01-16 17:48:02,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... [2020-01-16 17:48:02,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... [2020-01-16 17:48:02,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... [2020-01-16 17:48:02,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... [2020-01-16 17:48:02,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 17:48:02,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 17:48:02,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 17:48:02,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 17:48:02,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 17:48:02,364 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 17:48:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 17:48:02,364 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 17:48:02,365 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 17:48:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 17:48:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 17:48:02,365 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 17:48:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 17:48:02,366 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 17:48:02,366 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 17:48:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 17:48:02,366 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 17:48:02,367 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 17:48:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 17:48:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 17:48:02,367 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2020-01-16 17:48:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2020-01-16 17:48:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2020-01-16 17:48:02,368 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 17:48:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 17:48:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 17:48:02,368 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 17:48:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 17:48:02,369 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 17:48:02,369 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 17:48:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 17:48:02,369 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 17:48:02,369 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2020-01-16 17:48:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2020-01-16 17:48:02,370 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2020-01-16 17:48:02,370 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-01-16 17:48:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-01-16 17:48:02,370 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-01-16 17:48:02,371 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-01-16 17:48:02,371 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-01-16 17:48:02,371 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-01-16 17:48:02,373 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 17:48:02,694 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 17:48:02,694 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 17:48:02,696 INFO L202 PluginConnector]: Adding new model example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 05:48:02 BoogieIcfgContainer [2020-01-16 17:48:02,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 17:48:02,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 17:48:02,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 17:48:02,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 17:48:02,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 05:48:02" (1/2) ... [2020-01-16 17:48:02,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ab2ee4 and model type example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 05:48:02, skipping insertion in model container [2020-01-16 17:48:02,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 05:48:02" (2/2) ... [2020-01-16 17:48:02,717 INFO L109 eAbstractionObserver]: Analyzing ICFG example_11.bpl [2020-01-16 17:48:02,729 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 17:48:02,730 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 17:48:02,736 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 17:48:02,737 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 17:48:02,998 INFO L250 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-01-16 17:48:03,017 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 17:48:03,018 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 17:48:03,018 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 17:48:03,018 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 17:48:03,018 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 17:48:03,018 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 17:48:03,019 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 17:48:03,019 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 17:48:03,037 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 168 transitions [2020-01-16 17:48:03,039 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 92 places, 168 transitions [2020-01-16 17:48:13,056 INFO L129 PetriNetUnfolder]: 9217/11300 cut-off events. [2020-01-16 17:48:13,057 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2020-01-16 17:48:13,227 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22598 conditions, 11300 events. 9217/11300 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 45887 event pairs. 0/11299 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2020-01-16 17:48:13,473 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 92 places, 168 transitions [2020-01-16 17:48:22,449 INFO L129 PetriNetUnfolder]: 9217/11300 cut-off events. [2020-01-16 17:48:22,450 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2020-01-16 17:48:22,543 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22598 conditions, 11300 events. 9217/11300 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 45887 event pairs. 0/11299 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2020-01-16 17:48:22,722 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5060 [2020-01-16 17:48:22,723 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 17:48:23,058 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1375 [2020-01-16 17:48:23,059 INFO L214 etLargeBlockEncoding]: Total number of compositions: 12 [2020-01-16 17:48:23,063 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 156 transitions [2020-01-16 17:50:07,066 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 179196 states. [2020-01-16 17:50:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 179196 states. [2020-01-16 17:50:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:50:07,798 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:50:07,799 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:50:07,800 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:50:07,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:50:07,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1136777304, now seen corresponding path program 1 times [2020-01-16 17:50:07,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:50:07,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229255426] [2020-01-16 17:50:07,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:50:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:50:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:50:07,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229255426] [2020-01-16 17:50:07,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:50:07,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:50:07,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707302145] [2020-01-16 17:50:07,984 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:50:07,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:50:07,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:50:08,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:50:08,002 INFO L87 Difference]: Start difference. First operand 179196 states. Second operand 3 states. [2020-01-16 17:50:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:50:10,160 INFO L93 Difference]: Finished difference Result 146172 states and 1021320 transitions. [2020-01-16 17:50:10,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:50:10,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:50:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:50:11,242 INFO L225 Difference]: With dead ends: 146172 [2020-01-16 17:50:11,243 INFO L226 Difference]: Without dead ends: 146171 [2020-01-16 17:50:11,244 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:50:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146171 states. [2020-01-16 17:50:31,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146171 to 146171. [2020-01-16 17:50:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146171 states. [2020-01-16 17:50:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146171 states to 146171 states and 1021319 transitions. [2020-01-16 17:50:33,629 INFO L78 Accepts]: Start accepts. Automaton has 146171 states and 1021319 transitions. Word has length 34 [2020-01-16 17:50:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:50:33,630 INFO L478 AbstractCegarLoop]: Abstraction has 146171 states and 1021319 transitions. [2020-01-16 17:50:33,630 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:50:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 146171 states and 1021319 transitions. [2020-01-16 17:50:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:50:34,144 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:50:34,145 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:50:34,145 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:50:34,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:50:34,146 INFO L82 PathProgramCache]: Analyzing trace with hash -356386054, now seen corresponding path program 1 times [2020-01-16 17:50:34,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:50:34,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451669298] [2020-01-16 17:50:34,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:50:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:50:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:50:34,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451669298] [2020-01-16 17:50:34,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:50:34,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:50:34,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177320641] [2020-01-16 17:50:34,223 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:50:34,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:50:34,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:50:34,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:50:34,224 INFO L87 Difference]: Start difference. First operand 146171 states and 1021319 transitions. Second operand 3 states. [2020-01-16 17:50:43,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:50:43,681 INFO L93 Difference]: Finished difference Result 145147 states and 1010567 transitions. [2020-01-16 17:50:43,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:50:43,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:50:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:50:44,577 INFO L225 Difference]: With dead ends: 145147 [2020-01-16 17:50:44,577 INFO L226 Difference]: Without dead ends: 145147 [2020-01-16 17:50:44,579 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:50:51,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145147 states. [2020-01-16 17:50:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145147 to 145147. [2020-01-16 17:50:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145147 states. [2020-01-16 17:51:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145147 states to 145147 states and 1010567 transitions. [2020-01-16 17:51:06,492 INFO L78 Accepts]: Start accepts. Automaton has 145147 states and 1010567 transitions. Word has length 34 [2020-01-16 17:51:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:51:06,492 INFO L478 AbstractCegarLoop]: Abstraction has 145147 states and 1010567 transitions. [2020-01-16 17:51:06,492 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:51:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand 145147 states and 1010567 transitions. [2020-01-16 17:51:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:51:06,929 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:51:06,929 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:51:06,929 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:51:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:51:06,930 INFO L82 PathProgramCache]: Analyzing trace with hash 935006680, now seen corresponding path program 1 times [2020-01-16 17:51:06,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:51:06,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291606942] [2020-01-16 17:51:06,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:51:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:51:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:51:06,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291606942] [2020-01-16 17:51:06,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:51:06,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:51:06,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663471120] [2020-01-16 17:51:06,975 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:51:06,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:51:06,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:51:06,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:51:06,976 INFO L87 Difference]: Start difference. First operand 145147 states and 1010567 transitions. Second operand 3 states. [2020-01-16 17:51:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:51:10,074 INFO L93 Difference]: Finished difference Result 139515 states and 956551 transitions. [2020-01-16 17:51:10,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:51:10,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:51:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:51:10,665 INFO L225 Difference]: With dead ends: 139515 [2020-01-16 17:51:10,665 INFO L226 Difference]: Without dead ends: 139515 [2020-01-16 17:51:10,666 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:51:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139515 states. [2020-01-16 17:51:28,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139515 to 139515. [2020-01-16 17:51:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139515 states. [2020-01-16 17:51:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139515 states to 139515 states and 956551 transitions. [2020-01-16 17:51:29,462 INFO L78 Accepts]: Start accepts. Automaton has 139515 states and 956551 transitions. Word has length 34 [2020-01-16 17:51:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:51:29,463 INFO L478 AbstractCegarLoop]: Abstraction has 139515 states and 956551 transitions. [2020-01-16 17:51:29,463 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:51:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 139515 states and 956551 transitions. [2020-01-16 17:51:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:51:38,009 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:51:38,009 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:51:38,010 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:51:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:51:38,010 INFO L82 PathProgramCache]: Analyzing trace with hash -457460980, now seen corresponding path program 1 times [2020-01-16 17:51:38,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:51:38,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557960034] [2020-01-16 17:51:38,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:51:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:51:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:51:38,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557960034] [2020-01-16 17:51:38,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:51:38,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:51:38,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483549597] [2020-01-16 17:51:38,054 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:51:38,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:51:38,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:51:38,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:51:38,055 INFO L87 Difference]: Start difference. First operand 139515 states and 956551 transitions. Second operand 3 states. [2020-01-16 17:51:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:51:38,708 INFO L93 Difference]: Finished difference Result 88603 states and 587879 transitions. [2020-01-16 17:51:38,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:51:38,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:51:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:51:39,034 INFO L225 Difference]: With dead ends: 88603 [2020-01-16 17:51:39,035 INFO L226 Difference]: Without dead ends: 88603 [2020-01-16 17:51:39,035 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:51:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88603 states. [2020-01-16 17:51:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88603 to 88603. [2020-01-16 17:51:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88603 states. [2020-01-16 17:51:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88603 states to 88603 states and 587879 transitions. [2020-01-16 17:51:45,648 INFO L78 Accepts]: Start accepts. Automaton has 88603 states and 587879 transitions. Word has length 34 [2020-01-16 17:51:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:51:45,649 INFO L478 AbstractCegarLoop]: Abstraction has 88603 states and 587879 transitions. [2020-01-16 17:51:45,649 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:51:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 88603 states and 587879 transitions. [2020-01-16 17:51:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:51:45,883 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:51:45,883 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:51:45,884 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:51:45,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:51:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2006703282, now seen corresponding path program 1 times [2020-01-16 17:51:45,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:51:45,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23174900] [2020-01-16 17:51:45,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:51:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:51:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:51:45,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23174900] [2020-01-16 17:51:45,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:51:45,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:51:45,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661155846] [2020-01-16 17:51:45,928 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:51:45,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:51:45,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:51:45,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:51:45,929 INFO L87 Difference]: Start difference. First operand 88603 states and 587879 transitions. Second operand 3 states. [2020-01-16 17:51:52,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:51:52,009 INFO L93 Difference]: Finished difference Result 76827 states and 490855 transitions. [2020-01-16 17:51:52,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:51:52,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:51:52,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:51:52,306 INFO L225 Difference]: With dead ends: 76827 [2020-01-16 17:51:52,306 INFO L226 Difference]: Without dead ends: 76827 [2020-01-16 17:51:52,306 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:51:54,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76827 states. [2020-01-16 17:51:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76827 to 76827. [2020-01-16 17:51:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76827 states. [2020-01-16 17:51:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76827 states to 76827 states and 490855 transitions. [2020-01-16 17:51:57,277 INFO L78 Accepts]: Start accepts. Automaton has 76827 states and 490855 transitions. Word has length 34 [2020-01-16 17:51:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:51:57,277 INFO L478 AbstractCegarLoop]: Abstraction has 76827 states and 490855 transitions. [2020-01-16 17:51:57,277 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:51:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 76827 states and 490855 transitions. [2020-01-16 17:51:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:51:57,462 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:51:57,462 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:51:57,462 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:51:57,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:51:57,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1312454640, now seen corresponding path program 1 times [2020-01-16 17:51:57,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:51:57,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766597621] [2020-01-16 17:51:57,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:51:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:51:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:51:57,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766597621] [2020-01-16 17:51:57,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:51:57,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:51:57,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985053284] [2020-01-16 17:51:57,489 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:51:57,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:51:57,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:51:57,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:51:57,490 INFO L87 Difference]: Start difference. First operand 76827 states and 490855 transitions. Second operand 3 states. [2020-01-16 17:51:57,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:51:57,804 INFO L93 Difference]: Finished difference Result 46747 states and 286439 transitions. [2020-01-16 17:51:57,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:51:57,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:51:57,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:51:57,959 INFO L225 Difference]: With dead ends: 46747 [2020-01-16 17:51:57,959 INFO L226 Difference]: Without dead ends: 46747 [2020-01-16 17:51:57,960 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:52:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46747 states. [2020-01-16 17:52:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46747 to 46747. [2020-01-16 17:52:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46747 states. [2020-01-16 17:52:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46747 states to 46747 states and 286439 transitions. [2020-01-16 17:52:02,036 INFO L78 Accepts]: Start accepts. Automaton has 46747 states and 286439 transitions. Word has length 34 [2020-01-16 17:52:02,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:02,036 INFO L478 AbstractCegarLoop]: Abstraction has 46747 states and 286439 transitions. [2020-01-16 17:52:02,037 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:52:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand 46747 states and 286439 transitions. [2020-01-16 17:52:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:02,158 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:02,158 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:02,159 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:02,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:02,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1656741828, now seen corresponding path program 1 times [2020-01-16 17:52:02,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:02,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739797865] [2020-01-16 17:52:02,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:02,197 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739797865] [2020-01-16 17:52:02,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:02,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:52:02,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641764008] [2020-01-16 17:52:02,198 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:52:02,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:02,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:52:02,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:52:02,199 INFO L87 Difference]: Start difference. First operand 46747 states and 286439 transitions. Second operand 3 states. [2020-01-16 17:52:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:02,398 INFO L93 Difference]: Finished difference Result 28571 states and 167207 transitions. [2020-01-16 17:52:02,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:52:02,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:52:02,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:02,484 INFO L225 Difference]: With dead ends: 28571 [2020-01-16 17:52:02,484 INFO L226 Difference]: Without dead ends: 28571 [2020-01-16 17:52:02,484 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:52:03,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28571 states. [2020-01-16 17:52:07,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28571 to 28571. [2020-01-16 17:52:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28571 states. [2020-01-16 17:52:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28571 states to 28571 states and 167207 transitions. [2020-01-16 17:52:07,719 INFO L78 Accepts]: Start accepts. Automaton has 28571 states and 167207 transitions. Word has length 34 [2020-01-16 17:52:07,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:07,719 INFO L478 AbstractCegarLoop]: Abstraction has 28571 states and 167207 transitions. [2020-01-16 17:52:07,719 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:52:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 28571 states and 167207 transitions. [2020-01-16 17:52:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:07,776 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:07,777 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:07,777 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:07,777 INFO L82 PathProgramCache]: Analyzing trace with hash 654666270, now seen corresponding path program 1 times [2020-01-16 17:52:07,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:07,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37448398] [2020-01-16 17:52:07,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:07,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37448398] [2020-01-16 17:52:07,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:07,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:52:07,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972277069] [2020-01-16 17:52:07,825 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:52:07,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:07,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:52:07,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:52:07,826 INFO L87 Difference]: Start difference. First operand 28571 states and 167207 transitions. Second operand 3 states. [2020-01-16 17:52:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:07,953 INFO L93 Difference]: Finished difference Result 18139 states and 100871 transitions. [2020-01-16 17:52:07,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:52:07,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:52:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:08,003 INFO L225 Difference]: With dead ends: 18139 [2020-01-16 17:52:08,003 INFO L226 Difference]: Without dead ends: 18139 [2020-01-16 17:52:08,004 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:52:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18139 states. [2020-01-16 17:52:09,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18139 to 18139. [2020-01-16 17:52:09,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18139 states. [2020-01-16 17:52:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18139 states to 18139 states and 100871 transitions. [2020-01-16 17:52:09,087 INFO L78 Accepts]: Start accepts. Automaton has 18139 states and 100871 transitions. Word has length 34 [2020-01-16 17:52:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:09,088 INFO L478 AbstractCegarLoop]: Abstraction has 18139 states and 100871 transitions. [2020-01-16 17:52:09,088 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:52:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 18139 states and 100871 transitions. [2020-01-16 17:52:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:09,122 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:09,122 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:09,122 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:09,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:09,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1250911260, now seen corresponding path program 1 times [2020-01-16 17:52:09,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:09,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020483929] [2020-01-16 17:52:09,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:09,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020483929] [2020-01-16 17:52:09,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:09,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:52:09,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998845037] [2020-01-16 17:52:09,149 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:52:09,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:09,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:52:09,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:52:09,150 INFO L87 Difference]: Start difference. First operand 18139 states and 100871 transitions. Second operand 3 states. [2020-01-16 17:52:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:09,594 INFO L93 Difference]: Finished difference Result 10215 states and 56299 transitions. [2020-01-16 17:52:09,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:52:09,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:52:09,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:09,623 INFO L225 Difference]: With dead ends: 10215 [2020-01-16 17:52:09,623 INFO L226 Difference]: Without dead ends: 10215 [2020-01-16 17:52:09,624 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:52:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10215 states. [2020-01-16 17:52:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10215 to 10215. [2020-01-16 17:52:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10215 states. [2020-01-16 17:52:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10215 states to 10215 states and 56299 transitions. [2020-01-16 17:52:10,372 INFO L78 Accepts]: Start accepts. Automaton has 10215 states and 56299 transitions. Word has length 34 [2020-01-16 17:52:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:10,373 INFO L478 AbstractCegarLoop]: Abstraction has 10215 states and 56299 transitions. [2020-01-16 17:52:10,373 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:52:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 10215 states and 56299 transitions. [2020-01-16 17:52:10,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:10,393 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:10,394 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:10,394 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:10,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:10,394 INFO L82 PathProgramCache]: Analyzing trace with hash -953380640, now seen corresponding path program 1 times [2020-01-16 17:52:10,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:10,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415642757] [2020-01-16 17:52:10,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:10,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415642757] [2020-01-16 17:52:10,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:10,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 17:52:10,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654054172] [2020-01-16 17:52:10,428 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 17:52:10,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:10,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 17:52:10,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:52:10,428 INFO L87 Difference]: Start difference. First operand 10215 states and 56299 transitions. Second operand 3 states. [2020-01-16 17:52:10,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:10,478 INFO L93 Difference]: Finished difference Result 6143 states and 33793 transitions. [2020-01-16 17:52:10,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 17:52:10,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-01-16 17:52:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:10,497 INFO L225 Difference]: With dead ends: 6143 [2020-01-16 17:52:10,497 INFO L226 Difference]: Without dead ends: 6143 [2020-01-16 17:52:10,498 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 17:52:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6143 states. [2020-01-16 17:52:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6143 to 6143. [2020-01-16 17:52:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6143 states. [2020-01-16 17:52:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 33793 transitions. [2020-01-16 17:52:11,037 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 33793 transitions. Word has length 34 [2020-01-16 17:52:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:11,037 INFO L478 AbstractCegarLoop]: Abstraction has 6143 states and 33793 transitions. [2020-01-16 17:52:11,037 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 17:52:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 33793 transitions. [2020-01-16 17:52:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:11,052 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:11,052 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:11,052 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:11,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1707014504, now seen corresponding path program 1 times [2020-01-16 17:52:11,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:11,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057174427] [2020-01-16 17:52:11,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:11,769 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 28 [2020-01-16 17:52:11,939 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:52:12,133 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:52:12,292 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:52:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:12,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057174427] [2020-01-16 17:52:12,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:12,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:12,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624488811] [2020-01-16 17:52:12,309 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:12,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:12,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:12,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:12,310 INFO L87 Difference]: Start difference. First operand 6143 states and 33793 transitions. Second operand 13 states. [2020-01-16 17:52:12,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:12,651 INFO L93 Difference]: Finished difference Result 11891 states and 58611 transitions. [2020-01-16 17:52:12,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:12,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:12,681 INFO L225 Difference]: With dead ends: 11891 [2020-01-16 17:52:12,681 INFO L226 Difference]: Without dead ends: 11867 [2020-01-16 17:52:12,682 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:13,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2020-01-16 17:52:13,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 6225. [2020-01-16 17:52:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6225 states. [2020-01-16 17:52:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 34181 transitions. [2020-01-16 17:52:13,587 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 34181 transitions. Word has length 34 [2020-01-16 17:52:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:13,587 INFO L478 AbstractCegarLoop]: Abstraction has 6225 states and 34181 transitions. [2020-01-16 17:52:13,587 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 34181 transitions. [2020-01-16 17:52:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:13,602 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:13,602 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:13,603 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:13,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1070547650, now seen corresponding path program 2 times [2020-01-16 17:52:13,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:13,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259579535] [2020-01-16 17:52:13,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:14,300 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:52:14,448 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:52:14,612 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:52:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:14,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259579535] [2020-01-16 17:52:14,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:14,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:14,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330366295] [2020-01-16 17:52:14,627 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:14,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:14,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:14,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:14,628 INFO L87 Difference]: Start difference. First operand 6225 states and 34181 transitions. Second operand 13 states. [2020-01-16 17:52:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:15,046 INFO L93 Difference]: Finished difference Result 11889 states and 58597 transitions. [2020-01-16 17:52:15,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:15,046 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:15,094 INFO L225 Difference]: With dead ends: 11889 [2020-01-16 17:52:15,094 INFO L226 Difference]: Without dead ends: 11855 [2020-01-16 17:52:15,095 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:15,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11855 states. [2020-01-16 17:52:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11855 to 6213. [2020-01-16 17:52:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:52:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34151 transitions. [2020-01-16 17:52:15,777 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34151 transitions. Word has length 34 [2020-01-16 17:52:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:15,777 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34151 transitions. [2020-01-16 17:52:15,777 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34151 transitions. [2020-01-16 17:52:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:15,794 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:15,794 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:15,794 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:15,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:15,794 INFO L82 PathProgramCache]: Analyzing trace with hash -824698088, now seen corresponding path program 3 times [2020-01-16 17:52:15,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:15,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859664161] [2020-01-16 17:52:15,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:16,406 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:52:16,583 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-01-16 17:52:16,746 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:52:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:16,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859664161] [2020-01-16 17:52:16,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:16,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:16,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891661854] [2020-01-16 17:52:16,761 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:16,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:16,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:16,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:16,762 INFO L87 Difference]: Start difference. First operand 6213 states and 34151 transitions. Second operand 13 states. [2020-01-16 17:52:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:17,360 INFO L93 Difference]: Finished difference Result 11879 states and 58577 transitions. [2020-01-16 17:52:17,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:17,361 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:17,399 INFO L225 Difference]: With dead ends: 11879 [2020-01-16 17:52:17,400 INFO L226 Difference]: Without dead ends: 11860 [2020-01-16 17:52:17,400 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11860 states. [2020-01-16 17:52:18,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11860 to 6221. [2020-01-16 17:52:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:52:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34166 transitions. [2020-01-16 17:52:18,065 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34166 transitions. Word has length 34 [2020-01-16 17:52:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:18,066 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34166 transitions. [2020-01-16 17:52:18,066 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34166 transitions. [2020-01-16 17:52:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:18,077 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:18,077 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:18,077 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:18,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1809634372, now seen corresponding path program 4 times [2020-01-16 17:52:18,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:18,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768421060] [2020-01-16 17:52:18,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:18,684 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:52:18,853 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:52:19,000 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:52:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:19,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768421060] [2020-01-16 17:52:19,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:19,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:19,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146306182] [2020-01-16 17:52:19,013 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:19,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:19,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:19,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:19,014 INFO L87 Difference]: Start difference. First operand 6221 states and 34166 transitions. Second operand 13 states. [2020-01-16 17:52:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:19,350 INFO L93 Difference]: Finished difference Result 11884 states and 58579 transitions. [2020-01-16 17:52:19,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:19,350 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:19,379 INFO L225 Difference]: With dead ends: 11884 [2020-01-16 17:52:19,379 INFO L226 Difference]: Without dead ends: 11852 [2020-01-16 17:52:19,380 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:19,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2020-01-16 17:52:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 6213. [2020-01-16 17:52:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:52:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34143 transitions. [2020-01-16 17:52:20,020 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34143 transitions. Word has length 34 [2020-01-16 17:52:20,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:20,020 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34143 transitions. [2020-01-16 17:52:20,020 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:20,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34143 transitions. [2020-01-16 17:52:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:20,031 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:20,031 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:20,031 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:20,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:20,032 INFO L82 PathProgramCache]: Analyzing trace with hash 919665918, now seen corresponding path program 5 times [2020-01-16 17:52:20,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:20,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815990820] [2020-01-16 17:52:20,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:20,780 WARN L192 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 28 [2020-01-16 17:52:20,910 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 17:52:21,067 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:52:21,225 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:52:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:21,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815990820] [2020-01-16 17:52:21,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:21,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:21,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885679088] [2020-01-16 17:52:21,237 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:21,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:21,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:21,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:21,238 INFO L87 Difference]: Start difference. First operand 6213 states and 34143 transitions. Second operand 13 states. [2020-01-16 17:52:21,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:21,652 INFO L93 Difference]: Finished difference Result 11876 states and 58564 transitions. [2020-01-16 17:52:21,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:21,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:21,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:21,681 INFO L225 Difference]: With dead ends: 11876 [2020-01-16 17:52:21,681 INFO L226 Difference]: Without dead ends: 11857 [2020-01-16 17:52:21,681 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11857 states. [2020-01-16 17:52:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11857 to 6220. [2020-01-16 17:52:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:52:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34156 transitions. [2020-01-16 17:52:22,317 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34156 transitions. Word has length 34 [2020-01-16 17:52:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:22,317 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34156 transitions. [2020-01-16 17:52:22,317 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34156 transitions. [2020-01-16 17:52:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:22,328 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:22,328 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:22,329 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:22,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:22,329 INFO L82 PathProgramCache]: Analyzing trace with hash 711203164, now seen corresponding path program 6 times [2020-01-16 17:52:22,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:22,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540442579] [2020-01-16 17:52:22,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:22,953 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 17:52:23,101 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:52:23,249 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:52:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:23,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540442579] [2020-01-16 17:52:23,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:23,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:23,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22865397] [2020-01-16 17:52:23,263 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:23,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:23,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:23,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:23,264 INFO L87 Difference]: Start difference. First operand 6220 states and 34156 transitions. Second operand 13 states. [2020-01-16 17:52:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:23,677 INFO L93 Difference]: Finished difference Result 11879 states and 58563 transitions. [2020-01-16 17:52:23,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:23,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:23,706 INFO L225 Difference]: With dead ends: 11879 [2020-01-16 17:52:23,707 INFO L226 Difference]: Without dead ends: 11841 [2020-01-16 17:52:23,707 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11841 states. [2020-01-16 17:52:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11841 to 6204. [2020-01-16 17:52:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6204 states. [2020-01-16 17:52:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 34119 transitions. [2020-01-16 17:52:24,389 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 34119 transitions. Word has length 34 [2020-01-16 17:52:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:24,389 INFO L478 AbstractCegarLoop]: Abstraction has 6204 states and 34119 transitions. [2020-01-16 17:52:24,389 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 34119 transitions. [2020-01-16 17:52:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:24,402 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:24,402 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:24,402 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:24,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:24,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2028412534, now seen corresponding path program 7 times [2020-01-16 17:52:24,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:24,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919213861] [2020-01-16 17:52:24,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:25,114 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 17:52:25,251 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:52:25,406 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:52:25,557 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:52:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:25,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919213861] [2020-01-16 17:52:25,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:25,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:25,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389561135] [2020-01-16 17:52:25,572 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:25,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:25,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:25,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:25,573 INFO L87 Difference]: Start difference. First operand 6204 states and 34119 transitions. Second operand 13 states. [2020-01-16 17:52:25,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:25,830 INFO L93 Difference]: Finished difference Result 11900 states and 58627 transitions. [2020-01-16 17:52:25,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:25,831 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:25,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:25,859 INFO L225 Difference]: With dead ends: 11900 [2020-01-16 17:52:25,860 INFO L226 Difference]: Without dead ends: 11876 [2020-01-16 17:52:25,860 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11876 states. [2020-01-16 17:52:26,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11876 to 6228. [2020-01-16 17:52:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2020-01-16 17:52:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 34181 transitions. [2020-01-16 17:52:26,496 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 34181 transitions. Word has length 34 [2020-01-16 17:52:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:26,496 INFO L478 AbstractCegarLoop]: Abstraction has 6228 states and 34181 transitions. [2020-01-16 17:52:26,496 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 34181 transitions. [2020-01-16 17:52:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:26,508 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:26,508 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:26,508 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:26,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1391945680, now seen corresponding path program 8 times [2020-01-16 17:52:26,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:26,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479122146] [2020-01-16 17:52:26,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:27,299 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:52:27,454 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:52:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:27,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479122146] [2020-01-16 17:52:27,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:27,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:27,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526096793] [2020-01-16 17:52:27,467 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:27,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:27,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:27,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:27,468 INFO L87 Difference]: Start difference. First operand 6228 states and 34181 transitions. Second operand 13 states. [2020-01-16 17:52:27,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:27,808 INFO L93 Difference]: Finished difference Result 11898 states and 58613 transitions. [2020-01-16 17:52:27,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:27,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:27,842 INFO L225 Difference]: With dead ends: 11898 [2020-01-16 17:52:27,842 INFO L226 Difference]: Without dead ends: 11864 [2020-01-16 17:52:27,842 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:28,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11864 states. [2020-01-16 17:52:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11864 to 6216. [2020-01-16 17:52:28,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:52:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34149 transitions. [2020-01-16 17:52:28,744 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34149 transitions. Word has length 34 [2020-01-16 17:52:28,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:28,745 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34149 transitions. [2020-01-16 17:52:28,745 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34149 transitions. [2020-01-16 17:52:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:28,756 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:28,756 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:28,756 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:28,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:28,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1338535332, now seen corresponding path program 9 times [2020-01-16 17:52:28,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:28,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040765898] [2020-01-16 17:52:28,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:29,374 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:52:29,532 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:52:29,687 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:52:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:29,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040765898] [2020-01-16 17:52:29,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:29,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:29,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768948892] [2020-01-16 17:52:29,700 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:29,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:29,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:29,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:29,701 INFO L87 Difference]: Start difference. First operand 6216 states and 34149 transitions. Second operand 13 states. [2020-01-16 17:52:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:29,985 INFO L93 Difference]: Finished difference Result 11897 states and 58610 transitions. [2020-01-16 17:52:29,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:29,986 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:30,015 INFO L225 Difference]: With dead ends: 11897 [2020-01-16 17:52:30,015 INFO L226 Difference]: Without dead ends: 11873 [2020-01-16 17:52:30,015 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:30,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11873 states. [2020-01-16 17:52:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11873 to 6226. [2020-01-16 17:52:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6226 states. [2020-01-16 17:52:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 34167 transitions. [2020-01-16 17:52:30,650 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 34167 transitions. Word has length 34 [2020-01-16 17:52:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:30,650 INFO L478 AbstractCegarLoop]: Abstraction has 6226 states and 34167 transitions. [2020-01-16 17:52:30,650 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 34167 transitions. [2020-01-16 17:52:30,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:30,660 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:30,661 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:30,661 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:30,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:30,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1259187020, now seen corresponding path program 10 times [2020-01-16 17:52:30,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:30,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983194234] [2020-01-16 17:52:30,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:31,256 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:52:31,404 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:52:31,554 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:52:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:31,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983194234] [2020-01-16 17:52:31,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:31,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:31,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148417404] [2020-01-16 17:52:31,567 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:31,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:31,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:31,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:31,568 INFO L87 Difference]: Start difference. First operand 6226 states and 34167 transitions. Second operand 13 states. [2020-01-16 17:52:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:31,881 INFO L93 Difference]: Finished difference Result 11894 states and 58595 transitions. [2020-01-16 17:52:31,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:31,881 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:31,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:31,911 INFO L225 Difference]: With dead ends: 11894 [2020-01-16 17:52:31,911 INFO L226 Difference]: Without dead ends: 11863 [2020-01-16 17:52:31,912 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:32,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11863 states. [2020-01-16 17:52:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11863 to 6216. [2020-01-16 17:52:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:52:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34139 transitions. [2020-01-16 17:52:32,822 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34139 transitions. Word has length 34 [2020-01-16 17:52:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:32,823 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34139 transitions. [2020-01-16 17:52:32,823 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34139 transitions. [2020-01-16 17:52:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:32,834 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:32,835 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:32,835 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:32,835 INFO L82 PathProgramCache]: Analyzing trace with hash -230638180, now seen corresponding path program 11 times [2020-01-16 17:52:32,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:32,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107247367] [2020-01-16 17:52:32,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:33,477 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:52:33,659 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:52:33,814 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:52:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:33,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107247367] [2020-01-16 17:52:33,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:33,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:33,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572390533] [2020-01-16 17:52:33,826 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:33,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:33,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:33,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:33,827 INFO L87 Difference]: Start difference. First operand 6216 states and 34139 transitions. Second operand 13 states. [2020-01-16 17:52:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:34,134 INFO L93 Difference]: Finished difference Result 11892 states and 58592 transitions. [2020-01-16 17:52:34,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:34,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:34,164 INFO L225 Difference]: With dead ends: 11892 [2020-01-16 17:52:34,164 INFO L226 Difference]: Without dead ends: 11870 [2020-01-16 17:52:34,164 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11870 states. [2020-01-16 17:52:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11870 to 6225. [2020-01-16 17:52:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6225 states. [2020-01-16 17:52:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 34156 transitions. [2020-01-16 17:52:34,799 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 34156 transitions. Word has length 34 [2020-01-16 17:52:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:34,799 INFO L478 AbstractCegarLoop]: Abstraction has 6225 states and 34156 transitions. [2020-01-16 17:52:34,799 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 34156 transitions. [2020-01-16 17:52:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:34,810 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:34,810 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:34,810 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:34,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:34,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1291416270, now seen corresponding path program 12 times [2020-01-16 17:52:34,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:34,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129388869] [2020-01-16 17:52:34,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:35,397 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:52:35,551 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:52:35,700 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:52:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:35,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129388869] [2020-01-16 17:52:35,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:35,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:35,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471616709] [2020-01-16 17:52:35,713 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:35,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:35,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:35,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:35,714 INFO L87 Difference]: Start difference. First operand 6225 states and 34156 transitions. Second operand 13 states. [2020-01-16 17:52:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:36,147 INFO L93 Difference]: Finished difference Result 11891 states and 58581 transitions. [2020-01-16 17:52:36,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:36,149 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:36,180 INFO L225 Difference]: With dead ends: 11891 [2020-01-16 17:52:36,180 INFO L226 Difference]: Without dead ends: 11849 [2020-01-16 17:52:36,180 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11849 states. [2020-01-16 17:52:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11849 to 6204. [2020-01-16 17:52:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6204 states. [2020-01-16 17:52:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 34109 transitions. [2020-01-16 17:52:37,082 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 34109 transitions. Word has length 34 [2020-01-16 17:52:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:37,083 INFO L478 AbstractCegarLoop]: Abstraction has 6204 states and 34109 transitions. [2020-01-16 17:52:37,083 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 34109 transitions. [2020-01-16 17:52:37,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:37,096 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:37,096 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:37,096 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:37,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2120866830, now seen corresponding path program 13 times [2020-01-16 17:52:37,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:37,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627383385] [2020-01-16 17:52:37,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:37,695 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:52:37,845 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:52:37,994 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:52:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:38,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627383385] [2020-01-16 17:52:38,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:38,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:38,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778077270] [2020-01-16 17:52:38,007 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:38,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:38,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:38,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:38,007 INFO L87 Difference]: Start difference. First operand 6204 states and 34109 transitions. Second operand 13 states. [2020-01-16 17:52:38,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:38,313 INFO L93 Difference]: Finished difference Result 11875 states and 58559 transitions. [2020-01-16 17:52:38,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:38,314 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:38,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:38,343 INFO L225 Difference]: With dead ends: 11875 [2020-01-16 17:52:38,343 INFO L226 Difference]: Without dead ends: 11856 [2020-01-16 17:52:38,344 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:38,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2020-01-16 17:52:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 6220. [2020-01-16 17:52:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:52:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34154 transitions. [2020-01-16 17:52:38,978 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34154 transitions. Word has length 34 [2020-01-16 17:52:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:38,978 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34154 transitions. [2020-01-16 17:52:38,978 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34154 transitions. [2020-01-16 17:52:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:38,989 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:38,990 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:38,990 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:38,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:38,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1189164182, now seen corresponding path program 14 times [2020-01-16 17:52:38,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:38,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525312516] [2020-01-16 17:52:38,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:39,584 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:52:39,737 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:52:39,884 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:52:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:39,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525312516] [2020-01-16 17:52:39,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:39,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:39,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984263814] [2020-01-16 17:52:39,896 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:39,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:39,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:39,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:39,897 INFO L87 Difference]: Start difference. First operand 6220 states and 34154 transitions. Second operand 13 states. [2020-01-16 17:52:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:40,189 INFO L93 Difference]: Finished difference Result 11880 states and 58561 transitions. [2020-01-16 17:52:40,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:40,189 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:40,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:40,218 INFO L225 Difference]: With dead ends: 11880 [2020-01-16 17:52:40,219 INFO L226 Difference]: Without dead ends: 11848 [2020-01-16 17:52:40,219 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:40,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2020-01-16 17:52:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 6212. [2020-01-16 17:52:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:52:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34131 transitions. [2020-01-16 17:52:40,875 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34131 transitions. Word has length 34 [2020-01-16 17:52:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:40,875 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34131 transitions. [2020-01-16 17:52:40,875 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:40,875 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34131 transitions. [2020-01-16 17:52:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:40,886 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:40,886 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:40,886 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:40,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:40,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1099114754, now seen corresponding path program 15 times [2020-01-16 17:52:40,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:40,887 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305284582] [2020-01-16 17:52:40,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:41,290 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 17 [2020-01-16 17:52:41,878 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:52:42,027 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:52:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:42,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305284582] [2020-01-16 17:52:42,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:42,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:42,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272258926] [2020-01-16 17:52:42,039 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:42,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:42,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:42,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:42,040 INFO L87 Difference]: Start difference. First operand 6212 states and 34131 transitions. Second operand 13 states. [2020-01-16 17:52:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:42,407 INFO L93 Difference]: Finished difference Result 11871 states and 58544 transitions. [2020-01-16 17:52:42,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:42,408 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:42,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:42,436 INFO L225 Difference]: With dead ends: 11871 [2020-01-16 17:52:42,436 INFO L226 Difference]: Without dead ends: 11852 [2020-01-16 17:52:42,437 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2020-01-16 17:52:43,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 6219. [2020-01-16 17:52:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:52:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34144 transitions. [2020-01-16 17:52:43,075 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34144 transitions. Word has length 34 [2020-01-16 17:52:43,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:43,075 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34144 transitions. [2020-01-16 17:52:43,075 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:43,075 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34144 transitions. [2020-01-16 17:52:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:43,086 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:43,086 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:43,086 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:43,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1779692234, now seen corresponding path program 16 times [2020-01-16 17:52:43,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:43,087 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380116609] [2020-01-16 17:52:43,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:43,819 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:52:43,970 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:52:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:43,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380116609] [2020-01-16 17:52:43,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:43,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:43,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461067562] [2020-01-16 17:52:43,982 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:43,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:43,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:43,983 INFO L87 Difference]: Start difference. First operand 6219 states and 34144 transitions. Second operand 13 states. [2020-01-16 17:52:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:44,357 INFO L93 Difference]: Finished difference Result 11873 states and 58541 transitions. [2020-01-16 17:52:44,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:44,358 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:44,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:44,386 INFO L225 Difference]: With dead ends: 11873 [2020-01-16 17:52:44,386 INFO L226 Difference]: Without dead ends: 11845 [2020-01-16 17:52:44,387 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:44,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11845 states. [2020-01-16 17:52:45,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11845 to 6212. [2020-01-16 17:52:45,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:52:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34124 transitions. [2020-01-16 17:52:45,021 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34124 transitions. Word has length 34 [2020-01-16 17:52:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:45,022 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34124 transitions. [2020-01-16 17:52:45,022 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34124 transitions. [2020-01-16 17:52:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:45,033 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:45,033 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:45,033 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2140460770, now seen corresponding path program 17 times [2020-01-16 17:52:45,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:45,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512077420] [2020-01-16 17:52:45,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:45,617 WARN L192 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-01-16 17:52:45,841 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:52:45,998 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:52:46,148 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:52:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:46,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512077420] [2020-01-16 17:52:46,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:46,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:46,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974101073] [2020-01-16 17:52:46,161 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:46,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:46,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:46,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:46,161 INFO L87 Difference]: Start difference. First operand 6212 states and 34124 transitions. Second operand 13 states. [2020-01-16 17:52:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:46,497 INFO L93 Difference]: Finished difference Result 11884 states and 58563 transitions. [2020-01-16 17:52:46,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:46,498 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:46,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:46,526 INFO L225 Difference]: With dead ends: 11884 [2020-01-16 17:52:46,526 INFO L226 Difference]: Without dead ends: 11860 [2020-01-16 17:52:46,526 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11860 states. [2020-01-16 17:52:47,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11860 to 6222. [2020-01-16 17:52:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-01-16 17:52:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 34142 transitions. [2020-01-16 17:52:47,158 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 34142 transitions. Word has length 34 [2020-01-16 17:52:47,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:47,159 INFO L478 AbstractCegarLoop]: Abstraction has 6222 states and 34142 transitions. [2020-01-16 17:52:47,159 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:47,159 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 34142 transitions. [2020-01-16 17:52:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:47,169 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:47,169 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:47,170 INFO L426 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:47,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:47,170 INFO L82 PathProgramCache]: Analyzing trace with hash 887244786, now seen corresponding path program 18 times [2020-01-16 17:52:47,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:47,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081340538] [2020-01-16 17:52:47,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:47,750 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:52:47,898 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:52:48,046 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:52:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:48,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081340538] [2020-01-16 17:52:48,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:48,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:48,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25871317] [2020-01-16 17:52:48,057 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:48,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:48,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:48,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:48,058 INFO L87 Difference]: Start difference. First operand 6222 states and 34142 transitions. Second operand 13 states. [2020-01-16 17:52:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:48,399 INFO L93 Difference]: Finished difference Result 11881 states and 58548 transitions. [2020-01-16 17:52:48,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:48,400 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:48,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:48,429 INFO L225 Difference]: With dead ends: 11881 [2020-01-16 17:52:48,429 INFO L226 Difference]: Without dead ends: 11842 [2020-01-16 17:52:48,430 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:48,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2020-01-16 17:52:49,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 6204. [2020-01-16 17:52:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6204 states. [2020-01-16 17:52:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 34101 transitions. [2020-01-16 17:52:49,072 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 34101 transitions. Word has length 34 [2020-01-16 17:52:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:49,072 INFO L478 AbstractCegarLoop]: Abstraction has 6204 states and 34101 transitions. [2020-01-16 17:52:49,072 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 34101 transitions. [2020-01-16 17:52:49,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:49,084 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:49,084 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:49,084 INFO L426 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:49,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:49,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2135793486, now seen corresponding path program 19 times [2020-01-16 17:52:49,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:49,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285569653] [2020-01-16 17:52:49,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:49,631 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-01-16 17:52:49,786 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 17:52:49,926 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:52:50,306 WARN L192 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:52:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:50,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285569653] [2020-01-16 17:52:50,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:50,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:50,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905459425] [2020-01-16 17:52:50,317 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:50,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:50,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:50,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:50,318 INFO L87 Difference]: Start difference. First operand 6204 states and 34101 transitions. Second operand 13 states. [2020-01-16 17:52:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:50,644 INFO L93 Difference]: Finished difference Result 11867 states and 58536 transitions. [2020-01-16 17:52:50,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:50,645 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:50,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:50,674 INFO L225 Difference]: With dead ends: 11867 [2020-01-16 17:52:50,675 INFO L226 Difference]: Without dead ends: 11848 [2020-01-16 17:52:50,675 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:51,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2020-01-16 17:52:51,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 6218. [2020-01-16 17:52:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:52:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34141 transitions. [2020-01-16 17:52:51,311 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34141 transitions. Word has length 34 [2020-01-16 17:52:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:51,311 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34141 transitions. [2020-01-16 17:52:51,311 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34141 transitions. [2020-01-16 17:52:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:51,322 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:51,322 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:51,322 INFO L426 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1950711056, now seen corresponding path program 20 times [2020-01-16 17:52:51,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:51,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673437173] [2020-01-16 17:52:51,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:52,055 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:52:52,206 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:52:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:52,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673437173] [2020-01-16 17:52:52,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:52,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:52,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891370070] [2020-01-16 17:52:52,218 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:52,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:52,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:52,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:52,218 INFO L87 Difference]: Start difference. First operand 6218 states and 34141 transitions. Second operand 13 states. [2020-01-16 17:52:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:52,560 INFO L93 Difference]: Finished difference Result 11870 states and 58535 transitions. [2020-01-16 17:52:52,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:52,560 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:52,590 INFO L225 Difference]: With dead ends: 11870 [2020-01-16 17:52:52,590 INFO L226 Difference]: Without dead ends: 11841 [2020-01-16 17:52:52,590 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:53,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11841 states. [2020-01-16 17:52:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11841 to 6211. [2020-01-16 17:52:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:52:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34121 transitions. [2020-01-16 17:52:53,233 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34121 transitions. Word has length 34 [2020-01-16 17:52:53,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:53,234 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34121 transitions. [2020-01-16 17:52:53,234 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34121 transitions. [2020-01-16 17:52:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:53,245 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:53,245 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:53,245 INFO L426 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:53,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:53,245 INFO L82 PathProgramCache]: Analyzing trace with hash -660175908, now seen corresponding path program 21 times [2020-01-16 17:52:53,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:53,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853048845] [2020-01-16 17:52:53,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:53,963 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:52:54,115 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:52:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:54,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853048845] [2020-01-16 17:52:54,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:54,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:54,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729446982] [2020-01-16 17:52:54,128 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:54,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:54,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:54,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:54,128 INFO L87 Difference]: Start difference. First operand 6211 states and 34121 transitions. Second operand 13 states. [2020-01-16 17:52:54,669 WARN L192 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-01-16 17:52:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:54,692 INFO L93 Difference]: Finished difference Result 11866 states and 58527 transitions. [2020-01-16 17:52:54,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:54,693 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:54,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:54,725 INFO L225 Difference]: With dead ends: 11866 [2020-01-16 17:52:54,725 INFO L226 Difference]: Without dead ends: 11847 [2020-01-16 17:52:54,725 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11847 states. [2020-01-16 17:52:55,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11847 to 6218. [2020-01-16 17:52:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:52:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34134 transitions. [2020-01-16 17:52:55,359 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34134 transitions. Word has length 34 [2020-01-16 17:52:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:55,359 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34134 transitions. [2020-01-16 17:52:55,359 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34134 transitions. [2020-01-16 17:52:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:55,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:55,370 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:55,371 INFO L426 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:55,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:55,371 INFO L82 PathProgramCache]: Analyzing trace with hash 755984400, now seen corresponding path program 22 times [2020-01-16 17:52:55,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:55,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210979539] [2020-01-16 17:52:55,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:56,088 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:52:56,236 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:52:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:56,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210979539] [2020-01-16 17:52:56,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:56,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:56,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391091240] [2020-01-16 17:52:56,248 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:56,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:56,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:56,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:56,249 INFO L87 Difference]: Start difference. First operand 6218 states and 34134 transitions. Second operand 13 states. [2020-01-16 17:52:56,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:56,685 INFO L93 Difference]: Finished difference Result 11868 states and 58524 transitions. [2020-01-16 17:52:56,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:56,686 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:56,716 INFO L225 Difference]: With dead ends: 11868 [2020-01-16 17:52:56,716 INFO L226 Difference]: Without dead ends: 11840 [2020-01-16 17:52:56,716 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11840 states. [2020-01-16 17:52:57,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11840 to 6211. [2020-01-16 17:52:57,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:52:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34114 transitions. [2020-01-16 17:52:57,349 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34114 transitions. Word has length 34 [2020-01-16 17:52:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:57,349 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34114 transitions. [2020-01-16 17:52:57,349 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34114 transitions. [2020-01-16 17:52:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:57,360 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:57,360 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:57,361 INFO L426 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:57,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:57,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1392959652, now seen corresponding path program 23 times [2020-01-16 17:52:57,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:57,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273649993] [2020-01-16 17:52:57,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:52:57,965 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:52:58,113 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:52:58,259 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:52:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:52:58,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273649993] [2020-01-16 17:52:58,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:52:58,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:52:58,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314241813] [2020-01-16 17:52:58,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:52:58,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:52:58,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:52:58,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:52:58,270 INFO L87 Difference]: Start difference. First operand 6211 states and 34114 transitions. Second operand 13 states. [2020-01-16 17:52:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:52:58,652 INFO L93 Difference]: Finished difference Result 11874 states and 58538 transitions. [2020-01-16 17:52:58,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:52:58,653 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:52:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:52:58,682 INFO L225 Difference]: With dead ends: 11874 [2020-01-16 17:52:58,682 INFO L226 Difference]: Without dead ends: 11852 [2020-01-16 17:52:58,682 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:52:59,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2020-01-16 17:52:59,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 6220. [2020-01-16 17:52:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:52:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34131 transitions. [2020-01-16 17:52:59,535 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34131 transitions. Word has length 34 [2020-01-16 17:52:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:52:59,536 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34131 transitions. [2020-01-16 17:52:59,536 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:52:59,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34131 transitions. [2020-01-16 17:52:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:52:59,548 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:52:59,548 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:52:59,548 INFO L426 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:52:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:52:59,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1411393678, now seen corresponding path program 24 times [2020-01-16 17:52:59,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:52:59,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49707108] [2020-01-16 17:52:59,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:52:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:00,084 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:53:00,225 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:53:00,375 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:53:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:00,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49707108] [2020-01-16 17:53:00,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:00,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:00,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801501799] [2020-01-16 17:53:00,387 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:00,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:00,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:00,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:00,388 INFO L87 Difference]: Start difference. First operand 6220 states and 34131 transitions. Second operand 13 states. [2020-01-16 17:53:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:00,724 INFO L93 Difference]: Finished difference Result 11873 states and 58527 transitions. [2020-01-16 17:53:00,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:00,725 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:00,755 INFO L225 Difference]: With dead ends: 11873 [2020-01-16 17:53:00,755 INFO L226 Difference]: Without dead ends: 11826 [2020-01-16 17:53:00,755 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:01,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11826 states. [2020-01-16 17:53:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11826 to 6194. [2020-01-16 17:53:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6194 states. [2020-01-16 17:53:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 34076 transitions. [2020-01-16 17:53:01,386 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 34076 transitions. Word has length 34 [2020-01-16 17:53:01,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:01,386 INFO L478 AbstractCegarLoop]: Abstraction has 6194 states and 34076 transitions. [2020-01-16 17:53:01,386 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 34076 transitions. [2020-01-16 17:53:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:01,397 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:01,397 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:01,397 INFO L426 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:01,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1529260104, now seen corresponding path program 25 times [2020-01-16 17:53:01,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:01,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608923899] [2020-01-16 17:53:01,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:01,992 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:53:02,144 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:53:02,298 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:02,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608923899] [2020-01-16 17:53:02,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:02,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:02,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450172773] [2020-01-16 17:53:02,310 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:02,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:02,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:02,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:02,311 INFO L87 Difference]: Start difference. First operand 6194 states and 34076 transitions. Second operand 13 states. [2020-01-16 17:53:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:02,652 INFO L93 Difference]: Finished difference Result 11873 states and 58547 transitions. [2020-01-16 17:53:02,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:02,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:02,682 INFO L225 Difference]: With dead ends: 11873 [2020-01-16 17:53:02,682 INFO L226 Difference]: Without dead ends: 11849 [2020-01-16 17:53:02,682 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11849 states. [2020-01-16 17:53:03,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11849 to 6223. [2020-01-16 17:53:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-01-16 17:53:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 34165 transitions. [2020-01-16 17:53:03,586 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 34165 transitions. Word has length 34 [2020-01-16 17:53:03,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:03,586 INFO L478 AbstractCegarLoop]: Abstraction has 6223 states and 34165 transitions. [2020-01-16 17:53:03,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 34165 transitions. [2020-01-16 17:53:03,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:03,597 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:03,597 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:03,597 INFO L426 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:03,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:03,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2129240338, now seen corresponding path program 26 times [2020-01-16 17:53:03,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:03,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693661227] [2020-01-16 17:53:03,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:04,312 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:53:04,475 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:04,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693661227] [2020-01-16 17:53:04,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:04,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:04,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573578723] [2020-01-16 17:53:04,487 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:04,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:04,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:04,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:04,487 INFO L87 Difference]: Start difference. First operand 6223 states and 34165 transitions. Second operand 13 states. [2020-01-16 17:53:04,973 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-01-16 17:53:05,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:05,001 INFO L93 Difference]: Finished difference Result 11871 states and 58533 transitions. [2020-01-16 17:53:05,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:05,001 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:05,030 INFO L225 Difference]: With dead ends: 11871 [2020-01-16 17:53:05,030 INFO L226 Difference]: Without dead ends: 11837 [2020-01-16 17:53:05,031 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11837 states. [2020-01-16 17:53:05,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11837 to 6211. [2020-01-16 17:53:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:53:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34135 transitions. [2020-01-16 17:53:05,667 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34135 transitions. Word has length 34 [2020-01-16 17:53:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:05,667 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34135 transitions. [2020-01-16 17:53:05,667 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34135 transitions. [2020-01-16 17:53:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:05,678 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:05,678 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:05,678 INFO L426 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:05,679 INFO L82 PathProgramCache]: Analyzing trace with hash 233994600, now seen corresponding path program 27 times [2020-01-16 17:53:05,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:05,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260154190] [2020-01-16 17:53:05,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:06,261 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:53:06,408 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-01-16 17:53:06,554 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:06,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260154190] [2020-01-16 17:53:06,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:06,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:06,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110434505] [2020-01-16 17:53:06,566 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:06,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:06,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:06,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:06,567 INFO L87 Difference]: Start difference. First operand 6211 states and 34135 transitions. Second operand 13 states. [2020-01-16 17:53:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:07,063 INFO L93 Difference]: Finished difference Result 11861 states and 58513 transitions. [2020-01-16 17:53:07,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:07,064 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:07,102 INFO L225 Difference]: With dead ends: 11861 [2020-01-16 17:53:07,103 INFO L226 Difference]: Without dead ends: 11842 [2020-01-16 17:53:07,103 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2020-01-16 17:53:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 6219. [2020-01-16 17:53:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:53:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34150 transitions. [2020-01-16 17:53:07,743 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34150 transitions. Word has length 34 [2020-01-16 17:53:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:07,744 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34150 transitions. [2020-01-16 17:53:07,744 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:07,744 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34150 transitions. [2020-01-16 17:53:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:07,755 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:07,755 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:07,755 INFO L426 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:07,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:07,755 INFO L82 PathProgramCache]: Analyzing trace with hash -750941684, now seen corresponding path program 28 times [2020-01-16 17:53:07,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:07,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385313705] [2020-01-16 17:53:07,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:08,560 WARN L192 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:53:08,710 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:53:08,857 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:08,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385313705] [2020-01-16 17:53:08,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:08,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:08,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59924247] [2020-01-16 17:53:08,869 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:08,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:08,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:08,870 INFO L87 Difference]: Start difference. First operand 6219 states and 34150 transitions. Second operand 13 states. [2020-01-16 17:53:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:09,230 INFO L93 Difference]: Finished difference Result 11866 states and 58515 transitions. [2020-01-16 17:53:09,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:09,230 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:09,259 INFO L225 Difference]: With dead ends: 11866 [2020-01-16 17:53:09,259 INFO L226 Difference]: Without dead ends: 11834 [2020-01-16 17:53:09,260 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11834 states. [2020-01-16 17:53:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11834 to 6211. [2020-01-16 17:53:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:53:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34127 transitions. [2020-01-16 17:53:09,893 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34127 transitions. Word has length 34 [2020-01-16 17:53:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:09,893 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34127 transitions. [2020-01-16 17:53:09,893 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34127 transitions. [2020-01-16 17:53:09,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:09,904 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:09,904 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:09,904 INFO L426 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:09,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1978358606, now seen corresponding path program 29 times [2020-01-16 17:53:09,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:09,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234373006] [2020-01-16 17:53:09,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:10,459 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 17:53:10,604 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:53:10,755 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:10,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234373006] [2020-01-16 17:53:10,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:10,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:10,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012121138] [2020-01-16 17:53:10,767 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:10,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:10,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:10,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:10,768 INFO L87 Difference]: Start difference. First operand 6211 states and 34127 transitions. Second operand 13 states. [2020-01-16 17:53:11,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:11,065 INFO L93 Difference]: Finished difference Result 11858 states and 58500 transitions. [2020-01-16 17:53:11,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:11,065 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:11,095 INFO L225 Difference]: With dead ends: 11858 [2020-01-16 17:53:11,095 INFO L226 Difference]: Without dead ends: 11839 [2020-01-16 17:53:11,095 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11839 states. [2020-01-16 17:53:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11839 to 6218. [2020-01-16 17:53:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:53:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34140 transitions. [2020-01-16 17:53:11,742 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34140 transitions. Word has length 34 [2020-01-16 17:53:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:11,742 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34140 transitions. [2020-01-16 17:53:11,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34140 transitions. [2020-01-16 17:53:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:11,753 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:11,753 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:11,753 INFO L426 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:11,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:11,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1769895852, now seen corresponding path program 30 times [2020-01-16 17:53:11,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:11,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181974271] [2020-01-16 17:53:11,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:12,457 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:53:12,601 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:12,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181974271] [2020-01-16 17:53:12,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:12,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:12,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497034782] [2020-01-16 17:53:12,612 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:12,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:12,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:12,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:12,613 INFO L87 Difference]: Start difference. First operand 6218 states and 34140 transitions. Second operand 13 states. [2020-01-16 17:53:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:12,901 INFO L93 Difference]: Finished difference Result 11861 states and 58499 transitions. [2020-01-16 17:53:12,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:12,902 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:13,163 INFO L225 Difference]: With dead ends: 11861 [2020-01-16 17:53:13,163 INFO L226 Difference]: Without dead ends: 11823 [2020-01-16 17:53:13,163 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11823 states. [2020-01-16 17:53:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11823 to 6202. [2020-01-16 17:53:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6202 states. [2020-01-16 17:53:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 34104 transitions. [2020-01-16 17:53:13,797 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 34104 transitions. Word has length 34 [2020-01-16 17:53:13,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:13,797 INFO L478 AbstractCegarLoop]: Abstraction has 6202 states and 34104 transitions. [2020-01-16 17:53:13,797 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 34104 transitions. [2020-01-16 17:53:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:13,809 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:13,809 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:13,809 INFO L426 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:13,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1935056908, now seen corresponding path program 31 times [2020-01-16 17:53:13,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:13,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511592520] [2020-01-16 17:53:13,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:14,384 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:53:14,535 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:53:14,688 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:14,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511592520] [2020-01-16 17:53:14,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:14,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:14,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526383205] [2020-01-16 17:53:14,700 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:14,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:14,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:14,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:14,701 INFO L87 Difference]: Start difference. First operand 6202 states and 34104 transitions. Second operand 13 states. [2020-01-16 17:53:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:14,971 INFO L93 Difference]: Finished difference Result 11869 states and 58527 transitions. [2020-01-16 17:53:14,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:14,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:15,001 INFO L225 Difference]: With dead ends: 11869 [2020-01-16 17:53:15,001 INFO L226 Difference]: Without dead ends: 11845 [2020-01-16 17:53:15,002 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11845 states. [2020-01-16 17:53:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11845 to 6222. [2020-01-16 17:53:15,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-01-16 17:53:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 34153 transitions. [2020-01-16 17:53:15,638 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 34153 transitions. Word has length 34 [2020-01-16 17:53:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:15,639 INFO L478 AbstractCegarLoop]: Abstraction has 6222 states and 34153 transitions. [2020-01-16 17:53:15,639 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 34153 transitions. [2020-01-16 17:53:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:15,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:15,650 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:15,650 INFO L426 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:15,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1723443534, now seen corresponding path program 32 times [2020-01-16 17:53:15,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:15,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202886026] [2020-01-16 17:53:15,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:16,224 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:53:16,368 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:53:16,518 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:16,530 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202886026] [2020-01-16 17:53:16,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:16,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:16,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523999660] [2020-01-16 17:53:16,530 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:16,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:16,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:16,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:16,531 INFO L87 Difference]: Start difference. First operand 6222 states and 34153 transitions. Second operand 13 states. [2020-01-16 17:53:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:16,833 INFO L93 Difference]: Finished difference Result 11867 states and 58513 transitions. [2020-01-16 17:53:16,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:16,833 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:16,863 INFO L225 Difference]: With dead ends: 11867 [2020-01-16 17:53:16,863 INFO L226 Difference]: Without dead ends: 11833 [2020-01-16 17:53:16,863 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11833 states. [2020-01-16 17:53:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11833 to 6210. [2020-01-16 17:53:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6210 states. [2020-01-16 17:53:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 34124 transitions. [2020-01-16 17:53:17,616 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 34124 transitions. Word has length 34 [2020-01-16 17:53:17,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:17,616 INFO L478 AbstractCegarLoop]: Abstraction has 6210 states and 34124 transitions. [2020-01-16 17:53:17,616 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 34124 transitions. [2020-01-16 17:53:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:17,627 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:17,627 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:17,628 INFO L426 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:17,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1134213844, now seen corresponding path program 33 times [2020-01-16 17:53:17,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:17,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792168856] [2020-01-16 17:53:17,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:18,321 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:53:18,480 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:18,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792168856] [2020-01-16 17:53:18,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:18,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:18,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251512337] [2020-01-16 17:53:18,492 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:18,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:18,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:18,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:18,493 INFO L87 Difference]: Start difference. First operand 6210 states and 34124 transitions. Second operand 13 states. [2020-01-16 17:53:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:18,753 INFO L93 Difference]: Finished difference Result 11860 states and 58498 transitions. [2020-01-16 17:53:18,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:18,754 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:18,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:18,782 INFO L225 Difference]: With dead ends: 11860 [2020-01-16 17:53:18,782 INFO L226 Difference]: Without dead ends: 11836 [2020-01-16 17:53:18,783 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11836 states. [2020-01-16 17:53:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11836 to 6217. [2020-01-16 17:53:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6217 states. [2020-01-16 17:53:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 34136 transitions. [2020-01-16 17:53:19,421 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 34136 transitions. Word has length 34 [2020-01-16 17:53:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:19,421 INFO L478 AbstractCegarLoop]: Abstraction has 6217 states and 34136 transitions. [2020-01-16 17:53:19,421 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 34136 transitions. [2020-01-16 17:53:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:19,432 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:19,433 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:19,433 INFO L426 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:19,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:19,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1346369462, now seen corresponding path program 34 times [2020-01-16 17:53:19,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:19,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480171958] [2020-01-16 17:53:19,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:20,151 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-01-16 17:53:20,300 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:20,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480171958] [2020-01-16 17:53:20,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:20,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:20,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184575941] [2020-01-16 17:53:20,312 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:20,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:20,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:20,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:20,313 INFO L87 Difference]: Start difference. First operand 6217 states and 34136 transitions. Second operand 13 states. [2020-01-16 17:53:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:20,614 INFO L93 Difference]: Finished difference Result 11854 states and 58480 transitions. [2020-01-16 17:53:20,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:20,614 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:20,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:20,643 INFO L225 Difference]: With dead ends: 11854 [2020-01-16 17:53:20,643 INFO L226 Difference]: Without dead ends: 11829 [2020-01-16 17:53:20,644 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:21,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11829 states. [2020-01-16 17:53:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11829 to 6210. [2020-01-16 17:53:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6210 states. [2020-01-16 17:53:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 34117 transitions. [2020-01-16 17:53:21,278 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 34117 transitions. Word has length 34 [2020-01-16 17:53:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:21,278 INFO L478 AbstractCegarLoop]: Abstraction has 6210 states and 34117 transitions. [2020-01-16 17:53:21,278 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 34117 transitions. [2020-01-16 17:53:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:21,289 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:21,289 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:21,289 INFO L426 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:21,289 INFO L82 PathProgramCache]: Analyzing trace with hash 397994544, now seen corresponding path program 35 times [2020-01-16 17:53:21,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:21,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245967261] [2020-01-16 17:53:21,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:21,991 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:53:22,139 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:22,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245967261] [2020-01-16 17:53:22,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:22,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:22,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684147754] [2020-01-16 17:53:22,151 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:22,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:22,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:22,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:22,152 INFO L87 Difference]: Start difference. First operand 6210 states and 34117 transitions. Second operand 13 states. [2020-01-16 17:53:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:22,496 INFO L93 Difference]: Finished difference Result 11851 states and 58475 transitions. [2020-01-16 17:53:22,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:22,497 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:22,526 INFO L225 Difference]: With dead ends: 11851 [2020-01-16 17:53:22,526 INFO L226 Difference]: Without dead ends: 11833 [2020-01-16 17:53:22,526 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11833 states. [2020-01-16 17:53:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11833 to 6216. [2020-01-16 17:53:23,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:53:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34128 transitions. [2020-01-16 17:53:23,164 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34128 transitions. Word has length 34 [2020-01-16 17:53:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:23,164 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34128 transitions. [2020-01-16 17:53:23,164 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34128 transitions. [2020-01-16 17:53:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:23,175 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:23,176 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:23,176 INFO L426 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash -26316692, now seen corresponding path program 36 times [2020-01-16 17:53:23,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:23,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794372857] [2020-01-16 17:53:23,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:23,871 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:53:24,018 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:24,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794372857] [2020-01-16 17:53:24,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:24,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:24,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317260685] [2020-01-16 17:53:24,029 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:24,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:24,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:24,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:24,029 INFO L87 Difference]: Start difference. First operand 6216 states and 34128 transitions. Second operand 13 states. [2020-01-16 17:53:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:24,324 INFO L93 Difference]: Finished difference Result 11855 states and 58477 transitions. [2020-01-16 17:53:24,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:24,325 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:24,354 INFO L225 Difference]: With dead ends: 11855 [2020-01-16 17:53:24,354 INFO L226 Difference]: Without dead ends: 11819 [2020-01-16 17:53:24,354 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11819 states. [2020-01-16 17:53:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11819 to 6202. [2020-01-16 17:53:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6202 states. [2020-01-16 17:53:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 34096 transitions. [2020-01-16 17:53:24,987 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 34096 transitions. Word has length 34 [2020-01-16 17:53:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:24,987 INFO L478 AbstractCegarLoop]: Abstraction has 6202 states and 34096 transitions. [2020-01-16 17:53:24,987 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 34096 transitions. [2020-01-16 17:53:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:24,997 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:24,998 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:24,998 INFO L426 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:24,998 INFO L82 PathProgramCache]: Analyzing trace with hash -709674192, now seen corresponding path program 37 times [2020-01-16 17:53:24,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:24,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355332655] [2020-01-16 17:53:24,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:25,562 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:53:25,702 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-01-16 17:53:25,850 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:25,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355332655] [2020-01-16 17:53:25,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:25,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:25,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986176340] [2020-01-16 17:53:25,861 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:25,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:25,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:25,862 INFO L87 Difference]: Start difference. First operand 6202 states and 34096 transitions. Second operand 13 states. [2020-01-16 17:53:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:26,187 INFO L93 Difference]: Finished difference Result 11849 states and 58476 transitions. [2020-01-16 17:53:26,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:26,187 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:26,217 INFO L225 Difference]: With dead ends: 11849 [2020-01-16 17:53:26,217 INFO L226 Difference]: Without dead ends: 11830 [2020-01-16 17:53:26,217 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11830 states. [2020-01-16 17:53:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11830 to 6217. [2020-01-16 17:53:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6217 states. [2020-01-16 17:53:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 34137 transitions. [2020-01-16 17:53:26,945 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 34137 transitions. Word has length 34 [2020-01-16 17:53:26,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:26,946 INFO L478 AbstractCegarLoop]: Abstraction has 6217 states and 34137 transitions. [2020-01-16 17:53:26,946 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:26,946 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 34137 transitions. [2020-01-16 17:53:26,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:26,957 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:26,957 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:26,957 INFO L426 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:26,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:26,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1694610476, now seen corresponding path program 38 times [2020-01-16 17:53:26,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:26,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760182863] [2020-01-16 17:53:26,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:27,542 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:53:27,693 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:53:27,841 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:27,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760182863] [2020-01-16 17:53:27,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:27,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:27,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992305717] [2020-01-16 17:53:27,852 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:27,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:27,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:27,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:27,853 INFO L87 Difference]: Start difference. First operand 6217 states and 34137 transitions. Second operand 13 states. [2020-01-16 17:53:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:28,205 INFO L93 Difference]: Finished difference Result 11854 states and 58478 transitions. [2020-01-16 17:53:28,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:28,206 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:28,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:28,235 INFO L225 Difference]: With dead ends: 11854 [2020-01-16 17:53:28,235 INFO L226 Difference]: Without dead ends: 11822 [2020-01-16 17:53:28,235 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:28,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2020-01-16 17:53:28,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 6209. [2020-01-16 17:53:28,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 17:53:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34115 transitions. [2020-01-16 17:53:28,865 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34115 transitions. Word has length 34 [2020-01-16 17:53:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:28,865 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34115 transitions. [2020-01-16 17:53:28,865 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34115 transitions. [2020-01-16 17:53:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:28,876 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:28,876 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:28,877 INFO L426 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1303436242, now seen corresponding path program 39 times [2020-01-16 17:53:28,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:28,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324661573] [2020-01-16 17:53:28,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:29,463 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 17:53:29,608 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-01-16 17:53:29,758 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:29,770 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324661573] [2020-01-16 17:53:29,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:29,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:29,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489961590] [2020-01-16 17:53:29,770 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:29,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:29,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:29,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:29,771 INFO L87 Difference]: Start difference. First operand 6209 states and 34115 transitions. Second operand 13 states. [2020-01-16 17:53:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:30,262 INFO L93 Difference]: Finished difference Result 11841 states and 58453 transitions. [2020-01-16 17:53:30,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:30,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:30,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:30,292 INFO L225 Difference]: With dead ends: 11841 [2020-01-16 17:53:30,292 INFO L226 Difference]: Without dead ends: 11822 [2020-01-16 17:53:30,293 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2020-01-16 17:53:30,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 6215. [2020-01-16 17:53:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:53:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34126 transitions. [2020-01-16 17:53:30,930 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34126 transitions. Word has length 34 [2020-01-16 17:53:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:30,930 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34126 transitions. [2020-01-16 17:53:30,930 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34126 transitions. [2020-01-16 17:53:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:30,942 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:30,942 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:30,942 INFO L426 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:30,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:30,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1912086904, now seen corresponding path program 40 times [2020-01-16 17:53:30,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:30,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782917991] [2020-01-16 17:53:30,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:31,501 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 17:53:31,735 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-01-16 17:53:31,884 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:31,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782917991] [2020-01-16 17:53:31,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:31,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:31,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518972105] [2020-01-16 17:53:31,896 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:31,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:31,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:31,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:31,896 INFO L87 Difference]: Start difference. First operand 6215 states and 34126 transitions. Second operand 13 states. [2020-01-16 17:53:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:32,226 INFO L93 Difference]: Finished difference Result 11840 states and 58445 transitions. [2020-01-16 17:53:32,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:32,227 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:32,257 INFO L225 Difference]: With dead ends: 11840 [2020-01-16 17:53:32,257 INFO L226 Difference]: Without dead ends: 11816 [2020-01-16 17:53:32,257 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11816 states. [2020-01-16 17:53:32,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11816 to 6209. [2020-01-16 17:53:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 17:53:32,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34109 transitions. [2020-01-16 17:53:32,892 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34109 transitions. Word has length 34 [2020-01-16 17:53:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:32,892 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34109 transitions. [2020-01-16 17:53:32,892 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34109 transitions. [2020-01-16 17:53:32,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:32,903 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:32,903 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:32,903 INFO L426 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:32,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:32,904 INFO L82 PathProgramCache]: Analyzing trace with hash -6309138, now seen corresponding path program 41 times [2020-01-16 17:53:32,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:32,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789602853] [2020-01-16 17:53:32,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:33,595 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:53:33,744 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:33,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789602853] [2020-01-16 17:53:33,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:33,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:33,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904301170] [2020-01-16 17:53:33,755 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:33,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:33,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:33,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:33,756 INFO L87 Difference]: Start difference. First operand 6209 states and 34109 transitions. Second operand 13 states. [2020-01-16 17:53:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:34,023 INFO L93 Difference]: Finished difference Result 11852 states and 58467 transitions. [2020-01-16 17:53:34,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:34,024 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:34,055 INFO L225 Difference]: With dead ends: 11852 [2020-01-16 17:53:34,055 INFO L226 Difference]: Without dead ends: 11828 [2020-01-16 17:53:34,055 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11828 states. [2020-01-16 17:53:34,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11828 to 6216. [2020-01-16 17:53:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:53:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34121 transitions. [2020-01-16 17:53:34,691 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34121 transitions. Word has length 34 [2020-01-16 17:53:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:34,692 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34121 transitions. [2020-01-16 17:53:34,692 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34121 transitions. [2020-01-16 17:53:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:34,703 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:34,703 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:34,703 INFO L426 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:34,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:34,704 INFO L82 PathProgramCache]: Analyzing trace with hash 267269468, now seen corresponding path program 42 times [2020-01-16 17:53:34,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:34,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375976511] [2020-01-16 17:53:34,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:35,356 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-01-16 17:53:35,503 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:35,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375976511] [2020-01-16 17:53:35,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:35,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:35,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776989667] [2020-01-16 17:53:35,514 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:35,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:35,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:35,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:35,514 INFO L87 Difference]: Start difference. First operand 6216 states and 34121 transitions. Second operand 13 states. [2020-01-16 17:53:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:35,842 INFO L93 Difference]: Finished difference Result 11846 states and 58449 transitions. [2020-01-16 17:53:35,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:35,843 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:35,873 INFO L225 Difference]: With dead ends: 11846 [2020-01-16 17:53:35,873 INFO L226 Difference]: Without dead ends: 11814 [2020-01-16 17:53:35,873 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:36,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2020-01-16 17:53:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 6202. [2020-01-16 17:53:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6202 states. [2020-01-16 17:53:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 34089 transitions. [2020-01-16 17:53:36,594 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 34089 transitions. Word has length 34 [2020-01-16 17:53:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:36,594 INFO L478 AbstractCegarLoop]: Abstraction has 6202 states and 34089 transitions. [2020-01-16 17:53:36,594 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 34089 transitions. [2020-01-16 17:53:36,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:36,605 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:36,605 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:36,605 INFO L426 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:36,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:36,606 INFO L82 PathProgramCache]: Analyzing trace with hash -455854420, now seen corresponding path program 43 times [2020-01-16 17:53:36,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:36,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704722192] [2020-01-16 17:53:36,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:37,139 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 17:53:37,282 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:53:37,435 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:37,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704722192] [2020-01-16 17:53:37,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:37,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:37,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574616126] [2020-01-16 17:53:37,446 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:37,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:37,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:37,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:37,447 INFO L87 Difference]: Start difference. First operand 6202 states and 34089 transitions. Second operand 13 states. [2020-01-16 17:53:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:37,812 INFO L93 Difference]: Finished difference Result 11836 states and 58443 transitions. [2020-01-16 17:53:37,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:37,812 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:37,841 INFO L225 Difference]: With dead ends: 11836 [2020-01-16 17:53:37,841 INFO L226 Difference]: Without dead ends: 11817 [2020-01-16 17:53:37,841 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11817 states. [2020-01-16 17:53:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11817 to 6214. [2020-01-16 17:53:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:53:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34123 transitions. [2020-01-16 17:53:38,471 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34123 transitions. Word has length 34 [2020-01-16 17:53:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:38,472 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34123 transitions. [2020-01-16 17:53:38,472 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34123 transitions. [2020-01-16 17:53:38,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:38,483 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:38,483 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:38,483 INFO L426 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:38,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:38,483 INFO L82 PathProgramCache]: Analyzing trace with hash 152796242, now seen corresponding path program 44 times [2020-01-16 17:53:38,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:38,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780415998] [2020-01-16 17:53:38,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:39,039 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 17:53:39,195 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:53:39,346 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:39,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780415998] [2020-01-16 17:53:39,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:39,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:39,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380406327] [2020-01-16 17:53:39,357 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:39,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:39,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:39,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:39,358 INFO L87 Difference]: Start difference. First operand 6214 states and 34123 transitions. Second operand 13 states. [2020-01-16 17:53:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:39,702 INFO L93 Difference]: Finished difference Result 11835 states and 58435 transitions. [2020-01-16 17:53:39,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:39,702 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:39,731 INFO L225 Difference]: With dead ends: 11835 [2020-01-16 17:53:39,731 INFO L226 Difference]: Without dead ends: 11811 [2020-01-16 17:53:39,731 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:40,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11811 states. [2020-01-16 17:53:40,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11811 to 6208. [2020-01-16 17:53:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6208 states. [2020-01-16 17:53:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 34106 transitions. [2020-01-16 17:53:40,363 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 34106 transitions. Word has length 34 [2020-01-16 17:53:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:40,364 INFO L478 AbstractCegarLoop]: Abstraction has 6208 states and 34106 transitions. [2020-01-16 17:53:40,364 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 34106 transitions. [2020-01-16 17:53:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:40,374 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:40,374 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:40,374 INFO L426 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:40,375 INFO L82 PathProgramCache]: Analyzing trace with hash -724600848, now seen corresponding path program 45 times [2020-01-16 17:53:40,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:40,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712036377] [2020-01-16 17:53:40,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:40,944 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 17:53:41,181 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:53:41,330 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:41,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712036377] [2020-01-16 17:53:41,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:41,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:41,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337608884] [2020-01-16 17:53:41,342 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:41,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:41,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:41,342 INFO L87 Difference]: Start difference. First operand 6208 states and 34106 transitions. Second operand 13 states. [2020-01-16 17:53:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:41,694 INFO L93 Difference]: Finished difference Result 11841 states and 58448 transitions. [2020-01-16 17:53:41,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:41,694 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:41,723 INFO L225 Difference]: With dead ends: 11841 [2020-01-16 17:53:41,723 INFO L226 Difference]: Without dead ends: 11822 [2020-01-16 17:53:41,724 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:42,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2020-01-16 17:53:42,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 6215. [2020-01-16 17:53:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:53:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34119 transitions. [2020-01-16 17:53:42,359 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34119 transitions. Word has length 34 [2020-01-16 17:53:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:42,359 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34119 transitions. [2020-01-16 17:53:42,359 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34119 transitions. [2020-01-16 17:53:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:42,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:42,370 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:42,370 INFO L426 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:42,371 INFO L82 PathProgramCache]: Analyzing trace with hash -933063602, now seen corresponding path program 46 times [2020-01-16 17:53:42,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:42,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327680611] [2020-01-16 17:53:42,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:43,072 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:53:43,219 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:43,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327680611] [2020-01-16 17:53:43,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:43,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:43,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825219231] [2020-01-16 17:53:43,230 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:43,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:43,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:43,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:43,231 INFO L87 Difference]: Start difference. First operand 6215 states and 34119 transitions. Second operand 13 states. [2020-01-16 17:53:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:43,649 INFO L93 Difference]: Finished difference Result 11844 states and 58447 transitions. [2020-01-16 17:53:43,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:43,650 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:43,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:43,678 INFO L225 Difference]: With dead ends: 11844 [2020-01-16 17:53:43,679 INFO L226 Difference]: Without dead ends: 11815 [2020-01-16 17:53:43,679 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11815 states. [2020-01-16 17:53:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11815 to 6208. [2020-01-16 17:53:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6208 states. [2020-01-16 17:53:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 34100 transitions. [2020-01-16 17:53:44,318 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 34100 transitions. Word has length 34 [2020-01-16 17:53:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:44,318 INFO L478 AbstractCegarLoop]: Abstraction has 6208 states and 34100 transitions. [2020-01-16 17:53:44,318 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 34100 transitions. [2020-01-16 17:53:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:44,329 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:44,329 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:44,329 INFO L426 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:44,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:44,330 INFO L82 PathProgramCache]: Analyzing trace with hash -136936970, now seen corresponding path program 47 times [2020-01-16 17:53:44,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:44,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534016279] [2020-01-16 17:53:44,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:45,003 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:53:45,154 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:45,165 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534016279] [2020-01-16 17:53:45,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:45,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:45,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252923629] [2020-01-16 17:53:45,166 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:45,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:45,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:45,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:45,166 INFO L87 Difference]: Start difference. First operand 6208 states and 34100 transitions. Second operand 13 states. [2020-01-16 17:53:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:45,493 INFO L93 Difference]: Finished difference Result 11838 states and 58435 transitions. [2020-01-16 17:53:45,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:45,494 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:45,524 INFO L225 Difference]: With dead ends: 11838 [2020-01-16 17:53:45,524 INFO L226 Difference]: Without dead ends: 11820 [2020-01-16 17:53:45,524 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11820 states. [2020-01-16 17:53:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11820 to 6214. [2020-01-16 17:53:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:53:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34111 transitions. [2020-01-16 17:53:46,245 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34111 transitions. Word has length 34 [2020-01-16 17:53:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:46,245 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34111 transitions. [2020-01-16 17:53:46,245 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34111 transitions. [2020-01-16 17:53:46,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:46,256 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:46,256 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:46,256 INFO L426 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:46,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:46,257 INFO L82 PathProgramCache]: Analyzing trace with hash 755237736, now seen corresponding path program 48 times [2020-01-16 17:53:46,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:46,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666437154] [2020-01-16 17:53:46,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:46,933 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:53:47,081 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:47,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666437154] [2020-01-16 17:53:47,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:47,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:47,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070237200] [2020-01-16 17:53:47,092 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:47,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:47,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:47,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:47,092 INFO L87 Difference]: Start difference. First operand 6214 states and 34111 transitions. Second operand 13 states. [2020-01-16 17:53:47,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:47,577 INFO L93 Difference]: Finished difference Result 11842 states and 58437 transitions. [2020-01-16 17:53:47,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:47,578 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:47,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:47,607 INFO L225 Difference]: With dead ends: 11842 [2020-01-16 17:53:47,607 INFO L226 Difference]: Without dead ends: 11800 [2020-01-16 17:53:47,607 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11800 states. [2020-01-16 17:53:48,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11800 to 6194. [2020-01-16 17:53:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6194 states. [2020-01-16 17:53:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 34068 transitions. [2020-01-16 17:53:48,241 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 34068 transitions. Word has length 34 [2020-01-16 17:53:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:48,241 INFO L478 AbstractCegarLoop]: Abstraction has 6194 states and 34068 transitions. [2020-01-16 17:53:48,241 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 34068 transitions. [2020-01-16 17:53:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:48,252 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:48,252 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:48,253 INFO L426 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:48,253 INFO L82 PathProgramCache]: Analyzing trace with hash -561652570, now seen corresponding path program 49 times [2020-01-16 17:53:48,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:48,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635563251] [2020-01-16 17:53:48,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:48,806 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:53:48,956 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:53:49,113 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:49,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635563251] [2020-01-16 17:53:49,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:49,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:49,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863730716] [2020-01-16 17:53:49,124 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:49,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:49,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:49,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:49,125 INFO L87 Difference]: Start difference. First operand 6194 states and 34068 transitions. Second operand 13 states. [2020-01-16 17:53:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:49,566 INFO L93 Difference]: Finished difference Result 11879 states and 58554 transitions. [2020-01-16 17:53:49,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:49,567 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:49,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:49,596 INFO L225 Difference]: With dead ends: 11879 [2020-01-16 17:53:49,596 INFO L226 Difference]: Without dead ends: 11855 [2020-01-16 17:53:49,596 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11855 states. [2020-01-16 17:53:50,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11855 to 6223. [2020-01-16 17:53:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-01-16 17:53:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 34155 transitions. [2020-01-16 17:53:50,230 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 34155 transitions. Word has length 34 [2020-01-16 17:53:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:50,231 INFO L478 AbstractCegarLoop]: Abstraction has 6223 states and 34155 transitions. [2020-01-16 17:53:50,231 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 34155 transitions. [2020-01-16 17:53:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:50,242 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:50,242 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:50,242 INFO L426 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:50,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1198119424, now seen corresponding path program 50 times [2020-01-16 17:53:50,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:50,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936801807] [2020-01-16 17:53:50,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:50,827 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:53:51,072 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:53:51,222 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:51,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936801807] [2020-01-16 17:53:51,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:51,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:51,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177436889] [2020-01-16 17:53:51,234 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:51,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:51,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:51,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:51,235 INFO L87 Difference]: Start difference. First operand 6223 states and 34155 transitions. Second operand 13 states. [2020-01-16 17:53:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:51,574 INFO L93 Difference]: Finished difference Result 11877 states and 58540 transitions. [2020-01-16 17:53:51,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:51,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:51,604 INFO L225 Difference]: With dead ends: 11877 [2020-01-16 17:53:51,604 INFO L226 Difference]: Without dead ends: 11843 [2020-01-16 17:53:51,605 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2020-01-16 17:53:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 6211. [2020-01-16 17:53:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:53:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34126 transitions. [2020-01-16 17:53:52,241 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34126 transitions. Word has length 34 [2020-01-16 17:53:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:52,241 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34126 transitions. [2020-01-16 17:53:52,241 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34126 transitions. [2020-01-16 17:53:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:52,252 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:52,252 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:52,252 INFO L426 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:52,252 INFO L82 PathProgramCache]: Analyzing trace with hash 239190494, now seen corresponding path program 51 times [2020-01-16 17:53:52,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:52,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785293145] [2020-01-16 17:53:52,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:52,941 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:53:53,094 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:53,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785293145] [2020-01-16 17:53:53,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:53,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:53,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49595121] [2020-01-16 17:53:53,106 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:53,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:53,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:53,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:53,107 INFO L87 Difference]: Start difference. First operand 6211 states and 34126 transitions. Second operand 13 states. [2020-01-16 17:53:53,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:53,349 INFO L93 Difference]: Finished difference Result 11870 states and 58525 transitions. [2020-01-16 17:53:53,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:53,350 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:53,378 INFO L225 Difference]: With dead ends: 11870 [2020-01-16 17:53:53,379 INFO L226 Difference]: Without dead ends: 11846 [2020-01-16 17:53:53,379 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2020-01-16 17:53:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 6218. [2020-01-16 17:53:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:53:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34138 transitions. [2020-01-16 17:53:54,012 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34138 transitions. Word has length 34 [2020-01-16 17:53:54,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:54,012 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34138 transitions. [2020-01-16 17:53:54,012 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34138 transitions. [2020-01-16 17:53:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:54,024 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:54,024 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:54,024 INFO L426 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash 27034876, now seen corresponding path program 52 times [2020-01-16 17:53:54,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:54,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093768285] [2020-01-16 17:53:54,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:54,739 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-01-16 17:53:54,890 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:53:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:54,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093768285] [2020-01-16 17:53:54,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:54,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:54,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414044721] [2020-01-16 17:53:54,902 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:54,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:54,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:54,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:54,903 INFO L87 Difference]: Start difference. First operand 6218 states and 34138 transitions. Second operand 13 states. [2020-01-16 17:53:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:55,198 INFO L93 Difference]: Finished difference Result 11864 states and 58507 transitions. [2020-01-16 17:53:55,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:55,199 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:55,228 INFO L225 Difference]: With dead ends: 11864 [2020-01-16 17:53:55,228 INFO L226 Difference]: Without dead ends: 11839 [2020-01-16 17:53:55,228 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:55,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11839 states. [2020-01-16 17:53:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11839 to 6211. [2020-01-16 17:53:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:53:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34119 transitions. [2020-01-16 17:53:55,952 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34119 transitions. Word has length 34 [2020-01-16 17:53:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:55,953 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34119 transitions. [2020-01-16 17:53:55,953 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34119 transitions. [2020-01-16 17:53:55,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:55,963 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:55,963 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:55,963 INFO L426 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:55,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1771398882, now seen corresponding path program 53 times [2020-01-16 17:53:55,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:55,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165380207] [2020-01-16 17:53:55,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:56,631 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:53:56,785 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:56,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165380207] [2020-01-16 17:53:56,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:56,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:56,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754163500] [2020-01-16 17:53:56,797 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:56,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:56,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:56,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:56,798 INFO L87 Difference]: Start difference. First operand 6211 states and 34119 transitions. Second operand 13 states. [2020-01-16 17:53:57,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:57,091 INFO L93 Difference]: Finished difference Result 11861 states and 58502 transitions. [2020-01-16 17:53:57,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:57,091 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:57,121 INFO L225 Difference]: With dead ends: 11861 [2020-01-16 17:53:57,121 INFO L226 Difference]: Without dead ends: 11843 [2020-01-16 17:53:57,121 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:57,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2020-01-16 17:53:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 6217. [2020-01-16 17:53:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6217 states. [2020-01-16 17:53:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 34130 transitions. [2020-01-16 17:53:57,756 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 34130 transitions. Word has length 34 [2020-01-16 17:53:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:57,756 INFO L478 AbstractCegarLoop]: Abstraction has 6217 states and 34130 transitions. [2020-01-16 17:53:57,757 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 34130 transitions. [2020-01-16 17:53:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:57,768 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:57,768 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:57,768 INFO L426 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:57,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1347087646, now seen corresponding path program 54 times [2020-01-16 17:53:57,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:57,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813814398] [2020-01-16 17:53:57,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:53:58,458 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:53:58,617 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:53:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:53:58,628 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813814398] [2020-01-16 17:53:58,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:53:58,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:53:58,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401510523] [2020-01-16 17:53:58,628 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:53:58,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:53:58,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:53:58,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:53:58,629 INFO L87 Difference]: Start difference. First operand 6217 states and 34130 transitions. Second operand 13 states. [2020-01-16 17:53:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:53:59,019 INFO L93 Difference]: Finished difference Result 11865 states and 58504 transitions. [2020-01-16 17:53:59,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:53:59,020 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:53:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:53:59,049 INFO L225 Difference]: With dead ends: 11865 [2020-01-16 17:53:59,049 INFO L226 Difference]: Without dead ends: 11829 [2020-01-16 17:53:59,049 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:53:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11829 states. [2020-01-16 17:53:59,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11829 to 6203. [2020-01-16 17:53:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6203 states. [2020-01-16 17:53:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6203 states to 6203 states and 34098 transitions. [2020-01-16 17:53:59,691 INFO L78 Accepts]: Start accepts. Automaton has 6203 states and 34098 transitions. Word has length 34 [2020-01-16 17:53:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:53:59,691 INFO L478 AbstractCegarLoop]: Abstraction has 6203 states and 34098 transitions. [2020-01-16 17:53:59,691 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:53:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 6203 states and 34098 transitions. [2020-01-16 17:53:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:53:59,702 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:53:59,702 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:53:59,703 INFO L426 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:53:59,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:53:59,703 INFO L82 PathProgramCache]: Analyzing trace with hash 165542264, now seen corresponding path program 55 times [2020-01-16 17:53:59,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:53:59,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805767979] [2020-01-16 17:53:59,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:53:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:00,265 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:54:00,416 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:54:00,566 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:54:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:00,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805767979] [2020-01-16 17:54:00,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:00,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:00,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320343649] [2020-01-16 17:54:00,577 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:00,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:00,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:00,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:00,578 INFO L87 Difference]: Start difference. First operand 6203 states and 34098 transitions. Second operand 13 states. [2020-01-16 17:54:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:00,898 INFO L93 Difference]: Finished difference Result 11892 states and 58583 transitions. [2020-01-16 17:54:00,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:00,899 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:00,928 INFO L225 Difference]: With dead ends: 11892 [2020-01-16 17:54:00,928 INFO L226 Difference]: Without dead ends: 11868 [2020-01-16 17:54:00,929 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11868 states. [2020-01-16 17:54:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11868 to 6227. [2020-01-16 17:54:01,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6227 states. [2020-01-16 17:54:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 34160 transitions. [2020-01-16 17:54:01,564 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 34160 transitions. Word has length 34 [2020-01-16 17:54:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:01,564 INFO L478 AbstractCegarLoop]: Abstraction has 6227 states and 34160 transitions. [2020-01-16 17:54:01,564 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 34160 transitions. [2020-01-16 17:54:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:01,577 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:01,578 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:01,578 INFO L426 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash -470924590, now seen corresponding path program 56 times [2020-01-16 17:54:01,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:01,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720089859] [2020-01-16 17:54:01,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:02,164 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:54:02,314 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:02,466 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:54:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:02,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720089859] [2020-01-16 17:54:02,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:02,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:02,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127590528] [2020-01-16 17:54:02,479 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:02,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:02,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:02,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:02,479 INFO L87 Difference]: Start difference. First operand 6227 states and 34160 transitions. Second operand 13 states. [2020-01-16 17:54:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:02,788 INFO L93 Difference]: Finished difference Result 11890 states and 58569 transitions. [2020-01-16 17:54:02,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:02,789 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:02,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:02,819 INFO L225 Difference]: With dead ends: 11890 [2020-01-16 17:54:02,819 INFO L226 Difference]: Without dead ends: 11856 [2020-01-16 17:54:02,819 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2020-01-16 17:54:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 6215. [2020-01-16 17:54:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:54:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34128 transitions. [2020-01-16 17:54:03,457 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34128 transitions. Word has length 34 [2020-01-16 17:54:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:03,458 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34128 transitions. [2020-01-16 17:54:03,458 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34128 transitions. [2020-01-16 17:54:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:03,469 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:03,469 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:03,469 INFO L426 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:03,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1093561694, now seen corresponding path program 57 times [2020-01-16 17:54:03,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:03,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892017022] [2020-01-16 17:54:03,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:04,033 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:04,188 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:54:04,337 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:04,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892017022] [2020-01-16 17:54:04,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:04,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:04,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314572862] [2020-01-16 17:54:04,349 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:04,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:04,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:04,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:04,349 INFO L87 Difference]: Start difference. First operand 6215 states and 34128 transitions. Second operand 13 states. [2020-01-16 17:54:04,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:04,618 INFO L93 Difference]: Finished difference Result 11889 states and 58566 transitions. [2020-01-16 17:54:04,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:04,618 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:04,647 INFO L225 Difference]: With dead ends: 11889 [2020-01-16 17:54:04,648 INFO L226 Difference]: Without dead ends: 11865 [2020-01-16 17:54:04,648 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:05,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11865 states. [2020-01-16 17:54:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11865 to 6225. [2020-01-16 17:54:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6225 states. [2020-01-16 17:54:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 34146 transitions. [2020-01-16 17:54:05,289 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 34146 transitions. Word has length 34 [2020-01-16 17:54:05,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:05,289 INFO L478 AbstractCegarLoop]: Abstraction has 6225 states and 34146 transitions. [2020-01-16 17:54:05,289 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 34146 transitions. [2020-01-16 17:54:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:05,300 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:05,300 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:05,300 INFO L426 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:05,300 INFO L82 PathProgramCache]: Analyzing trace with hash -603683250, now seen corresponding path program 58 times [2020-01-16 17:54:05,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:05,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610019376] [2020-01-16 17:54:05,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:05,437 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2020-01-16 17:54:05,950 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:06,096 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:54:06,246 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:06,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610019376] [2020-01-16 17:54:06,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:06,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:06,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763391919] [2020-01-16 17:54:06,259 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:06,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:06,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:06,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:06,259 INFO L87 Difference]: Start difference. First operand 6225 states and 34146 transitions. Second operand 13 states. [2020-01-16 17:54:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:06,563 INFO L93 Difference]: Finished difference Result 11886 states and 58551 transitions. [2020-01-16 17:54:06,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:06,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:06,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:06,593 INFO L225 Difference]: With dead ends: 11886 [2020-01-16 17:54:06,593 INFO L226 Difference]: Without dead ends: 11855 [2020-01-16 17:54:06,594 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11855 states. [2020-01-16 17:54:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11855 to 6215. [2020-01-16 17:54:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:54:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34118 transitions. [2020-01-16 17:54:07,234 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34118 transitions. Word has length 34 [2020-01-16 17:54:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:07,235 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34118 transitions. [2020-01-16 17:54:07,235 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34118 transitions. [2020-01-16 17:54:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:07,246 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:07,246 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:07,246 INFO L426 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:07,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:07,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2093508450, now seen corresponding path program 59 times [2020-01-16 17:54:07,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:07,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242316894] [2020-01-16 17:54:07,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:07,812 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:07,960 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:08,106 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:54:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:08,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242316894] [2020-01-16 17:54:08,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:08,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:08,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987860718] [2020-01-16 17:54:08,117 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:08,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:08,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:08,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:08,118 INFO L87 Difference]: Start difference. First operand 6215 states and 34118 transitions. Second operand 13 states. [2020-01-16 17:54:08,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:08,547 INFO L93 Difference]: Finished difference Result 11884 states and 58548 transitions. [2020-01-16 17:54:08,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:08,547 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:08,577 INFO L225 Difference]: With dead ends: 11884 [2020-01-16 17:54:08,577 INFO L226 Difference]: Without dead ends: 11862 [2020-01-16 17:54:08,577 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2020-01-16 17:54:09,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 6224. [2020-01-16 17:54:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6224 states. [2020-01-16 17:54:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 34135 transitions. [2020-01-16 17:54:09,212 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 34135 transitions. Word has length 34 [2020-01-16 17:54:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:09,212 INFO L478 AbstractCegarLoop]: Abstraction has 6224 states and 34135 transitions. [2020-01-16 17:54:09,212 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 34135 transitions. [2020-01-16 17:54:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:09,223 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:09,223 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:09,223 INFO L426 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:09,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1140680756, now seen corresponding path program 60 times [2020-01-16 17:54:09,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:09,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231102540] [2020-01-16 17:54:09,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:09,779 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:09,924 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:54:10,071 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:54:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:10,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231102540] [2020-01-16 17:54:10,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:10,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:10,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673889267] [2020-01-16 17:54:10,082 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:10,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:10,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:10,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:10,083 INFO L87 Difference]: Start difference. First operand 6224 states and 34135 transitions. Second operand 13 states. [2020-01-16 17:54:10,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:10,402 INFO L93 Difference]: Finished difference Result 11883 states and 58537 transitions. [2020-01-16 17:54:10,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:10,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:10,431 INFO L225 Difference]: With dead ends: 11883 [2020-01-16 17:54:10,431 INFO L226 Difference]: Without dead ends: 11841 [2020-01-16 17:54:10,432 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11841 states. [2020-01-16 17:54:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11841 to 6203. [2020-01-16 17:54:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6203 states. [2020-01-16 17:54:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6203 states to 6203 states and 34089 transitions. [2020-01-16 17:54:11,146 INFO L78 Accepts]: Start accepts. Automaton has 6203 states and 34089 transitions. Word has length 34 [2020-01-16 17:54:11,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:11,147 INFO L478 AbstractCegarLoop]: Abstraction has 6203 states and 34089 transitions. [2020-01-16 17:54:11,147 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 6203 states and 34089 transitions. [2020-01-16 17:54:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:11,157 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:11,157 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:11,157 INFO L426 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:11,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1056978248, now seen corresponding path program 61 times [2020-01-16 17:54:11,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:11,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813853277] [2020-01-16 17:54:11,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:11,833 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:54:11,985 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:11,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813853277] [2020-01-16 17:54:11,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:11,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:11,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201366763] [2020-01-16 17:54:11,997 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:11,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:11,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:11,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:11,998 INFO L87 Difference]: Start difference. First operand 6203 states and 34089 transitions. Second operand 13 states. [2020-01-16 17:54:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:12,263 INFO L93 Difference]: Finished difference Result 11866 states and 58508 transitions. [2020-01-16 17:54:12,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:12,263 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:12,292 INFO L225 Difference]: With dead ends: 11866 [2020-01-16 17:54:12,292 INFO L226 Difference]: Without dead ends: 11842 [2020-01-16 17:54:12,292 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2020-01-16 17:54:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 6217. [2020-01-16 17:54:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6217 states. [2020-01-16 17:54:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 34127 transitions. [2020-01-16 17:54:12,925 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 34127 transitions. Word has length 34 [2020-01-16 17:54:12,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:12,926 INFO L478 AbstractCegarLoop]: Abstraction has 6217 states and 34127 transitions. [2020-01-16 17:54:12,926 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 34127 transitions. [2020-01-16 17:54:12,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:12,937 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:12,937 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:12,937 INFO L426 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:12,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:12,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1269133866, now seen corresponding path program 62 times [2020-01-16 17:54:12,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:12,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970230977] [2020-01-16 17:54:12,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:13,604 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:13,756 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:13,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970230977] [2020-01-16 17:54:13,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:13,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:13,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58333033] [2020-01-16 17:54:13,768 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:13,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:13,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:13,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:13,769 INFO L87 Difference]: Start difference. First operand 6217 states and 34127 transitions. Second operand 13 states. [2020-01-16 17:54:14,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:14,068 INFO L93 Difference]: Finished difference Result 11860 states and 58490 transitions. [2020-01-16 17:54:14,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:14,068 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:14,096 INFO L225 Difference]: With dead ends: 11860 [2020-01-16 17:54:14,096 INFO L226 Difference]: Without dead ends: 11835 [2020-01-16 17:54:14,097 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11835 states. [2020-01-16 17:54:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11835 to 6210. [2020-01-16 17:54:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6210 states. [2020-01-16 17:54:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 34108 transitions. [2020-01-16 17:54:14,737 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 34108 transitions. Word has length 34 [2020-01-16 17:54:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:14,737 INFO L478 AbstractCegarLoop]: Abstraction has 6210 states and 34108 transitions. [2020-01-16 17:54:14,737 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 34108 transitions. [2020-01-16 17:54:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:14,748 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:14,748 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:14,748 INFO L426 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:14,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:14,748 INFO L82 PathProgramCache]: Analyzing trace with hash 149892902, now seen corresponding path program 63 times [2020-01-16 17:54:14,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:14,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392794612] [2020-01-16 17:54:14,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:15,418 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:15,572 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:54:15,816 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:15,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392794612] [2020-01-16 17:54:15,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:15,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:15,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446863423] [2020-01-16 17:54:15,828 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:15,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:15,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:15,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:15,828 INFO L87 Difference]: Start difference. First operand 6210 states and 34108 transitions. Second operand 13 states. [2020-01-16 17:54:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:16,130 INFO L93 Difference]: Finished difference Result 11872 states and 58516 transitions. [2020-01-16 17:54:16,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:16,130 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:16,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:16,159 INFO L225 Difference]: With dead ends: 11872 [2020-01-16 17:54:16,159 INFO L226 Difference]: Without dead ends: 11848 [2020-01-16 17:54:16,159 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2020-01-16 17:54:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 6220. [2020-01-16 17:54:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:54:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34126 transitions. [2020-01-16 17:54:16,793 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34126 transitions. Word has length 34 [2020-01-16 17:54:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:16,794 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34126 transitions. [2020-01-16 17:54:16,794 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34126 transitions. [2020-01-16 17:54:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:16,804 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:16,805 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:16,805 INFO L426 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:16,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:16,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1547352042, now seen corresponding path program 64 times [2020-01-16 17:54:16,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:16,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72147711] [2020-01-16 17:54:16,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:17,337 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:17,483 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:54:17,632 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:17,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72147711] [2020-01-16 17:54:17,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:17,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:17,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481902578] [2020-01-16 17:54:17,644 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:17,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:17,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:17,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:17,645 INFO L87 Difference]: Start difference. First operand 6220 states and 34126 transitions. Second operand 13 states. [2020-01-16 17:54:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:17,988 INFO L93 Difference]: Finished difference Result 11869 states and 58501 transitions. [2020-01-16 17:54:17,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:17,988 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:18,017 INFO L225 Difference]: With dead ends: 11869 [2020-01-16 17:54:18,017 INFO L226 Difference]: Without dead ends: 11838 [2020-01-16 17:54:18,018 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11838 states. [2020-01-16 17:54:18,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11838 to 6210. [2020-01-16 17:54:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6210 states. [2020-01-16 17:54:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 34101 transitions. [2020-01-16 17:54:18,654 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 34101 transitions. Word has length 34 [2020-01-16 17:54:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:18,654 INFO L478 AbstractCegarLoop]: Abstraction has 6210 states and 34101 transitions. [2020-01-16 17:54:18,654 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 34101 transitions. [2020-01-16 17:54:18,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:18,665 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:18,665 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:18,665 INFO L426 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:18,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:18,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1950847718, now seen corresponding path program 65 times [2020-01-16 17:54:18,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:18,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596393276] [2020-01-16 17:54:18,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:19,331 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:19,483 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:19,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596393276] [2020-01-16 17:54:19,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:19,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:19,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417839945] [2020-01-16 17:54:19,495 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:19,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:19,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:19,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:19,495 INFO L87 Difference]: Start difference. First operand 6210 states and 34101 transitions. Second operand 13 states. [2020-01-16 17:54:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:19,829 INFO L93 Difference]: Finished difference Result 11856 states and 58476 transitions. [2020-01-16 17:54:19,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:19,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:19,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:19,859 INFO L225 Difference]: With dead ends: 11856 [2020-01-16 17:54:19,859 INFO L226 Difference]: Without dead ends: 11838 [2020-01-16 17:54:19,859 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11838 states. [2020-01-16 17:54:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11838 to 6216. [2020-01-16 17:54:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:54:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34112 transitions. [2020-01-16 17:54:20,615 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34112 transitions. Word has length 34 [2020-01-16 17:54:20,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:20,615 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34112 transitions. [2020-01-16 17:54:20,615 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34112 transitions. [2020-01-16 17:54:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:20,627 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:20,627 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:20,627 INFO L426 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:20,627 INFO L82 PathProgramCache]: Analyzing trace with hash 465758392, now seen corresponding path program 66 times [2020-01-16 17:54:20,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:20,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966794028] [2020-01-16 17:54:20,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:21,309 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:54:21,465 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:21,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966794028] [2020-01-16 17:54:21,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:21,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:21,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721305822] [2020-01-16 17:54:21,477 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:21,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:21,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:21,477 INFO L87 Difference]: Start difference. First operand 6216 states and 34112 transitions. Second operand 13 states. [2020-01-16 17:54:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:21,844 INFO L93 Difference]: Finished difference Result 11859 states and 58476 transitions. [2020-01-16 17:54:21,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:21,845 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:21,875 INFO L225 Difference]: With dead ends: 11859 [2020-01-16 17:54:21,875 INFO L226 Difference]: Without dead ends: 11825 [2020-01-16 17:54:21,875 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11825 states. [2020-01-16 17:54:22,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11825 to 6203. [2020-01-16 17:54:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6203 states. [2020-01-16 17:54:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6203 states to 6203 states and 34082 transitions. [2020-01-16 17:54:22,512 INFO L78 Accepts]: Start accepts. Automaton has 6203 states and 34082 transitions. Word has length 34 [2020-01-16 17:54:22,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:22,512 INFO L478 AbstractCegarLoop]: Abstraction has 6203 states and 34082 transitions. [2020-01-16 17:54:22,512 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 6203 states and 34082 transitions. [2020-01-16 17:54:22,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:22,523 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:22,523 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:22,523 INFO L426 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:22,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1284060522, now seen corresponding path program 67 times [2020-01-16 17:54:22,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:22,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364019427] [2020-01-16 17:54:22,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:23,269 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:54:23,416 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:54:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:23,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364019427] [2020-01-16 17:54:23,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:23,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:23,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112966175] [2020-01-16 17:54:23,428 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:23,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:23,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:23,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:23,429 INFO L87 Difference]: Start difference. First operand 6203 states and 34082 transitions. Second operand 13 states. [2020-01-16 17:54:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:23,773 INFO L93 Difference]: Finished difference Result 11852 states and 58475 transitions. [2020-01-16 17:54:23,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:23,773 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:23,808 INFO L225 Difference]: With dead ends: 11852 [2020-01-16 17:54:23,808 INFO L226 Difference]: Without dead ends: 11834 [2020-01-16 17:54:23,809 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11834 states. [2020-01-16 17:54:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11834 to 6215. [2020-01-16 17:54:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:54:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34116 transitions. [2020-01-16 17:54:24,441 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34116 transitions. Word has length 34 [2020-01-16 17:54:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:24,441 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34116 transitions. [2020-01-16 17:54:24,441 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:24,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34116 transitions. [2020-01-16 17:54:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:24,452 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:24,452 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:24,453 INFO L426 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:24,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:24,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1708371758, now seen corresponding path program 68 times [2020-01-16 17:54:24,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:24,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597132766] [2020-01-16 17:54:24,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:25,178 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:25,327 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:54:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:25,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597132766] [2020-01-16 17:54:25,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:25,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:25,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165017771] [2020-01-16 17:54:25,338 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:25,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:25,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:25,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:25,339 INFO L87 Difference]: Start difference. First operand 6215 states and 34116 transitions. Second operand 13 states. [2020-01-16 17:54:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:25,690 INFO L93 Difference]: Finished difference Result 11856 states and 58477 transitions. [2020-01-16 17:54:25,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:25,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:25,719 INFO L225 Difference]: With dead ends: 11856 [2020-01-16 17:54:25,719 INFO L226 Difference]: Without dead ends: 11828 [2020-01-16 17:54:25,719 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:26,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11828 states. [2020-01-16 17:54:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11828 to 6209. [2020-01-16 17:54:26,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 17:54:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34099 transitions. [2020-01-16 17:54:26,430 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34099 transitions. Word has length 34 [2020-01-16 17:54:26,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:26,431 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34099 transitions. [2020-01-16 17:54:26,431 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:26,431 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34099 transitions. [2020-01-16 17:54:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:26,442 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:26,442 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:26,442 INFO L426 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:26,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:26,442 INFO L82 PathProgramCache]: Analyzing trace with hash 191557056, now seen corresponding path program 69 times [2020-01-16 17:54:26,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:26,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432131202] [2020-01-16 17:54:26,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:27,120 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:54:27,273 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:54:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:27,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432131202] [2020-01-16 17:54:27,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:27,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:27,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649446431] [2020-01-16 17:54:27,285 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:27,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:27,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:27,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:27,285 INFO L87 Difference]: Start difference. First operand 6209 states and 34099 transitions. Second operand 13 states. [2020-01-16 17:54:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:27,673 INFO L93 Difference]: Finished difference Result 11851 states and 58467 transitions. [2020-01-16 17:54:27,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:27,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:27,701 INFO L225 Difference]: With dead ends: 11851 [2020-01-16 17:54:27,702 INFO L226 Difference]: Without dead ends: 11833 [2020-01-16 17:54:27,702 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:28,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11833 states. [2020-01-16 17:54:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11833 to 6215. [2020-01-16 17:54:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:54:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34110 transitions. [2020-01-16 17:54:28,350 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34110 transitions. Word has length 34 [2020-01-16 17:54:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:28,350 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34110 transitions. [2020-01-16 17:54:28,350 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34110 transitions. [2020-01-16 17:54:28,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:28,362 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:28,362 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:28,362 INFO L426 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:28,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:28,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1293532270, now seen corresponding path program 70 times [2020-01-16 17:54:28,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:28,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185085465] [2020-01-16 17:54:28,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:29,055 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:54:29,208 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:54:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:29,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185085465] [2020-01-16 17:54:29,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:29,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:29,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681967607] [2020-01-16 17:54:29,220 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:29,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:29,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:29,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:29,221 INFO L87 Difference]: Start difference. First operand 6215 states and 34110 transitions. Second operand 13 states. [2020-01-16 17:54:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:29,708 INFO L93 Difference]: Finished difference Result 11854 states and 58467 transitions. [2020-01-16 17:54:29,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:29,708 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:29,738 INFO L225 Difference]: With dead ends: 11854 [2020-01-16 17:54:29,738 INFO L226 Difference]: Without dead ends: 11827 [2020-01-16 17:54:29,739 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:30,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11827 states. [2020-01-16 17:54:30,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11827 to 6209. [2020-01-16 17:54:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 17:54:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34093 transitions. [2020-01-16 17:54:30,380 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34093 transitions. Word has length 34 [2020-01-16 17:54:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:30,382 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34093 transitions. [2020-01-16 17:54:30,382 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34093 transitions. [2020-01-16 17:54:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:30,397 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:30,397 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:30,397 INFO L426 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:30,398 INFO L82 PathProgramCache]: Analyzing trace with hash -501500608, now seen corresponding path program 71 times [2020-01-16 17:54:30,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:30,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415915071] [2020-01-16 17:54:30,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:30,931 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:31,169 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:31,321 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:54:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:31,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415915071] [2020-01-16 17:54:31,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:31,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:31,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922983045] [2020-01-16 17:54:31,332 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:31,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:31,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:31,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:31,333 INFO L87 Difference]: Start difference. First operand 6209 states and 34093 transitions. Second operand 13 states. [2020-01-16 17:54:31,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:31,778 INFO L93 Difference]: Finished difference Result 11862 states and 58486 transitions. [2020-01-16 17:54:31,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:31,778 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:31,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:31,808 INFO L225 Difference]: With dead ends: 11862 [2020-01-16 17:54:31,808 INFO L226 Difference]: Without dead ends: 11840 [2020-01-16 17:54:31,808 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11840 states. [2020-01-16 17:54:32,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11840 to 6218. [2020-01-16 17:54:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:54:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34110 transitions. [2020-01-16 17:54:32,440 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34110 transitions. Word has length 34 [2020-01-16 17:54:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:32,440 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34110 transitions. [2020-01-16 17:54:32,440 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34110 transitions. [2020-01-16 17:54:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:32,450 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:32,451 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:32,451 INFO L426 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:32,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1562278698, now seen corresponding path program 72 times [2020-01-16 17:54:32,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:32,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741878419] [2020-01-16 17:54:32,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:32,999 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:33,146 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:54:33,290 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:54:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:33,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741878419] [2020-01-16 17:54:33,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:33,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:33,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983358868] [2020-01-16 17:54:33,303 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:33,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:33,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:33,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:33,303 INFO L87 Difference]: Start difference. First operand 6218 states and 34110 transitions. Second operand 13 states. [2020-01-16 17:54:33,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:33,644 INFO L93 Difference]: Finished difference Result 11861 states and 58475 transitions. [2020-01-16 17:54:33,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:33,645 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:33,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:33,683 INFO L225 Difference]: With dead ends: 11861 [2020-01-16 17:54:33,684 INFO L226 Difference]: Without dead ends: 11816 [2020-01-16 17:54:33,684 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11816 states. [2020-01-16 17:54:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11816 to 6194. [2020-01-16 17:54:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6194 states. [2020-01-16 17:54:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 34059 transitions. [2020-01-16 17:54:34,330 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 34059 transitions. Word has length 34 [2020-01-16 17:54:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:34,330 INFO L478 AbstractCegarLoop]: Abstraction has 6194 states and 34059 transitions. [2020-01-16 17:54:34,331 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:34,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 34059 transitions. [2020-01-16 17:54:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:34,341 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:34,342 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:34,342 INFO L426 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:34,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2058767766, now seen corresponding path program 73 times [2020-01-16 17:54:34,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:34,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209698757] [2020-01-16 17:54:34,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:34,900 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:54:35,048 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:35,196 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:35,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209698757] [2020-01-16 17:54:35,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:35,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:35,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206594159] [2020-01-16 17:54:35,207 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:35,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:35,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:35,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:35,207 INFO L87 Difference]: Start difference. First operand 6194 states and 34059 transitions. Second operand 13 states. [2020-01-16 17:54:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:35,501 INFO L93 Difference]: Finished difference Result 11843 states and 58462 transitions. [2020-01-16 17:54:35,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:35,502 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:35,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:35,530 INFO L225 Difference]: With dead ends: 11843 [2020-01-16 17:54:35,530 INFO L226 Difference]: Without dead ends: 11824 [2020-01-16 17:54:35,530 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11824 states. [2020-01-16 17:54:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11824 to 6216. [2020-01-16 17:54:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:54:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34133 transitions. [2020-01-16 17:54:36,270 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34133 transitions. Word has length 34 [2020-01-16 17:54:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:36,270 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34133 transitions. [2020-01-16 17:54:36,270 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:36,271 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34133 transitions. [2020-01-16 17:54:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:36,281 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:36,282 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:36,282 INFO L426 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:36,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:36,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1073831482, now seen corresponding path program 74 times [2020-01-16 17:54:36,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:36,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377742052] [2020-01-16 17:54:36,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:36,847 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:54:36,999 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:54:37,146 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:37,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377742052] [2020-01-16 17:54:37,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:37,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:37,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156607683] [2020-01-16 17:54:37,158 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:37,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:37,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:37,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:37,158 INFO L87 Difference]: Start difference. First operand 6216 states and 34133 transitions. Second operand 13 states. [2020-01-16 17:54:37,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:37,410 INFO L93 Difference]: Finished difference Result 11848 states and 58464 transitions. [2020-01-16 17:54:37,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:37,411 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:37,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:37,440 INFO L225 Difference]: With dead ends: 11848 [2020-01-16 17:54:37,441 INFO L226 Difference]: Without dead ends: 11816 [2020-01-16 17:54:37,441 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11816 states. [2020-01-16 17:54:38,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11816 to 6208. [2020-01-16 17:54:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6208 states. [2020-01-16 17:54:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 34111 transitions. [2020-01-16 17:54:38,077 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 34111 transitions. Word has length 34 [2020-01-16 17:54:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:38,078 INFO L478 AbstractCegarLoop]: Abstraction has 6208 states and 34111 transitions. [2020-01-16 17:54:38,078 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 34111 transitions. [2020-01-16 17:54:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:38,089 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:38,089 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:38,089 INFO L426 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:38,089 INFO L82 PathProgramCache]: Analyzing trace with hash -223089096, now seen corresponding path program 75 times [2020-01-16 17:54:38,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:38,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953713949] [2020-01-16 17:54:38,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:38,642 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:38,789 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:38,952 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:38,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953713949] [2020-01-16 17:54:38,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:38,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:38,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582506096] [2020-01-16 17:54:38,964 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:38,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:38,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:38,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:38,964 INFO L87 Difference]: Start difference. First operand 6208 states and 34111 transitions. Second operand 13 states. [2020-01-16 17:54:39,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:39,327 INFO L93 Difference]: Finished difference Result 11835 states and 58439 transitions. [2020-01-16 17:54:39,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:39,328 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:39,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:39,357 INFO L225 Difference]: With dead ends: 11835 [2020-01-16 17:54:39,357 INFO L226 Difference]: Without dead ends: 11816 [2020-01-16 17:54:39,357 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11816 states. [2020-01-16 17:54:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11816 to 6214. [2020-01-16 17:54:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:54:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34122 transitions. [2020-01-16 17:54:39,991 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34122 transitions. Word has length 34 [2020-01-16 17:54:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:39,991 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34122 transitions. [2020-01-16 17:54:39,991 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:39,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34122 transitions. [2020-01-16 17:54:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:40,002 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:40,002 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:40,003 INFO L426 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:40,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:40,003 INFO L82 PathProgramCache]: Analyzing trace with hash 385561566, now seen corresponding path program 76 times [2020-01-16 17:54:40,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:40,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513569173] [2020-01-16 17:54:40,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:40,551 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:40,698 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:40,848 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:40,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513569173] [2020-01-16 17:54:40,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:40,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:40,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880926551] [2020-01-16 17:54:40,860 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:40,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:40,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:40,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:40,860 INFO L87 Difference]: Start difference. First operand 6214 states and 34122 transitions. Second operand 13 states. [2020-01-16 17:54:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:41,166 INFO L93 Difference]: Finished difference Result 11834 states and 58431 transitions. [2020-01-16 17:54:41,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:41,167 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:41,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:41,195 INFO L225 Difference]: With dead ends: 11834 [2020-01-16 17:54:41,195 INFO L226 Difference]: Without dead ends: 11810 [2020-01-16 17:54:41,196 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11810 states. [2020-01-16 17:54:41,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11810 to 6208. [2020-01-16 17:54:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6208 states. [2020-01-16 17:54:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 34105 transitions. [2020-01-16 17:54:41,902 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 34105 transitions. Word has length 34 [2020-01-16 17:54:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:41,903 INFO L478 AbstractCegarLoop]: Abstraction has 6208 states and 34105 transitions. [2020-01-16 17:54:41,903 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 34105 transitions. [2020-01-16 17:54:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:41,914 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:41,914 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:41,914 INFO L426 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:41,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1532834476, now seen corresponding path program 77 times [2020-01-16 17:54:41,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:41,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517434841] [2020-01-16 17:54:41,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:42,587 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:54:42,739 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:42,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517434841] [2020-01-16 17:54:42,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:42,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:42,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824126899] [2020-01-16 17:54:42,750 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:42,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:42,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:42,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:42,751 INFO L87 Difference]: Start difference. First operand 6208 states and 34105 transitions. Second operand 13 states. [2020-01-16 17:54:43,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:43,105 INFO L93 Difference]: Finished difference Result 11846 states and 58453 transitions. [2020-01-16 17:54:43,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:43,106 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:43,135 INFO L225 Difference]: With dead ends: 11846 [2020-01-16 17:54:43,135 INFO L226 Difference]: Without dead ends: 11822 [2020-01-16 17:54:43,135 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2020-01-16 17:54:43,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 6215. [2020-01-16 17:54:43,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:54:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34117 transitions. [2020-01-16 17:54:43,767 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34117 transitions. Word has length 34 [2020-01-16 17:54:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:43,767 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34117 transitions. [2020-01-16 17:54:43,767 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:43,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34117 transitions. [2020-01-16 17:54:43,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:43,778 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:43,778 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:43,778 INFO L426 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:43,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:43,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1259255870, now seen corresponding path program 78 times [2020-01-16 17:54:43,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:43,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777714930] [2020-01-16 17:54:43,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:44,475 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:44,623 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:44,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777714930] [2020-01-16 17:54:44,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:44,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:44,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63889812] [2020-01-16 17:54:44,635 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:44,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:44,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:44,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:44,636 INFO L87 Difference]: Start difference. First operand 6215 states and 34117 transitions. Second operand 13 states. [2020-01-16 17:54:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:44,980 INFO L93 Difference]: Finished difference Result 11840 states and 58435 transitions. [2020-01-16 17:54:44,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:44,980 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:45,009 INFO L225 Difference]: With dead ends: 11840 [2020-01-16 17:54:45,009 INFO L226 Difference]: Without dead ends: 11808 [2020-01-16 17:54:45,009 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:45,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11808 states. [2020-01-16 17:54:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11808 to 6201. [2020-01-16 17:54:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6201 states. [2020-01-16 17:54:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6201 states to 6201 states and 34085 transitions. [2020-01-16 17:54:45,643 INFO L78 Accepts]: Start accepts. Automaton has 6201 states and 34085 transitions. Word has length 34 [2020-01-16 17:54:45,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:45,643 INFO L478 AbstractCegarLoop]: Abstraction has 6201 states and 34085 transitions. [2020-01-16 17:54:45,643 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6201 states and 34085 transitions. [2020-01-16 17:54:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:45,654 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:45,654 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:45,654 INFO L426 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:45,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:45,655 INFO L82 PathProgramCache]: Analyzing trace with hash 817067752, now seen corresponding path program 79 times [2020-01-16 17:54:45,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:45,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053249301] [2020-01-16 17:54:45,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:46,193 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:54:46,339 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:46,492 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:46,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053249301] [2020-01-16 17:54:46,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:46,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:46,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560753106] [2020-01-16 17:54:46,504 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:46,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:46,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:46,505 INFO L87 Difference]: Start difference. First operand 6201 states and 34085 transitions. Second operand 13 states. [2020-01-16 17:54:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:46,884 INFO L93 Difference]: Finished difference Result 11851 states and 58477 transitions. [2020-01-16 17:54:46,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:46,885 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:46,914 INFO L225 Difference]: With dead ends: 11851 [2020-01-16 17:54:46,914 INFO L226 Difference]: Without dead ends: 11832 [2020-01-16 17:54:46,915 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:47,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11832 states. [2020-01-16 17:54:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11832 to 6217. [2020-01-16 17:54:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6217 states. [2020-01-16 17:54:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 34130 transitions. [2020-01-16 17:54:47,552 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 34130 transitions. Word has length 34 [2020-01-16 17:54:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:47,552 INFO L478 AbstractCegarLoop]: Abstraction has 6217 states and 34130 transitions. [2020-01-16 17:54:47,552 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 34130 transitions. [2020-01-16 17:54:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:47,562 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:47,563 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:47,563 INFO L426 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:47,563 INFO L82 PathProgramCache]: Analyzing trace with hash -167868532, now seen corresponding path program 80 times [2020-01-16 17:54:47,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:47,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775406591] [2020-01-16 17:54:47,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:48,119 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:54:48,270 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:54:48,420 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:48,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775406591] [2020-01-16 17:54:48,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:48,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:48,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993407840] [2020-01-16 17:54:48,431 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:48,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:48,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:48,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:48,432 INFO L87 Difference]: Start difference. First operand 6217 states and 34130 transitions. Second operand 13 states. [2020-01-16 17:54:48,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:48,802 INFO L93 Difference]: Finished difference Result 11856 states and 58479 transitions. [2020-01-16 17:54:48,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:48,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:48,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:48,831 INFO L225 Difference]: With dead ends: 11856 [2020-01-16 17:54:48,832 INFO L226 Difference]: Without dead ends: 11824 [2020-01-16 17:54:48,832 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11824 states. [2020-01-16 17:54:49,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11824 to 6209. [2020-01-16 17:54:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 17:54:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34107 transitions. [2020-01-16 17:54:49,465 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34107 transitions. Word has length 34 [2020-01-16 17:54:49,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:49,465 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34107 transitions. [2020-01-16 17:54:49,465 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34107 transitions. [2020-01-16 17:54:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:49,477 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:49,477 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:49,477 INFO L426 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:49,477 INFO L82 PathProgramCache]: Analyzing trace with hash -257917960, now seen corresponding path program 81 times [2020-01-16 17:54:49,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:49,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654918136] [2020-01-16 17:54:49,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:50,160 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:50,310 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:50,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654918136] [2020-01-16 17:54:50,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:50,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:50,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855221297] [2020-01-16 17:54:50,321 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:50,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:50,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:50,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:50,322 INFO L87 Difference]: Start difference. First operand 6209 states and 34107 transitions. Second operand 13 states. [2020-01-16 17:54:50,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:50,775 INFO L93 Difference]: Finished difference Result 11847 states and 58462 transitions. [2020-01-16 17:54:50,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:50,775 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:50,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:50,804 INFO L225 Difference]: With dead ends: 11847 [2020-01-16 17:54:50,804 INFO L226 Difference]: Without dead ends: 11828 [2020-01-16 17:54:50,805 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11828 states. [2020-01-16 17:54:51,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11828 to 6216. [2020-01-16 17:54:51,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:54:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34120 transitions. [2020-01-16 17:54:51,449 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34120 transitions. Word has length 34 [2020-01-16 17:54:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:51,449 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34120 transitions. [2020-01-16 17:54:51,449 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34120 transitions. [2020-01-16 17:54:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:51,460 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:51,460 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:51,460 INFO L426 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:51,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1158242348, now seen corresponding path program 82 times [2020-01-16 17:54:51,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:51,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2789965] [2020-01-16 17:54:51,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:51,621 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2020-01-16 17:54:52,238 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:54:52,390 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:52,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2789965] [2020-01-16 17:54:52,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:52,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:52,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113394540] [2020-01-16 17:54:52,402 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:52,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:52,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:52,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:52,402 INFO L87 Difference]: Start difference. First operand 6216 states and 34120 transitions. Second operand 13 states. [2020-01-16 17:54:52,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:52,740 INFO L93 Difference]: Finished difference Result 11849 states and 58459 transitions. [2020-01-16 17:54:52,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:52,740 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:52,769 INFO L225 Difference]: With dead ends: 11849 [2020-01-16 17:54:52,769 INFO L226 Difference]: Without dead ends: 11821 [2020-01-16 17:54:52,769 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11821 states. [2020-01-16 17:54:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11821 to 6209. [2020-01-16 17:54:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 17:54:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34100 transitions. [2020-01-16 17:54:53,402 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34100 transitions. Word has length 34 [2020-01-16 17:54:53,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:53,402 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34100 transitions. [2020-01-16 17:54:53,402 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34100 transitions. [2020-01-16 17:54:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:53,413 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:53,413 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:53,413 INFO L426 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:53,414 INFO L82 PathProgramCache]: Analyzing trace with hash 783428056, now seen corresponding path program 83 times [2020-01-16 17:54:53,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:53,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423904665] [2020-01-16 17:54:53,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:53,943 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:54,098 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:54:54,247 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:54,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423904665] [2020-01-16 17:54:54,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:54,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:54,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893452711] [2020-01-16 17:54:54,258 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:54,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:54,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:54,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:54,259 INFO L87 Difference]: Start difference. First operand 6209 states and 34100 transitions. Second operand 13 states. [2020-01-16 17:54:54,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:54,552 INFO L93 Difference]: Finished difference Result 11860 states and 58481 transitions. [2020-01-16 17:54:54,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:54,552 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:54,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:54,581 INFO L225 Difference]: With dead ends: 11860 [2020-01-16 17:54:54,581 INFO L226 Difference]: Without dead ends: 11836 [2020-01-16 17:54:54,581 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11836 states. [2020-01-16 17:54:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11836 to 6219. [2020-01-16 17:54:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:54:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34118 transitions. [2020-01-16 17:54:55,217 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34118 transitions. Word has length 34 [2020-01-16 17:54:55,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:55,217 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34118 transitions. [2020-01-16 17:54:55,217 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34118 transitions. [2020-01-16 17:54:55,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:55,228 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:55,228 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:55,229 INFO L426 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:55,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:55,229 INFO L82 PathProgramCache]: Analyzing trace with hash -469787928, now seen corresponding path program 84 times [2020-01-16 17:54:55,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:55,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296263116] [2020-01-16 17:54:55,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:55,782 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:55,931 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:54:56,083 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:56,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296263116] [2020-01-16 17:54:56,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:56,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:56,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307435238] [2020-01-16 17:54:56,094 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:56,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:56,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:56,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:56,095 INFO L87 Difference]: Start difference. First operand 6219 states and 34118 transitions. Second operand 13 states. [2020-01-16 17:54:56,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:56,394 INFO L93 Difference]: Finished difference Result 11857 states and 58466 transitions. [2020-01-16 17:54:56,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:56,395 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:56,423 INFO L225 Difference]: With dead ends: 11857 [2020-01-16 17:54:56,424 INFO L226 Difference]: Without dead ends: 11818 [2020-01-16 17:54:56,424 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11818 states. [2020-01-16 17:54:57,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11818 to 6201. [2020-01-16 17:54:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6201 states. [2020-01-16 17:54:57,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6201 states to 6201 states and 34078 transitions. [2020-01-16 17:54:57,164 INFO L78 Accepts]: Start accepts. Automaton has 6201 states and 34078 transitions. Word has length 34 [2020-01-16 17:54:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:57,165 INFO L478 AbstractCegarLoop]: Abstraction has 6201 states and 34078 transitions. [2020-01-16 17:54:57,165 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6201 states and 34078 transitions. [2020-01-16 17:54:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:57,176 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:57,176 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:57,176 INFO L426 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:57,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:57,176 INFO L82 PathProgramCache]: Analyzing trace with hash 812092200, now seen corresponding path program 85 times [2020-01-16 17:54:57,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:57,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409033072] [2020-01-16 17:54:57,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:57,828 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:57,978 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:58,129 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:58,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409033072] [2020-01-16 17:54:58,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:58,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:58,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948496382] [2020-01-16 17:54:58,140 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:58,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:58,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:58,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:58,141 INFO L87 Difference]: Start difference. First operand 6201 states and 34078 transitions. Second operand 13 states. [2020-01-16 17:54:58,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:54:58,453 INFO L93 Difference]: Finished difference Result 11829 states and 58420 transitions. [2020-01-16 17:54:58,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:54:58,453 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:54:58,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:54:58,481 INFO L225 Difference]: With dead ends: 11829 [2020-01-16 17:54:58,482 INFO L226 Difference]: Without dead ends: 11810 [2020-01-16 17:54:58,482 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:54:58,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11810 states. [2020-01-16 17:54:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11810 to 6213. [2020-01-16 17:54:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:54:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34112 transitions. [2020-01-16 17:54:59,120 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34112 transitions. Word has length 34 [2020-01-16 17:54:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:54:59,121 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34112 transitions. [2020-01-16 17:54:59,121 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:54:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34112 transitions. [2020-01-16 17:54:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:54:59,131 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:54:59,132 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:54:59,132 INFO L426 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:54:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:54:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1420742862, now seen corresponding path program 86 times [2020-01-16 17:54:59,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:54:59,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768894772] [2020-01-16 17:54:59,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:54:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:54:59,668 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:54:59,813 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:54:59,966 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:54:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:54:59,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768894772] [2020-01-16 17:54:59,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:54:59,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:54:59,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577894046] [2020-01-16 17:54:59,978 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:54:59,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:54:59,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:54:59,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:54:59,978 INFO L87 Difference]: Start difference. First operand 6213 states and 34112 transitions. Second operand 13 states. [2020-01-16 17:55:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:00,286 INFO L93 Difference]: Finished difference Result 11828 states and 58412 transitions. [2020-01-16 17:55:00,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:00,287 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:00,316 INFO L225 Difference]: With dead ends: 11828 [2020-01-16 17:55:00,316 INFO L226 Difference]: Without dead ends: 11804 [2020-01-16 17:55:00,317 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11804 states. [2020-01-16 17:55:00,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11804 to 6207. [2020-01-16 17:55:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6207 states. [2020-01-16 17:55:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 34095 transitions. [2020-01-16 17:55:00,948 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 34095 transitions. Word has length 34 [2020-01-16 17:55:00,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:00,949 INFO L478 AbstractCegarLoop]: Abstraction has 6207 states and 34095 transitions. [2020-01-16 17:55:00,949 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 34095 transitions. [2020-01-16 17:55:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:00,960 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:00,960 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:00,960 INFO L426 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:00,960 INFO L82 PathProgramCache]: Analyzing trace with hash 2018963350, now seen corresponding path program 87 times [2020-01-16 17:55:00,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:00,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593486440] [2020-01-16 17:55:00,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:01,641 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:55:01,790 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:01,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593486440] [2020-01-16 17:55:01,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:01,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:01,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858556965] [2020-01-16 17:55:01,802 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:01,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:01,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:01,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:01,802 INFO L87 Difference]: Start difference. First operand 6207 states and 34095 transitions. Second operand 13 states. [2020-01-16 17:55:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:02,115 INFO L93 Difference]: Finished difference Result 11833 states and 58423 transitions. [2020-01-16 17:55:02,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:02,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:02,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:02,145 INFO L225 Difference]: With dead ends: 11833 [2020-01-16 17:55:02,145 INFO L226 Difference]: Without dead ends: 11814 [2020-01-16 17:55:02,145 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2020-01-16 17:55:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 6214. [2020-01-16 17:55:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:55:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34108 transitions. [2020-01-16 17:55:02,854 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34108 transitions. Word has length 34 [2020-01-16 17:55:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:02,854 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34108 transitions. [2020-01-16 17:55:02,854 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34108 transitions. [2020-01-16 17:55:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:02,865 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:02,865 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:02,865 INFO L426 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:02,866 INFO L82 PathProgramCache]: Analyzing trace with hash -859843638, now seen corresponding path program 88 times [2020-01-16 17:55:02,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:02,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368317506] [2020-01-16 17:55:02,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:03,533 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:03,686 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:03,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368317506] [2020-01-16 17:55:03,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:03,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:03,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260449504] [2020-01-16 17:55:03,697 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:03,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:03,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:03,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:03,698 INFO L87 Difference]: Start difference. First operand 6214 states and 34108 transitions. Second operand 13 states. [2020-01-16 17:55:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:04,083 INFO L93 Difference]: Finished difference Result 11835 states and 58420 transitions. [2020-01-16 17:55:04,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:04,083 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:04,113 INFO L225 Difference]: With dead ends: 11835 [2020-01-16 17:55:04,113 INFO L226 Difference]: Without dead ends: 11807 [2020-01-16 17:55:04,114 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11807 states. [2020-01-16 17:55:04,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11807 to 6207. [2020-01-16 17:55:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6207 states. [2020-01-16 17:55:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 34089 transitions. [2020-01-16 17:55:04,746 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 34089 transitions. Word has length 34 [2020-01-16 17:55:04,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:04,746 INFO L478 AbstractCegarLoop]: Abstraction has 6207 states and 34089 transitions. [2020-01-16 17:55:04,746 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:04,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 34089 transitions. [2020-01-16 17:55:04,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:04,757 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:04,757 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:04,757 INFO L426 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:04,758 INFO L82 PathProgramCache]: Analyzing trace with hash 526171826, now seen corresponding path program 89 times [2020-01-16 17:55:04,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:04,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9133839] [2020-01-16 17:55:04,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:05,437 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:55:05,588 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:05,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9133839] [2020-01-16 17:55:05,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:05,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:05,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624500587] [2020-01-16 17:55:05,598 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:05,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:05,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:05,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:05,599 INFO L87 Difference]: Start difference. First operand 6207 states and 34089 transitions. Second operand 13 states. [2020-01-16 17:55:05,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:05,945 INFO L93 Difference]: Finished difference Result 11830 states and 58410 transitions. [2020-01-16 17:55:05,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:05,946 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:05,975 INFO L225 Difference]: With dead ends: 11830 [2020-01-16 17:55:05,975 INFO L226 Difference]: Without dead ends: 11812 [2020-01-16 17:55:05,976 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11812 states. [2020-01-16 17:55:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11812 to 6213. [2020-01-16 17:55:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:55:06,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34100 transitions. [2020-01-16 17:55:06,621 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34100 transitions. Word has length 34 [2020-01-16 17:55:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:06,621 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34100 transitions. [2020-01-16 17:55:06,621 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34100 transitions. [2020-01-16 17:55:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:06,632 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:06,632 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:06,632 INFO L426 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash 828457700, now seen corresponding path program 90 times [2020-01-16 17:55:06,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:06,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200522945] [2020-01-16 17:55:06,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:07,311 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:07,467 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:07,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200522945] [2020-01-16 17:55:07,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:07,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:07,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588067463] [2020-01-16 17:55:07,479 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:07,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:07,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:07,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:07,479 INFO L87 Difference]: Start difference. First operand 6213 states and 34100 transitions. Second operand 13 states. [2020-01-16 17:55:07,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:07,928 INFO L93 Difference]: Finished difference Result 11833 states and 58410 transitions. [2020-01-16 17:55:07,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:07,929 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:07,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:07,959 INFO L225 Difference]: With dead ends: 11833 [2020-01-16 17:55:07,960 INFO L226 Difference]: Without dead ends: 11800 [2020-01-16 17:55:07,960 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:08,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11800 states. [2020-01-16 17:55:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11800 to 6201. [2020-01-16 17:55:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6201 states. [2020-01-16 17:55:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6201 states to 6201 states and 34072 transitions. [2020-01-16 17:55:08,591 INFO L78 Accepts]: Start accepts. Automaton has 6201 states and 34072 transitions. Word has length 34 [2020-01-16 17:55:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:08,591 INFO L478 AbstractCegarLoop]: Abstraction has 6201 states and 34072 transitions. [2020-01-16 17:55:08,591 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:08,591 INFO L276 IsEmpty]: Start isEmpty. Operand 6201 states and 34072 transitions. [2020-01-16 17:55:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:08,602 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:08,602 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:08,602 INFO L426 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash 800234480, now seen corresponding path program 91 times [2020-01-16 17:55:08,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:08,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692182855] [2020-01-16 17:55:08,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:09,316 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:55:09,465 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:09,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692182855] [2020-01-16 17:55:09,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:09,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:09,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246474302] [2020-01-16 17:55:09,476 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:09,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:09,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:09,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:09,476 INFO L87 Difference]: Start difference. First operand 6201 states and 34072 transitions. Second operand 13 states. [2020-01-16 17:55:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:09,909 INFO L93 Difference]: Finished difference Result 11850 states and 58456 transitions. [2020-01-16 17:55:09,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:09,910 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:09,939 INFO L225 Difference]: With dead ends: 11850 [2020-01-16 17:55:09,939 INFO L226 Difference]: Without dead ends: 11826 [2020-01-16 17:55:09,939 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11826 states. [2020-01-16 17:55:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11826 to 6215. [2020-01-16 17:55:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:55:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34110 transitions. [2020-01-16 17:55:10,572 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34110 transitions. Word has length 34 [2020-01-16 17:55:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:10,572 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34110 transitions. [2020-01-16 17:55:10,572 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34110 transitions. [2020-01-16 17:55:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:10,583 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:10,583 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:10,583 INFO L426 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:10,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:10,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1073813086, now seen corresponding path program 92 times [2020-01-16 17:55:10,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:10,584 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729590483] [2020-01-16 17:55:10,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:11,249 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:55:11,402 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:11,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729590483] [2020-01-16 17:55:11,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:11,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:11,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865468827] [2020-01-16 17:55:11,413 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:11,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:11,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:11,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:11,413 INFO L87 Difference]: Start difference. First operand 6215 states and 34110 transitions. Second operand 13 states. [2020-01-16 17:55:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:11,835 INFO L93 Difference]: Finished difference Result 11844 states and 58438 transitions. [2020-01-16 17:55:11,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:11,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:11,865 INFO L225 Difference]: With dead ends: 11844 [2020-01-16 17:55:11,865 INFO L226 Difference]: Without dead ends: 11819 [2020-01-16 17:55:11,865 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11819 states. [2020-01-16 17:55:12,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11819 to 6208. [2020-01-16 17:55:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6208 states. [2020-01-16 17:55:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 34091 transitions. [2020-01-16 17:55:12,500 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 34091 transitions. Word has length 34 [2020-01-16 17:55:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:12,501 INFO L478 AbstractCegarLoop]: Abstraction has 6208 states and 34091 transitions. [2020-01-16 17:55:12,501 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 34091 transitions. [2020-01-16 17:55:12,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:12,512 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:12,512 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:12,512 INFO L426 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:12,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1581161982, now seen corresponding path program 93 times [2020-01-16 17:55:12,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:12,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909428321] [2020-01-16 17:55:12,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:13,043 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:55:13,291 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:55:13,440 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:13,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909428321] [2020-01-16 17:55:13,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:13,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:13,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230611842] [2020-01-16 17:55:13,451 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:13,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:13,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:13,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:13,452 INFO L87 Difference]: Start difference. First operand 6208 states and 34091 transitions. Second operand 13 states. [2020-01-16 17:55:13,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:13,739 INFO L93 Difference]: Finished difference Result 11856 states and 58464 transitions. [2020-01-16 17:55:13,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:13,739 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:13,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:13,767 INFO L225 Difference]: With dead ends: 11856 [2020-01-16 17:55:13,767 INFO L226 Difference]: Without dead ends: 11832 [2020-01-16 17:55:13,768 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:14,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11832 states. [2020-01-16 17:55:14,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11832 to 6218. [2020-01-16 17:55:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:55:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34109 transitions. [2020-01-16 17:55:14,407 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34109 transitions. Word has length 34 [2020-01-16 17:55:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:14,407 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34109 transitions. [2020-01-16 17:55:14,407 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34109 transitions. [2020-01-16 17:55:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:14,418 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:14,418 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:14,418 INFO L426 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:14,418 INFO L82 PathProgramCache]: Analyzing trace with hash 327945998, now seen corresponding path program 94 times [2020-01-16 17:55:14,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:14,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822260214] [2020-01-16 17:55:14,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:15,091 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:15,238 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:15,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822260214] [2020-01-16 17:55:15,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:15,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:15,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383099819] [2020-01-16 17:55:15,248 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:15,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:15,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:15,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:15,248 INFO L87 Difference]: Start difference. First operand 6218 states and 34109 transitions. Second operand 13 states. [2020-01-16 17:55:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:15,545 INFO L93 Difference]: Finished difference Result 11853 states and 58449 transitions. [2020-01-16 17:55:15,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:15,545 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:15,573 INFO L225 Difference]: With dead ends: 11853 [2020-01-16 17:55:15,574 INFO L226 Difference]: Without dead ends: 11822 [2020-01-16 17:55:15,574 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:16,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2020-01-16 17:55:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 6208. [2020-01-16 17:55:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6208 states. [2020-01-16 17:55:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 34084 transitions. [2020-01-16 17:55:16,208 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 34084 transitions. Word has length 34 [2020-01-16 17:55:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:16,209 INFO L478 AbstractCegarLoop]: Abstraction has 6208 states and 34084 transitions. [2020-01-16 17:55:16,209 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 34084 transitions. [2020-01-16 17:55:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:16,220 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:16,220 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:16,220 INFO L426 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:16,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:16,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1076438862, now seen corresponding path program 95 times [2020-01-16 17:55:16,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:16,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365592621] [2020-01-16 17:55:16,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:16,900 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:55:17,047 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:17,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365592621] [2020-01-16 17:55:17,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:17,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:17,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622276856] [2020-01-16 17:55:17,058 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:17,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:17,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:17,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:17,059 INFO L87 Difference]: Start difference. First operand 6208 states and 34084 transitions. Second operand 13 states. [2020-01-16 17:55:17,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:17,381 INFO L93 Difference]: Finished difference Result 11840 states and 58424 transitions. [2020-01-16 17:55:17,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:17,381 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:17,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:17,409 INFO L225 Difference]: With dead ends: 11840 [2020-01-16 17:55:17,410 INFO L226 Difference]: Without dead ends: 11822 [2020-01-16 17:55:17,410 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2020-01-16 17:55:18,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 6214. [2020-01-16 17:55:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:55:18,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34095 transitions. [2020-01-16 17:55:18,049 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34095 transitions. Word has length 34 [2020-01-16 17:55:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:18,049 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34095 transitions. [2020-01-16 17:55:18,049 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34095 transitions. [2020-01-16 17:55:18,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:18,060 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:18,060 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:18,060 INFO L426 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:18,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1378724736, now seen corresponding path program 96 times [2020-01-16 17:55:18,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:18,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622483764] [2020-01-16 17:55:18,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:18,427 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-01-16 17:55:18,854 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:19,003 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:55:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:19,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622483764] [2020-01-16 17:55:19,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:19,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:19,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270991651] [2020-01-16 17:55:19,014 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:19,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:19,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:19,015 INFO L87 Difference]: Start difference. First operand 6214 states and 34095 transitions. Second operand 13 states. [2020-01-16 17:55:19,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:19,315 INFO L93 Difference]: Finished difference Result 11843 states and 58424 transitions. [2020-01-16 17:55:19,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:19,316 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:19,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:19,346 INFO L225 Difference]: With dead ends: 11843 [2020-01-16 17:55:19,346 INFO L226 Difference]: Without dead ends: 11802 [2020-01-16 17:55:19,346 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11802 states. [2020-01-16 17:55:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11802 to 6194. [2020-01-16 17:55:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6194 states. [2020-01-16 17:55:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 34052 transitions. [2020-01-16 17:55:19,979 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 34052 transitions. Word has length 34 [2020-01-16 17:55:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:19,979 INFO L478 AbstractCegarLoop]: Abstraction has 6194 states and 34052 transitions. [2020-01-16 17:55:19,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 34052 transitions. [2020-01-16 17:55:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:19,990 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:19,990 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:19,991 INFO L426 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:19,991 INFO L82 PathProgramCache]: Analyzing trace with hash -685815432, now seen corresponding path program 97 times [2020-01-16 17:55:19,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:19,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639594537] [2020-01-16 17:55:19,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:20,524 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 17:55:20,666 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:20,819 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:20,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639594537] [2020-01-16 17:55:20,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:20,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:20,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826027937] [2020-01-16 17:55:20,831 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:20,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:20,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:20,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:20,831 INFO L87 Difference]: Start difference. First operand 6194 states and 34052 transitions. Second operand 13 states. [2020-01-16 17:55:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:21,178 INFO L93 Difference]: Finished difference Result 11821 states and 58407 transitions. [2020-01-16 17:55:21,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:21,179 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:21,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:21,208 INFO L225 Difference]: With dead ends: 11821 [2020-01-16 17:55:21,208 INFO L226 Difference]: Without dead ends: 11802 [2020-01-16 17:55:21,209 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11802 states. [2020-01-16 17:55:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11802 to 6212. [2020-01-16 17:55:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:55:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34115 transitions. [2020-01-16 17:55:21,849 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34115 transitions. Word has length 34 [2020-01-16 17:55:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:21,849 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34115 transitions. [2020-01-16 17:55:21,849 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34115 transitions. [2020-01-16 17:55:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:21,860 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:21,860 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:21,860 INFO L426 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:21,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:21,860 INFO L82 PathProgramCache]: Analyzing trace with hash -77164770, now seen corresponding path program 98 times [2020-01-16 17:55:21,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:21,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12865328] [2020-01-16 17:55:21,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:22,397 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 17:55:22,539 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:22,691 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:22,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12865328] [2020-01-16 17:55:22,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:22,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:22,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345464504] [2020-01-16 17:55:22,703 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:22,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:22,704 INFO L87 Difference]: Start difference. First operand 6212 states and 34115 transitions. Second operand 13 states. [2020-01-16 17:55:23,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:23,011 INFO L93 Difference]: Finished difference Result 11820 states and 58399 transitions. [2020-01-16 17:55:23,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:23,011 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:23,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:23,040 INFO L225 Difference]: With dead ends: 11820 [2020-01-16 17:55:23,040 INFO L226 Difference]: Without dead ends: 11796 [2020-01-16 17:55:23,040 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11796 states. [2020-01-16 17:55:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11796 to 6206. [2020-01-16 17:55:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6206 states. [2020-01-16 17:55:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34098 transitions. [2020-01-16 17:55:23,794 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34098 transitions. Word has length 34 [2020-01-16 17:55:23,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:23,794 INFO L478 AbstractCegarLoop]: Abstraction has 6206 states and 34098 transitions. [2020-01-16 17:55:23,794 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34098 transitions. [2020-01-16 17:55:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:23,805 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:23,805 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:23,805 INFO L426 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:23,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash -954561860, now seen corresponding path program 99 times [2020-01-16 17:55:23,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:23,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207212176] [2020-01-16 17:55:23,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:24,344 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 17:55:24,491 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:24,643 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:24,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207212176] [2020-01-16 17:55:24,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:24,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:24,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596253148] [2020-01-16 17:55:24,654 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:24,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:24,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:24,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:24,654 INFO L87 Difference]: Start difference. First operand 6206 states and 34098 transitions. Second operand 13 states. [2020-01-16 17:55:24,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:24,950 INFO L93 Difference]: Finished difference Result 11826 states and 58412 transitions. [2020-01-16 17:55:24,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:24,951 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:24,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:24,981 INFO L225 Difference]: With dead ends: 11826 [2020-01-16 17:55:24,982 INFO L226 Difference]: Without dead ends: 11807 [2020-01-16 17:55:24,982 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11807 states. [2020-01-16 17:55:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11807 to 6213. [2020-01-16 17:55:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:55:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34111 transitions. [2020-01-16 17:55:25,617 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34111 transitions. Word has length 34 [2020-01-16 17:55:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:25,617 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34111 transitions. [2020-01-16 17:55:25,617 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34111 transitions. [2020-01-16 17:55:25,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:25,628 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:25,628 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:25,628 INFO L426 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:25,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1163024614, now seen corresponding path program 100 times [2020-01-16 17:55:25,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:25,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482613847] [2020-01-16 17:55:25,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:26,312 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:55:26,462 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:26,474 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482613847] [2020-01-16 17:55:26,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:26,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:26,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255366309] [2020-01-16 17:55:26,474 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:26,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:26,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:26,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:26,475 INFO L87 Difference]: Start difference. First operand 6213 states and 34111 transitions. Second operand 13 states. [2020-01-16 17:55:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:26,779 INFO L93 Difference]: Finished difference Result 11829 states and 58411 transitions. [2020-01-16 17:55:26,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:26,780 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:26,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:26,809 INFO L225 Difference]: With dead ends: 11829 [2020-01-16 17:55:26,809 INFO L226 Difference]: Without dead ends: 11800 [2020-01-16 17:55:26,809 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11800 states. [2020-01-16 17:55:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11800 to 6206. [2020-01-16 17:55:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6206 states. [2020-01-16 17:55:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34092 transitions. [2020-01-16 17:55:27,445 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34092 transitions. Word has length 34 [2020-01-16 17:55:27,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:27,445 INFO L478 AbstractCegarLoop]: Abstraction has 6206 states and 34092 transitions. [2020-01-16 17:55:27,445 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:27,445 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34092 transitions. [2020-01-16 17:55:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:27,456 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:27,456 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:27,456 INFO L426 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:27,456 INFO L82 PathProgramCache]: Analyzing trace with hash -366897982, now seen corresponding path program 101 times [2020-01-16 17:55:27,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:27,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175421684] [2020-01-16 17:55:27,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:28,116 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:28,263 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:28,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175421684] [2020-01-16 17:55:28,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:28,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:28,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890530036] [2020-01-16 17:55:28,274 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:28,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:28,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:28,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:28,275 INFO L87 Difference]: Start difference. First operand 6206 states and 34092 transitions. Second operand 13 states. [2020-01-16 17:55:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:28,561 INFO L93 Difference]: Finished difference Result 11823 states and 58399 transitions. [2020-01-16 17:55:28,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:28,562 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:28,592 INFO L225 Difference]: With dead ends: 11823 [2020-01-16 17:55:28,592 INFO L226 Difference]: Without dead ends: 11805 [2020-01-16 17:55:28,592 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11805 states. [2020-01-16 17:55:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11805 to 6212. [2020-01-16 17:55:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:55:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34103 transitions. [2020-01-16 17:55:29,317 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34103 transitions. Word has length 34 [2020-01-16 17:55:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:29,317 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34103 transitions. [2020-01-16 17:55:29,317 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:29,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34103 transitions. [2020-01-16 17:55:29,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:29,328 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:29,328 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:29,329 INFO L426 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:29,329 INFO L82 PathProgramCache]: Analyzing trace with hash 525276724, now seen corresponding path program 102 times [2020-01-16 17:55:29,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:29,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439121795] [2020-01-16 17:55:29,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:29,997 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:55:30,146 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:30,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439121795] [2020-01-16 17:55:30,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:30,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:30,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892058614] [2020-01-16 17:55:30,157 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:30,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:30,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:30,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:30,158 INFO L87 Difference]: Start difference. First operand 6212 states and 34103 transitions. Second operand 13 states. [2020-01-16 17:55:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:30,484 INFO L93 Difference]: Finished difference Result 11827 states and 58401 transitions. [2020-01-16 17:55:30,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:30,484 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:30,513 INFO L225 Difference]: With dead ends: 11827 [2020-01-16 17:55:30,513 INFO L226 Difference]: Without dead ends: 11793 [2020-01-16 17:55:30,513 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11793 states. [2020-01-16 17:55:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11793 to 6200. [2020-01-16 17:55:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6200 states. [2020-01-16 17:55:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 34075 transitions. [2020-01-16 17:55:31,149 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 34075 transitions. Word has length 34 [2020-01-16 17:55:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:31,149 INFO L478 AbstractCegarLoop]: Abstraction has 6200 states and 34075 transitions. [2020-01-16 17:55:31,149 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 34075 transitions. [2020-01-16 17:55:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:31,160 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:31,160 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:31,160 INFO L426 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:31,161 INFO L82 PathProgramCache]: Analyzing trace with hash 2108656526, now seen corresponding path program 103 times [2020-01-16 17:55:31,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:31,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464613434] [2020-01-16 17:55:31,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:31,701 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-01-16 17:55:31,852 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:32,005 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:32,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464613434] [2020-01-16 17:55:32,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:32,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:32,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985245932] [2020-01-16 17:55:32,016 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:32,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:32,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:32,017 INFO L87 Difference]: Start difference. First operand 6200 states and 34075 transitions. Second operand 13 states. [2020-01-16 17:55:32,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:32,438 INFO L93 Difference]: Finished difference Result 11820 states and 58399 transitions. [2020-01-16 17:55:32,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:32,438 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:32,466 INFO L225 Difference]: With dead ends: 11820 [2020-01-16 17:55:32,466 INFO L226 Difference]: Without dead ends: 11801 [2020-01-16 17:55:32,467 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11801 states. [2020-01-16 17:55:33,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11801 to 6212. [2020-01-16 17:55:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:55:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34109 transitions. [2020-01-16 17:55:33,102 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34109 transitions. Word has length 34 [2020-01-16 17:55:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:33,102 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34109 transitions. [2020-01-16 17:55:33,102 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34109 transitions. [2020-01-16 17:55:33,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:33,113 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:33,113 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:33,113 INFO L426 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:33,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:33,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1577660108, now seen corresponding path program 104 times [2020-01-16 17:55:33,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:33,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991047466] [2020-01-16 17:55:33,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:33,651 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-01-16 17:55:33,793 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:33,944 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:33,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991047466] [2020-01-16 17:55:33,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:33,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:33,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018679202] [2020-01-16 17:55:33,956 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:33,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:33,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:33,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:33,957 INFO L87 Difference]: Start difference. First operand 6212 states and 34109 transitions. Second operand 13 states. [2020-01-16 17:55:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:34,387 INFO L93 Difference]: Finished difference Result 11819 states and 58391 transitions. [2020-01-16 17:55:34,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:34,387 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:34,415 INFO L225 Difference]: With dead ends: 11819 [2020-01-16 17:55:34,415 INFO L226 Difference]: Without dead ends: 11795 [2020-01-16 17:55:34,415 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11795 states. [2020-01-16 17:55:35,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11795 to 6206. [2020-01-16 17:55:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6206 states. [2020-01-16 17:55:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34092 transitions. [2020-01-16 17:55:35,124 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34092 transitions. Word has length 34 [2020-01-16 17:55:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:35,124 INFO L478 AbstractCegarLoop]: Abstraction has 6206 states and 34092 transitions. [2020-01-16 17:55:35,124 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34092 transitions. [2020-01-16 17:55:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:35,135 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:35,135 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:35,136 INFO L426 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:35,136 INFO L82 PathProgramCache]: Analyzing trace with hash -979439620, now seen corresponding path program 105 times [2020-01-16 17:55:35,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:35,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403053370] [2020-01-16 17:55:35,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:35,807 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:35,952 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:35,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403053370] [2020-01-16 17:55:35,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:35,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:35,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139555848] [2020-01-16 17:55:35,964 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:35,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:35,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:35,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:35,965 INFO L87 Difference]: Start difference. First operand 6206 states and 34092 transitions. Second operand 13 states. [2020-01-16 17:55:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:36,270 INFO L93 Difference]: Finished difference Result 11824 states and 58402 transitions. [2020-01-16 17:55:36,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:36,270 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:36,306 INFO L225 Difference]: With dead ends: 11824 [2020-01-16 17:55:36,306 INFO L226 Difference]: Without dead ends: 11805 [2020-01-16 17:55:36,306 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11805 states. [2020-01-16 17:55:36,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11805 to 6213. [2020-01-16 17:55:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:55:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34105 transitions. [2020-01-16 17:55:36,943 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34105 transitions. Word has length 34 [2020-01-16 17:55:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:36,944 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34105 transitions. [2020-01-16 17:55:36,944 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34105 transitions. [2020-01-16 17:55:36,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:36,955 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:36,955 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:36,955 INFO L426 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:36,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:36,955 INFO L82 PathProgramCache]: Analyzing trace with hash 436720688, now seen corresponding path program 106 times [2020-01-16 17:55:36,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:36,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708311851] [2020-01-16 17:55:36,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:37,628 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:37,776 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:37,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708311851] [2020-01-16 17:55:37,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:37,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:37,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661681773] [2020-01-16 17:55:37,787 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:37,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:37,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:37,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:37,788 INFO L87 Difference]: Start difference. First operand 6213 states and 34105 transitions. Second operand 13 states. [2020-01-16 17:55:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:38,113 INFO L93 Difference]: Finished difference Result 11826 states and 58399 transitions. [2020-01-16 17:55:38,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:38,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:38,142 INFO L225 Difference]: With dead ends: 11826 [2020-01-16 17:55:38,143 INFO L226 Difference]: Without dead ends: 11798 [2020-01-16 17:55:38,143 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11798 states. [2020-01-16 17:55:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11798 to 6206. [2020-01-16 17:55:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6206 states. [2020-01-16 17:55:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34086 transitions. [2020-01-16 17:55:38,774 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34086 transitions. Word has length 34 [2020-01-16 17:55:38,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:38,774 INFO L478 AbstractCegarLoop]: Abstraction has 6206 states and 34086 transitions. [2020-01-16 17:55:38,775 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:38,775 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34086 transitions. [2020-01-16 17:55:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:38,785 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:38,785 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:38,785 INFO L426 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:38,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:38,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1822736152, now seen corresponding path program 107 times [2020-01-16 17:55:38,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:38,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877686544] [2020-01-16 17:55:38,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:39,461 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:39,611 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:39,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:39,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877686544] [2020-01-16 17:55:39,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:39,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:39,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611520183] [2020-01-16 17:55:39,623 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:39,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:39,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:39,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:39,623 INFO L87 Difference]: Start difference. First operand 6206 states and 34086 transitions. Second operand 13 states. [2020-01-16 17:55:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:39,996 INFO L93 Difference]: Finished difference Result 11821 states and 58389 transitions. [2020-01-16 17:55:39,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:39,997 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:40,026 INFO L225 Difference]: With dead ends: 11821 [2020-01-16 17:55:40,026 INFO L226 Difference]: Without dead ends: 11803 [2020-01-16 17:55:40,026 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:40,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11803 states. [2020-01-16 17:55:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11803 to 6212. [2020-01-16 17:55:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:55:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34097 transitions. [2020-01-16 17:55:40,735 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34097 transitions. Word has length 34 [2020-01-16 17:55:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:40,735 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34097 transitions. [2020-01-16 17:55:40,735 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34097 transitions. [2020-01-16 17:55:40,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:40,746 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:40,746 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:40,746 INFO L426 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:40,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:40,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2125022026, now seen corresponding path program 108 times [2020-01-16 17:55:40,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:40,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584824661] [2020-01-16 17:55:40,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:41,419 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:41,570 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:41,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584824661] [2020-01-16 17:55:41,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:41,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:41,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120224449] [2020-01-16 17:55:41,581 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:41,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:41,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:41,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:41,582 INFO L87 Difference]: Start difference. First operand 6212 states and 34097 transitions. Second operand 13 states. [2020-01-16 17:55:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:41,988 INFO L93 Difference]: Finished difference Result 11824 states and 58389 transitions. [2020-01-16 17:55:41,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:41,988 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:42,021 INFO L225 Difference]: With dead ends: 11824 [2020-01-16 17:55:42,021 INFO L226 Difference]: Without dead ends: 11791 [2020-01-16 17:55:42,021 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11791 states. [2020-01-16 17:55:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11791 to 6200. [2020-01-16 17:55:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6200 states. [2020-01-16 17:55:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 34069 transitions. [2020-01-16 17:55:42,658 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 34069 transitions. Word has length 34 [2020-01-16 17:55:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:42,658 INFO L478 AbstractCegarLoop]: Abstraction has 6200 states and 34069 transitions. [2020-01-16 17:55:42,658 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 34069 transitions. [2020-01-16 17:55:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:42,669 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:42,669 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:42,669 INFO L426 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:42,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2098705422, now seen corresponding path program 109 times [2020-01-16 17:55:42,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:42,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775899670] [2020-01-16 17:55:42,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:43,347 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:43,493 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:43,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775899670] [2020-01-16 17:55:43,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:43,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:43,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175895358] [2020-01-16 17:55:43,505 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:43,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:43,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:43,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:43,505 INFO L87 Difference]: Start difference. First operand 6200 states and 34069 transitions. Second operand 13 states. [2020-01-16 17:55:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:43,857 INFO L93 Difference]: Finished difference Result 11834 states and 58428 transitions. [2020-01-16 17:55:43,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:43,857 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:43,887 INFO L225 Difference]: With dead ends: 11834 [2020-01-16 17:55:43,887 INFO L226 Difference]: Without dead ends: 11815 [2020-01-16 17:55:43,887 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11815 states. [2020-01-16 17:55:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11815 to 6214. [2020-01-16 17:55:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:55:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34109 transitions. [2020-01-16 17:55:44,521 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34109 transitions. Word has length 34 [2020-01-16 17:55:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:44,521 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34109 transitions. [2020-01-16 17:55:44,521 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34109 transitions. [2020-01-16 17:55:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:44,532 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:44,532 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:44,532 INFO L426 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:44,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1890242668, now seen corresponding path program 110 times [2020-01-16 17:55:44,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:44,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025644430] [2020-01-16 17:55:44,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:45,211 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:55:45,361 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:45,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025644430] [2020-01-16 17:55:45,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:45,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:45,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866391538] [2020-01-16 17:55:45,375 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:45,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:45,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:45,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:45,375 INFO L87 Difference]: Start difference. First operand 6214 states and 34109 transitions. Second operand 13 states. [2020-01-16 17:55:45,774 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-01-16 17:55:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:45,800 INFO L93 Difference]: Finished difference Result 11837 states and 58427 transitions. [2020-01-16 17:55:45,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:45,800 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:45,831 INFO L225 Difference]: With dead ends: 11837 [2020-01-16 17:55:45,831 INFO L226 Difference]: Without dead ends: 11808 [2020-01-16 17:55:45,831 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11808 states. [2020-01-16 17:55:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11808 to 6207. [2020-01-16 17:55:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6207 states. [2020-01-16 17:55:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 34089 transitions. [2020-01-16 17:55:46,468 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 34089 transitions. Word has length 34 [2020-01-16 17:55:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:46,468 INFO L478 AbstractCegarLoop]: Abstraction has 6207 states and 34089 transitions. [2020-01-16 17:55:46,468 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 34089 transitions. [2020-01-16 17:55:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:46,479 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:46,479 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:46,480 INFO L426 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:46,480 INFO L82 PathProgramCache]: Analyzing trace with hash -720644296, now seen corresponding path program 111 times [2020-01-16 17:55:46,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:46,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054405134] [2020-01-16 17:55:46,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:47,165 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:47,311 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:47,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054405134] [2020-01-16 17:55:47,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:47,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:47,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080131722] [2020-01-16 17:55:47,323 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:47,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:47,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:47,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:47,323 INFO L87 Difference]: Start difference. First operand 6207 states and 34089 transitions. Second operand 13 states. [2020-01-16 17:55:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:47,724 INFO L93 Difference]: Finished difference Result 11833 states and 58419 transitions. [2020-01-16 17:55:47,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:47,725 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:47,754 INFO L225 Difference]: With dead ends: 11833 [2020-01-16 17:55:47,754 INFO L226 Difference]: Without dead ends: 11814 [2020-01-16 17:55:47,754 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2020-01-16 17:55:48,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 6214. [2020-01-16 17:55:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:55:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34102 transitions. [2020-01-16 17:55:48,386 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34102 transitions. Word has length 34 [2020-01-16 17:55:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:48,387 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34102 transitions. [2020-01-16 17:55:48,387 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:48,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34102 transitions. [2020-01-16 17:55:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:48,398 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:48,398 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:48,398 INFO L426 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:48,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:48,398 INFO L82 PathProgramCache]: Analyzing trace with hash 695516012, now seen corresponding path program 112 times [2020-01-16 17:55:48,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:48,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135420063] [2020-01-16 17:55:48,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:49,065 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:49,219 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:49,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135420063] [2020-01-16 17:55:49,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:49,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:49,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897545171] [2020-01-16 17:55:49,230 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:49,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:49,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:49,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:49,231 INFO L87 Difference]: Start difference. First operand 6214 states and 34102 transitions. Second operand 13 states. [2020-01-16 17:55:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:49,640 INFO L93 Difference]: Finished difference Result 11835 states and 58416 transitions. [2020-01-16 17:55:49,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:49,641 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:49,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:49,670 INFO L225 Difference]: With dead ends: 11835 [2020-01-16 17:55:49,670 INFO L226 Difference]: Without dead ends: 11807 [2020-01-16 17:55:49,671 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:50,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11807 states. [2020-01-16 17:55:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11807 to 6207. [2020-01-16 17:55:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6207 states. [2020-01-16 17:55:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 34082 transitions. [2020-01-16 17:55:50,310 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 34082 transitions. Word has length 34 [2020-01-16 17:55:50,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:50,310 INFO L478 AbstractCegarLoop]: Abstraction has 6207 states and 34082 transitions. [2020-01-16 17:55:50,310 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 34082 transitions. [2020-01-16 17:55:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:50,321 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:50,321 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:50,321 INFO L426 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:50,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:50,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1453428040, now seen corresponding path program 113 times [2020-01-16 17:55:50,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:50,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611148242] [2020-01-16 17:55:50,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:50,906 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:55:51,053 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:55:51,203 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:51,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611148242] [2020-01-16 17:55:51,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:51,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:51,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336401103] [2020-01-16 17:55:51,214 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:51,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:51,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:51,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:51,214 INFO L87 Difference]: Start difference. First operand 6207 states and 34082 transitions. Second operand 13 states. [2020-01-16 17:55:51,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:51,635 INFO L93 Difference]: Finished difference Result 11841 states and 58430 transitions. [2020-01-16 17:55:51,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:51,635 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:51,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:51,665 INFO L225 Difference]: With dead ends: 11841 [2020-01-16 17:55:51,665 INFO L226 Difference]: Without dead ends: 11819 [2020-01-16 17:55:51,665 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:52,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11819 states. [2020-01-16 17:55:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11819 to 6216. [2020-01-16 17:55:52,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:55:52,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34099 transitions. [2020-01-16 17:55:52,299 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34099 transitions. Word has length 34 [2020-01-16 17:55:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:52,299 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34099 transitions. [2020-01-16 17:55:52,299 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34099 transitions. [2020-01-16 17:55:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:52,310 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:52,311 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:52,311 INFO L426 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:52,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:52,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1471862066, now seen corresponding path program 114 times [2020-01-16 17:55:52,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:52,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043528284] [2020-01-16 17:55:52,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:52,863 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:55:53,011 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:53,158 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:53,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043528284] [2020-01-16 17:55:53,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:53,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:53,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727043104] [2020-01-16 17:55:53,169 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:53,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:53,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:53,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:53,170 INFO L87 Difference]: Start difference. First operand 6216 states and 34099 transitions. Second operand 13 states. [2020-01-16 17:55:53,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:53,542 INFO L93 Difference]: Finished difference Result 11840 states and 58419 transitions. [2020-01-16 17:55:53,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:53,542 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:53,571 INFO L225 Difference]: With dead ends: 11840 [2020-01-16 17:55:53,571 INFO L226 Difference]: Without dead ends: 11803 [2020-01-16 17:55:53,572 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11803 states. [2020-01-16 17:55:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11803 to 6200. [2020-01-16 17:55:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6200 states. [2020-01-16 17:55:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 34063 transitions. [2020-01-16 17:55:54,207 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 34063 transitions. Word has length 34 [2020-01-16 17:55:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:54,208 INFO L478 AbstractCegarLoop]: Abstraction has 6200 states and 34063 transitions. [2020-01-16 17:55:54,208 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 34063 transitions. [2020-01-16 17:55:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:54,218 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:54,218 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:54,218 INFO L426 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:54,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1966170974, now seen corresponding path program 115 times [2020-01-16 17:55:54,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:54,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777965399] [2020-01-16 17:55:54,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:54,882 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:55:55,035 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:55,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777965399] [2020-01-16 17:55:55,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:55,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:55,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653908663] [2020-01-16 17:55:55,046 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:55,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:55,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:55,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:55,046 INFO L87 Difference]: Start difference. First operand 6200 states and 34063 transitions. Second operand 13 states. [2020-01-16 17:55:55,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:55,352 INFO L93 Difference]: Finished difference Result 11827 states and 58403 transitions. [2020-01-16 17:55:55,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:55,352 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:55,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:55,381 INFO L225 Difference]: With dead ends: 11827 [2020-01-16 17:55:55,381 INFO L226 Difference]: Without dead ends: 11809 [2020-01-16 17:55:55,381 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11809 states. [2020-01-16 17:55:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11809 to 6212. [2020-01-16 17:55:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:55:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34097 transitions. [2020-01-16 17:55:56,015 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34097 transitions. Word has length 34 [2020-01-16 17:55:56,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:56,016 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34097 transitions. [2020-01-16 17:55:56,016 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:56,016 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34097 transitions. [2020-01-16 17:55:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:56,026 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:56,027 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:56,027 INFO L426 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:56,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:56,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1436621616, now seen corresponding path program 116 times [2020-01-16 17:55:56,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:56,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158778596] [2020-01-16 17:55:56,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:56,736 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:55:56,884 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:55:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:56,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158778596] [2020-01-16 17:55:56,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:56,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:56,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319707572] [2020-01-16 17:55:56,895 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:56,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:56,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:56,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:56,895 INFO L87 Difference]: Start difference. First operand 6212 states and 34097 transitions. Second operand 13 states. [2020-01-16 17:55:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:57,232 INFO L93 Difference]: Finished difference Result 11831 states and 58405 transitions. [2020-01-16 17:55:57,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:57,233 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:57,262 INFO L225 Difference]: With dead ends: 11831 [2020-01-16 17:55:57,263 INFO L226 Difference]: Without dead ends: 11803 [2020-01-16 17:55:57,263 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:57,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11803 states. [2020-01-16 17:55:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11803 to 6206. [2020-01-16 17:55:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6206 states. [2020-01-16 17:55:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34080 transitions. [2020-01-16 17:55:57,904 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34080 transitions. Word has length 34 [2020-01-16 17:55:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:57,904 INFO L478 AbstractCegarLoop]: Abstraction has 6206 states and 34080 transitions. [2020-01-16 17:55:57,904 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34080 transitions. [2020-01-16 17:55:57,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:57,916 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:57,916 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:57,916 INFO L426 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:57,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:57,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1430941172, now seen corresponding path program 117 times [2020-01-16 17:55:57,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:57,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310264801] [2020-01-16 17:55:57,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:55:58,580 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:55:58,730 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:55:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:55:58,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310264801] [2020-01-16 17:55:58,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:55:58,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:55:58,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024951236] [2020-01-16 17:55:58,742 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:55:58,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:55:58,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:55:58,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:55:58,742 INFO L87 Difference]: Start difference. First operand 6206 states and 34080 transitions. Second operand 13 states. [2020-01-16 17:55:59,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:55:59,070 INFO L93 Difference]: Finished difference Result 11826 states and 58395 transitions. [2020-01-16 17:55:59,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:55:59,071 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:55:59,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:55:59,101 INFO L225 Difference]: With dead ends: 11826 [2020-01-16 17:55:59,101 INFO L226 Difference]: Without dead ends: 11808 [2020-01-16 17:55:59,101 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:55:59,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11808 states. [2020-01-16 17:55:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11808 to 6212. [2020-01-16 17:55:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:55:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34091 transitions. [2020-01-16 17:55:59,734 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34091 transitions. Word has length 34 [2020-01-16 17:55:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:55:59,734 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34091 transitions. [2020-01-16 17:55:59,734 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:55:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34091 transitions. [2020-01-16 17:55:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:55:59,745 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:55:59,745 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:55:59,745 INFO L426 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:55:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:55:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1733227046, now seen corresponding path program 118 times [2020-01-16 17:55:59,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:55:59,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061715872] [2020-01-16 17:55:59,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:55:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:00,412 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:56:00,561 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:56:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:00,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061715872] [2020-01-16 17:56:00,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:00,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:00,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776844664] [2020-01-16 17:56:00,573 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:00,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:00,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:00,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:00,574 INFO L87 Difference]: Start difference. First operand 6212 states and 34091 transitions. Second operand 13 states. [2020-01-16 17:56:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:00,869 INFO L93 Difference]: Finished difference Result 11829 states and 58395 transitions. [2020-01-16 17:56:00,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:00,869 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:00,898 INFO L225 Difference]: With dead ends: 11829 [2020-01-16 17:56:00,899 INFO L226 Difference]: Without dead ends: 11802 [2020-01-16 17:56:00,899 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11802 states. [2020-01-16 17:56:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11802 to 6206. [2020-01-16 17:56:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6206 states. [2020-01-16 17:56:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34074 transitions. [2020-01-16 17:56:01,535 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34074 transitions. Word has length 34 [2020-01-16 17:56:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:01,536 INFO L478 AbstractCegarLoop]: Abstraction has 6206 states and 34074 transitions. [2020-01-16 17:56:01,536 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34074 transitions. [2020-01-16 17:56:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:01,547 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:01,547 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:01,547 INFO L426 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:01,548 INFO L82 PathProgramCache]: Analyzing trace with hash -655694114, now seen corresponding path program 119 times [2020-01-16 17:56:01,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:01,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118060372] [2020-01-16 17:56:01,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:02,082 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:56:02,228 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:02,376 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:02,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118060372] [2020-01-16 17:56:02,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:02,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:02,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740786203] [2020-01-16 17:56:02,481 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:02,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:02,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:02,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:02,482 INFO L87 Difference]: Start difference. First operand 6206 states and 34074 transitions. Second operand 13 states. [2020-01-16 17:56:02,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:02,766 INFO L93 Difference]: Finished difference Result 11837 states and 58414 transitions. [2020-01-16 17:56:02,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:02,766 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:02,796 INFO L225 Difference]: With dead ends: 11837 [2020-01-16 17:56:02,796 INFO L226 Difference]: Without dead ends: 11815 [2020-01-16 17:56:02,796 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11815 states. [2020-01-16 17:56:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11815 to 6215. [2020-01-16 17:56:03,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:56:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34091 transitions. [2020-01-16 17:56:03,430 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34091 transitions. Word has length 34 [2020-01-16 17:56:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:03,430 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34091 transitions. [2020-01-16 17:56:03,430 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34091 transitions. [2020-01-16 17:56:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:03,441 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:03,442 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:03,442 INFO L426 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:03,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:03,442 INFO L82 PathProgramCache]: Analyzing trace with hash -674128140, now seen corresponding path program 120 times [2020-01-16 17:56:03,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:03,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725229140] [2020-01-16 17:56:03,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:03,985 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:56:04,132 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:56:04,274 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:56:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:04,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725229140] [2020-01-16 17:56:04,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:04,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:04,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491672362] [2020-01-16 17:56:04,285 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:04,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:04,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:04,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:04,286 INFO L87 Difference]: Start difference. First operand 6215 states and 34091 transitions. Second operand 13 states. [2020-01-16 17:56:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:04,633 INFO L93 Difference]: Finished difference Result 11836 states and 58403 transitions. [2020-01-16 17:56:04,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:04,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:04,663 INFO L225 Difference]: With dead ends: 11836 [2020-01-16 17:56:04,663 INFO L226 Difference]: Without dead ends: 11785 [2020-01-16 17:56:04,663 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:05,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11785 states. [2020-01-16 17:56:05,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11785 to 6185. [2020-01-16 17:56:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6185 states. [2020-01-16 17:56:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6185 states to 6185 states and 34029 transitions. [2020-01-16 17:56:05,299 INFO L78 Accepts]: Start accepts. Automaton has 6185 states and 34029 transitions. Word has length 34 [2020-01-16 17:56:05,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:05,300 INFO L478 AbstractCegarLoop]: Abstraction has 6185 states and 34029 transitions. [2020-01-16 17:56:05,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:05,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6185 states and 34029 transitions. [2020-01-16 17:56:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:05,311 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:05,311 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:05,311 INFO L426 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:05,311 INFO L82 PathProgramCache]: Analyzing trace with hash -107252240, now seen corresponding path program 121 times [2020-01-16 17:56:05,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:05,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492515550] [2020-01-16 17:56:05,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:05,885 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:56:06,041 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:56:06,189 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:56:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:06,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492515550] [2020-01-16 17:56:06,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:06,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:06,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841434553] [2020-01-16 17:56:06,202 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:06,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:06,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:06,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:06,203 INFO L87 Difference]: Start difference. First operand 6185 states and 34029 transitions. Second operand 13 states. [2020-01-16 17:56:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:06,497 INFO L93 Difference]: Finished difference Result 11918 states and 58698 transitions. [2020-01-16 17:56:06,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:06,498 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:06,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:06,526 INFO L225 Difference]: With dead ends: 11918 [2020-01-16 17:56:06,527 INFO L226 Difference]: Without dead ends: 11894 [2020-01-16 17:56:06,527 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2020-01-16 17:56:07,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 6228. [2020-01-16 17:56:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2020-01-16 17:56:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 34181 transitions. [2020-01-16 17:56:07,161 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 34181 transitions. Word has length 34 [2020-01-16 17:56:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:07,161 INFO L478 AbstractCegarLoop]: Abstraction has 6228 states and 34181 transitions. [2020-01-16 17:56:07,161 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 34181 transitions. [2020-01-16 17:56:07,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:07,172 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:07,172 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:07,172 INFO L426 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:07,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:07,172 INFO L82 PathProgramCache]: Analyzing trace with hash -743719094, now seen corresponding path program 122 times [2020-01-16 17:56:07,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:07,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926181447] [2020-01-16 17:56:07,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:07,745 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:56:07,889 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:08,133 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:08,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926181447] [2020-01-16 17:56:08,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:08,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:08,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245820894] [2020-01-16 17:56:08,145 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:08,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:08,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:08,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:08,146 INFO L87 Difference]: Start difference. First operand 6228 states and 34181 transitions. Second operand 13 states. [2020-01-16 17:56:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:08,463 INFO L93 Difference]: Finished difference Result 11916 states and 58684 transitions. [2020-01-16 17:56:08,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:08,463 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:08,493 INFO L225 Difference]: With dead ends: 11916 [2020-01-16 17:56:08,493 INFO L226 Difference]: Without dead ends: 11882 [2020-01-16 17:56:08,493 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:09,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11882 states. [2020-01-16 17:56:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11882 to 6216. [2020-01-16 17:56:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:56:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34151 transitions. [2020-01-16 17:56:09,134 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34151 transitions. Word has length 34 [2020-01-16 17:56:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:09,134 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34151 transitions. [2020-01-16 17:56:09,134 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34151 transitions. [2020-01-16 17:56:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:09,145 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:09,145 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:09,145 INFO L426 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:09,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:09,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1656002464, now seen corresponding path program 123 times [2020-01-16 17:56:09,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:09,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904900279] [2020-01-16 17:56:09,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:09,720 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:56:09,864 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-01-16 17:56:10,015 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:56:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:10,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904900279] [2020-01-16 17:56:10,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:10,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:10,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452133122] [2020-01-16 17:56:10,026 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:10,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:10,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:10,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:10,027 INFO L87 Difference]: Start difference. First operand 6216 states and 34151 transitions. Second operand 13 states. [2020-01-16 17:56:10,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:10,435 INFO L93 Difference]: Finished difference Result 11906 states and 58664 transitions. [2020-01-16 17:56:10,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:10,437 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:10,465 INFO L225 Difference]: With dead ends: 11906 [2020-01-16 17:56:10,466 INFO L226 Difference]: Without dead ends: 11887 [2020-01-16 17:56:10,466 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-01-16 17:56:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 6224. [2020-01-16 17:56:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6224 states. [2020-01-16 17:56:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 34166 transitions. [2020-01-16 17:56:11,100 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 34166 transitions. Word has length 34 [2020-01-16 17:56:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:11,101 INFO L478 AbstractCegarLoop]: Abstraction has 6224 states and 34166 transitions. [2020-01-16 17:56:11,101 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 34166 transitions. [2020-01-16 17:56:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:11,112 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:11,112 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:11,112 INFO L426 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:11,112 INFO L82 PathProgramCache]: Analyzing trace with hash 671066180, now seen corresponding path program 124 times [2020-01-16 17:56:11,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:11,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036201704] [2020-01-16 17:56:11,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:11,677 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:56:11,826 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:56:11,975 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:56:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:11,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036201704] [2020-01-16 17:56:11,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:11,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:11,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216298610] [2020-01-16 17:56:11,987 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:11,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:11,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:11,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:11,987 INFO L87 Difference]: Start difference. First operand 6224 states and 34166 transitions. Second operand 13 states. [2020-01-16 17:56:12,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:12,384 INFO L93 Difference]: Finished difference Result 11911 states and 58666 transitions. [2020-01-16 17:56:12,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:12,385 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:12,414 INFO L225 Difference]: With dead ends: 11911 [2020-01-16 17:56:12,414 INFO L226 Difference]: Without dead ends: 11879 [2020-01-16 17:56:12,414 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11879 states. [2020-01-16 17:56:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11879 to 6216. [2020-01-16 17:56:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:56:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34143 transitions. [2020-01-16 17:56:13,057 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34143 transitions. Word has length 34 [2020-01-16 17:56:13,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:13,057 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34143 transitions. [2020-01-16 17:56:13,057 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34143 transitions. [2020-01-16 17:56:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:13,068 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:13,068 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:13,068 INFO L426 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:13,068 INFO L82 PathProgramCache]: Analyzing trace with hash -894600826, now seen corresponding path program 125 times [2020-01-16 17:56:13,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:13,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826066959] [2020-01-16 17:56:13,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:13,629 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 17:56:13,869 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:56:14,013 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:14,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826066959] [2020-01-16 17:56:14,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:14,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:14,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197402914] [2020-01-16 17:56:14,025 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:14,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:14,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:14,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:14,025 INFO L87 Difference]: Start difference. First operand 6216 states and 34143 transitions. Second operand 13 states. [2020-01-16 17:56:14,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:14,343 INFO L93 Difference]: Finished difference Result 11903 states and 58651 transitions. [2020-01-16 17:56:14,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:14,344 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:14,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:14,373 INFO L225 Difference]: With dead ends: 11903 [2020-01-16 17:56:14,373 INFO L226 Difference]: Without dead ends: 11884 [2020-01-16 17:56:14,374 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11884 states. [2020-01-16 17:56:14,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11884 to 6223. [2020-01-16 17:56:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-01-16 17:56:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 34156 transitions. [2020-01-16 17:56:15,010 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 34156 transitions. Word has length 34 [2020-01-16 17:56:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:15,010 INFO L478 AbstractCegarLoop]: Abstraction has 6223 states and 34156 transitions. [2020-01-16 17:56:15,010 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 34156 transitions. [2020-01-16 17:56:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:15,021 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:15,021 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:15,021 INFO L426 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:15,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1103063580, now seen corresponding path program 126 times [2020-01-16 17:56:15,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:15,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025922102] [2020-01-16 17:56:15,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:15,741 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:15,892 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:15,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025922102] [2020-01-16 17:56:15,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:15,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:15,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387167524] [2020-01-16 17:56:15,903 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:15,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:15,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:15,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:15,904 INFO L87 Difference]: Start difference. First operand 6223 states and 34156 transitions. Second operand 13 states. [2020-01-16 17:56:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:16,272 INFO L93 Difference]: Finished difference Result 11906 states and 58650 transitions. [2020-01-16 17:56:16,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:16,273 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:16,306 INFO L225 Difference]: With dead ends: 11906 [2020-01-16 17:56:16,306 INFO L226 Difference]: Without dead ends: 11868 [2020-01-16 17:56:16,306 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11868 states. [2020-01-16 17:56:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11868 to 6207. [2020-01-16 17:56:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6207 states. [2020-01-16 17:56:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 34119 transitions. [2020-01-16 17:56:16,947 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 34119 transitions. Word has length 34 [2020-01-16 17:56:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:16,947 INFO L478 AbstractCegarLoop]: Abstraction has 6207 states and 34119 transitions. [2020-01-16 17:56:16,947 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 34119 transitions. [2020-01-16 17:56:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:16,958 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:16,958 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:16,958 INFO L426 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:16,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:16,958 INFO L82 PathProgramCache]: Analyzing trace with hash 214145790, now seen corresponding path program 127 times [2020-01-16 17:56:16,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:16,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856652884] [2020-01-16 17:56:16,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:17,532 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:56:17,680 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-01-16 17:56:17,838 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-01-16 17:56:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:17,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856652884] [2020-01-16 17:56:17,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:17,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:17,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204059247] [2020-01-16 17:56:17,851 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:17,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:17,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:17,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:17,852 INFO L87 Difference]: Start difference. First operand 6207 states and 34119 transitions. Second operand 13 states. [2020-01-16 17:56:18,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:18,118 INFO L93 Difference]: Finished difference Result 11927 states and 58714 transitions. [2020-01-16 17:56:18,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:18,119 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:18,147 INFO L225 Difference]: With dead ends: 11927 [2020-01-16 17:56:18,147 INFO L226 Difference]: Without dead ends: 11903 [2020-01-16 17:56:18,148 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:18,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11903 states. [2020-01-16 17:56:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11903 to 6231. [2020-01-16 17:56:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6231 states. [2020-01-16 17:56:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6231 states to 6231 states and 34181 transitions. [2020-01-16 17:56:18,786 INFO L78 Accepts]: Start accepts. Automaton has 6231 states and 34181 transitions. Word has length 34 [2020-01-16 17:56:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:18,786 INFO L478 AbstractCegarLoop]: Abstraction has 6231 states and 34181 transitions. [2020-01-16 17:56:18,786 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 6231 states and 34181 transitions. [2020-01-16 17:56:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:18,797 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:18,797 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:18,798 INFO L426 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:18,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:18,798 INFO L82 PathProgramCache]: Analyzing trace with hash -422321064, now seen corresponding path program 128 times [2020-01-16 17:56:18,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:18,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190193613] [2020-01-16 17:56:18,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:19,454 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 17:56:19,599 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:19,747 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:19,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190193613] [2020-01-16 17:56:19,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:19,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:19,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440066720] [2020-01-16 17:56:19,758 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:19,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:19,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:19,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:19,759 INFO L87 Difference]: Start difference. First operand 6231 states and 34181 transitions. Second operand 13 states. [2020-01-16 17:56:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:20,069 INFO L93 Difference]: Finished difference Result 11925 states and 58700 transitions. [2020-01-16 17:56:20,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:20,070 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:20,100 INFO L225 Difference]: With dead ends: 11925 [2020-01-16 17:56:20,100 INFO L226 Difference]: Without dead ends: 11891 [2020-01-16 17:56:20,100 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11891 states. [2020-01-16 17:56:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11891 to 6219. [2020-01-16 17:56:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:56:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34149 transitions. [2020-01-16 17:56:20,737 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34149 transitions. Word has length 34 [2020-01-16 17:56:20,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:20,737 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34149 transitions. [2020-01-16 17:56:20,737 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34149 transitions. [2020-01-16 17:56:20,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:20,748 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:20,748 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:20,748 INFO L426 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:20,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1142165220, now seen corresponding path program 129 times [2020-01-16 17:56:20,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:20,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782638555] [2020-01-16 17:56:20,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:21,324 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:56:21,472 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:56:21,622 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:56:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:21,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782638555] [2020-01-16 17:56:21,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:21,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:21,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254655549] [2020-01-16 17:56:21,633 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:21,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:21,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:21,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:21,633 INFO L87 Difference]: Start difference. First operand 6219 states and 34149 transitions. Second operand 13 states. [2020-01-16 17:56:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:22,013 INFO L93 Difference]: Finished difference Result 11924 states and 58697 transitions. [2020-01-16 17:56:22,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:22,014 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:22,044 INFO L225 Difference]: With dead ends: 11924 [2020-01-16 17:56:22,044 INFO L226 Difference]: Without dead ends: 11900 [2020-01-16 17:56:22,044 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11900 states. [2020-01-16 17:56:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11900 to 6229. [2020-01-16 17:56:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6229 states. [2020-01-16 17:56:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6229 states to 6229 states and 34167 transitions. [2020-01-16 17:56:22,678 INFO L78 Accepts]: Start accepts. Automaton has 6229 states and 34167 transitions. Word has length 34 [2020-01-16 17:56:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:22,678 INFO L478 AbstractCegarLoop]: Abstraction has 6229 states and 34167 transitions. [2020-01-16 17:56:22,678 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 6229 states and 34167 transitions. [2020-01-16 17:56:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:22,689 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:22,689 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:22,689 INFO L426 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash -555079724, now seen corresponding path program 130 times [2020-01-16 17:56:22,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:22,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499787977] [2020-01-16 17:56:22,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:23,254 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:56:23,400 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:56:23,550 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:56:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:23,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499787977] [2020-01-16 17:56:23,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:23,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:23,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327936612] [2020-01-16 17:56:23,562 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:23,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:23,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:23,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:23,563 INFO L87 Difference]: Start difference. First operand 6229 states and 34167 transitions. Second operand 13 states. [2020-01-16 17:56:23,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:23,891 INFO L93 Difference]: Finished difference Result 11921 states and 58682 transitions. [2020-01-16 17:56:23,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:23,891 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:23,920 INFO L225 Difference]: With dead ends: 11921 [2020-01-16 17:56:23,921 INFO L226 Difference]: Without dead ends: 11890 [2020-01-16 17:56:23,921 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11890 states. [2020-01-16 17:56:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11890 to 6219. [2020-01-16 17:56:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:56:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34139 transitions. [2020-01-16 17:56:24,558 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34139 transitions. Word has length 34 [2020-01-16 17:56:24,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:24,558 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34139 transitions. [2020-01-16 17:56:24,558 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:24,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34139 transitions. [2020-01-16 17:56:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:24,569 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:24,569 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:24,569 INFO L426 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:24,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2044904924, now seen corresponding path program 131 times [2020-01-16 17:56:24,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:24,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88787470] [2020-01-16 17:56:24,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:25,236 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:56:25,382 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:25,535 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:25,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88787470] [2020-01-16 17:56:25,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:25,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:25,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290888794] [2020-01-16 17:56:25,547 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:25,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:25,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:25,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:25,547 INFO L87 Difference]: Start difference. First operand 6219 states and 34139 transitions. Second operand 13 states. [2020-01-16 17:56:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:25,950 INFO L93 Difference]: Finished difference Result 11919 states and 58679 transitions. [2020-01-16 17:56:25,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:25,950 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:25,980 INFO L225 Difference]: With dead ends: 11919 [2020-01-16 17:56:25,980 INFO L226 Difference]: Without dead ends: 11897 [2020-01-16 17:56:25,980 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11897 states. [2020-01-16 17:56:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11897 to 6228. [2020-01-16 17:56:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2020-01-16 17:56:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 34156 transitions. [2020-01-16 17:56:26,630 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 34156 transitions. Word has length 34 [2020-01-16 17:56:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:26,630 INFO L478 AbstractCegarLoop]: Abstraction has 6228 states and 34156 transitions. [2020-01-16 17:56:26,630 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 34156 transitions. [2020-01-16 17:56:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:26,641 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:26,641 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:26,641 INFO L426 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:26,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1189284282, now seen corresponding path program 132 times [2020-01-16 17:56:26,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:26,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046115057] [2020-01-16 17:56:26,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:27,198 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:56:27,345 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:56:27,494 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:56:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:27,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046115057] [2020-01-16 17:56:27,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:27,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:27,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547048724] [2020-01-16 17:56:27,506 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:27,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:27,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:27,507 INFO L87 Difference]: Start difference. First operand 6228 states and 34156 transitions. Second operand 13 states. [2020-01-16 17:56:27,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:27,830 INFO L93 Difference]: Finished difference Result 11918 states and 58668 transitions. [2020-01-16 17:56:27,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:27,830 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:27,859 INFO L225 Difference]: With dead ends: 11918 [2020-01-16 17:56:27,859 INFO L226 Difference]: Without dead ends: 11876 [2020-01-16 17:56:27,859 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:28,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11876 states. [2020-01-16 17:56:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11876 to 6207. [2020-01-16 17:56:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6207 states. [2020-01-16 17:56:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 34109 transitions. [2020-01-16 17:56:28,499 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 34109 transitions. Word has length 34 [2020-01-16 17:56:28,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:28,499 INFO L478 AbstractCegarLoop]: Abstraction has 6207 states and 34109 transitions. [2020-01-16 17:56:28,499 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 34109 transitions. [2020-01-16 17:56:28,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:28,510 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:28,510 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:28,510 INFO L426 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash 359833722, now seen corresponding path program 133 times [2020-01-16 17:56:28,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:28,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173980332] [2020-01-16 17:56:28,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:29,087 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:56:29,228 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:29,375 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:56:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:29,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173980332] [2020-01-16 17:56:29,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:29,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:29,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194173515] [2020-01-16 17:56:29,386 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:29,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:29,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:29,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:29,387 INFO L87 Difference]: Start difference. First operand 6207 states and 34109 transitions. Second operand 13 states. [2020-01-16 17:56:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:29,766 INFO L93 Difference]: Finished difference Result 11902 states and 58646 transitions. [2020-01-16 17:56:29,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:29,766 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:29,796 INFO L225 Difference]: With dead ends: 11902 [2020-01-16 17:56:29,796 INFO L226 Difference]: Without dead ends: 11883 [2020-01-16 17:56:29,796 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11883 states. [2020-01-16 17:56:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11883 to 6223. [2020-01-16 17:56:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-01-16 17:56:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 34154 transitions. [2020-01-16 17:56:30,430 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 34154 transitions. Word has length 34 [2020-01-16 17:56:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:30,430 INFO L478 AbstractCegarLoop]: Abstraction has 6223 states and 34154 transitions. [2020-01-16 17:56:30,430 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 34154 transitions. [2020-01-16 17:56:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:30,441 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:30,441 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:30,441 INFO L426 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:30,441 INFO L82 PathProgramCache]: Analyzing trace with hash -625102562, now seen corresponding path program 134 times [2020-01-16 17:56:30,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:30,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727334166] [2020-01-16 17:56:30,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:30,969 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-01-16 17:56:31,096 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:56:31,245 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:56:31,396 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:56:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:31,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727334166] [2020-01-16 17:56:31,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:31,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:31,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484404690] [2020-01-16 17:56:31,407 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:31,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:31,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:31,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:31,407 INFO L87 Difference]: Start difference. First operand 6223 states and 34154 transitions. Second operand 13 states. [2020-01-16 17:56:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:31,809 INFO L93 Difference]: Finished difference Result 11907 states and 58648 transitions. [2020-01-16 17:56:31,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:31,810 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:31,838 INFO L225 Difference]: With dead ends: 11907 [2020-01-16 17:56:31,838 INFO L226 Difference]: Without dead ends: 11875 [2020-01-16 17:56:31,838 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11875 states. [2020-01-16 17:56:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11875 to 6215. [2020-01-16 17:56:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:56:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34131 transitions. [2020-01-16 17:56:32,473 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34131 transitions. Word has length 34 [2020-01-16 17:56:32,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:32,473 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34131 transitions. [2020-01-16 17:56:32,473 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:32,473 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34131 transitions. [2020-01-16 17:56:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:32,484 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:32,484 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:32,484 INFO L426 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:32,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:32,484 INFO L82 PathProgramCache]: Analyzing trace with hash -715151990, now seen corresponding path program 135 times [2020-01-16 17:56:32,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:32,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884356953] [2020-01-16 17:56:32,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:33,171 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:33,323 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:56:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:33,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884356953] [2020-01-16 17:56:33,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:33,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:33,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945053406] [2020-01-16 17:56:33,335 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:33,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:33,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:33,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:33,336 INFO L87 Difference]: Start difference. First operand 6215 states and 34131 transitions. Second operand 13 states. [2020-01-16 17:56:33,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:33,777 INFO L93 Difference]: Finished difference Result 11898 states and 58631 transitions. [2020-01-16 17:56:33,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:33,778 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:33,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:33,807 INFO L225 Difference]: With dead ends: 11898 [2020-01-16 17:56:33,807 INFO L226 Difference]: Without dead ends: 11879 [2020-01-16 17:56:33,808 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:34,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11879 states. [2020-01-16 17:56:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11879 to 6222. [2020-01-16 17:56:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-01-16 17:56:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 34144 transitions. [2020-01-16 17:56:34,442 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 34144 transitions. Word has length 34 [2020-01-16 17:56:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:34,443 INFO L478 AbstractCegarLoop]: Abstraction has 6222 states and 34144 transitions. [2020-01-16 17:56:34,443 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 34144 transitions. [2020-01-16 17:56:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:34,454 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:34,454 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:34,454 INFO L426 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash 701008318, now seen corresponding path program 136 times [2020-01-16 17:56:34,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:34,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860672231] [2020-01-16 17:56:34,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:35,004 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-01-16 17:56:35,149 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:56:35,302 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:56:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:35,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860672231] [2020-01-16 17:56:35,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:35,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:35,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386336790] [2020-01-16 17:56:35,314 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:35,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:35,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:35,314 INFO L87 Difference]: Start difference. First operand 6222 states and 34144 transitions. Second operand 13 states. [2020-01-16 17:56:35,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:35,807 INFO L93 Difference]: Finished difference Result 11900 states and 58628 transitions. [2020-01-16 17:56:35,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:35,807 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:35,835 INFO L225 Difference]: With dead ends: 11900 [2020-01-16 17:56:35,835 INFO L226 Difference]: Without dead ends: 11872 [2020-01-16 17:56:35,836 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11872 states. [2020-01-16 17:56:36,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11872 to 6215. [2020-01-16 17:56:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:56:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34124 transitions. [2020-01-16 17:56:36,469 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34124 transitions. Word has length 34 [2020-01-16 17:56:36,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:36,469 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34124 transitions. [2020-01-16 17:56:36,469 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:36,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34124 transitions. [2020-01-16 17:56:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:36,480 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:36,480 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:36,480 INFO L426 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:36,481 INFO L82 PathProgramCache]: Analyzing trace with hash 326194026, now seen corresponding path program 137 times [2020-01-16 17:56:36,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:36,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853037038] [2020-01-16 17:56:36,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:37,011 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-01-16 17:56:37,137 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:56:37,285 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:56:37,435 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:56:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:37,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853037038] [2020-01-16 17:56:37,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:37,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:37,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471288844] [2020-01-16 17:56:37,449 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:37,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:37,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:37,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:37,449 INFO L87 Difference]: Start difference. First operand 6215 states and 34124 transitions. Second operand 13 states. [2020-01-16 17:56:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:37,712 INFO L93 Difference]: Finished difference Result 11911 states and 58650 transitions. [2020-01-16 17:56:37,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:37,712 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:37,742 INFO L225 Difference]: With dead ends: 11911 [2020-01-16 17:56:37,742 INFO L226 Difference]: Without dead ends: 11887 [2020-01-16 17:56:37,742 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-01-16 17:56:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 6225. [2020-01-16 17:56:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6225 states. [2020-01-16 17:56:38,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 34142 transitions. [2020-01-16 17:56:38,382 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 34142 transitions. Word has length 34 [2020-01-16 17:56:38,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:38,382 INFO L478 AbstractCegarLoop]: Abstraction has 6225 states and 34142 transitions. [2020-01-16 17:56:38,382 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:38,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 34142 transitions. [2020-01-16 17:56:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:38,393 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:38,393 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:38,393 INFO L426 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:38,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:38,393 INFO L82 PathProgramCache]: Analyzing trace with hash -927021958, now seen corresponding path program 138 times [2020-01-16 17:56:38,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:38,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938553179] [2020-01-16 17:56:38,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:38,944 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:56:39,088 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:56:39,233 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:56:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:39,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938553179] [2020-01-16 17:56:39,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:39,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:39,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808464681] [2020-01-16 17:56:39,245 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:39,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:39,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:39,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:39,245 INFO L87 Difference]: Start difference. First operand 6225 states and 34142 transitions. Second operand 13 states. [2020-01-16 17:56:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:39,534 INFO L93 Difference]: Finished difference Result 11908 states and 58635 transitions. [2020-01-16 17:56:39,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:39,534 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:39,564 INFO L225 Difference]: With dead ends: 11908 [2020-01-16 17:56:39,564 INFO L226 Difference]: Without dead ends: 11869 [2020-01-16 17:56:39,564 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11869 states. [2020-01-16 17:56:40,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11869 to 6207. [2020-01-16 17:56:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6207 states. [2020-01-16 17:56:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 34101 transitions. [2020-01-16 17:56:40,199 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 34101 transitions. Word has length 34 [2020-01-16 17:56:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:40,200 INFO L478 AbstractCegarLoop]: Abstraction has 6207 states and 34101 transitions. [2020-01-16 17:56:40,200 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 34101 transitions. [2020-01-16 17:56:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:40,213 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:40,213 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:40,213 INFO L426 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:40,214 INFO L82 PathProgramCache]: Analyzing trace with hash 344907066, now seen corresponding path program 139 times [2020-01-16 17:56:40,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:40,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342700507] [2020-01-16 17:56:40,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:40,918 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:56:41,068 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:41,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342700507] [2020-01-16 17:56:41,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:41,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:41,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036305575] [2020-01-16 17:56:41,079 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:41,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:41,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:41,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:41,080 INFO L87 Difference]: Start difference. First operand 6207 states and 34101 transitions. Second operand 13 states. [2020-01-16 17:56:41,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:41,374 INFO L93 Difference]: Finished difference Result 11894 states and 58623 transitions. [2020-01-16 17:56:41,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:41,375 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:41,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:41,404 INFO L225 Difference]: With dead ends: 11894 [2020-01-16 17:56:41,404 INFO L226 Difference]: Without dead ends: 11875 [2020-01-16 17:56:41,404 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:41,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11875 states. [2020-01-16 17:56:42,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11875 to 6221. [2020-01-16 17:56:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:56:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34141 transitions. [2020-01-16 17:56:42,041 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34141 transitions. Word has length 34 [2020-01-16 17:56:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:42,041 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34141 transitions. [2020-01-16 17:56:42,042 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34141 transitions. [2020-01-16 17:56:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:42,052 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:42,053 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:42,053 INFO L426 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:42,053 INFO L82 PathProgramCache]: Analyzing trace with hash 136444312, now seen corresponding path program 140 times [2020-01-16 17:56:42,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:42,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157527226] [2020-01-16 17:56:42,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:42,706 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 17:56:42,849 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:42,994 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:43,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157527226] [2020-01-16 17:56:43,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:43,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:43,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235577093] [2020-01-16 17:56:43,005 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:43,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:43,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:43,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:43,005 INFO L87 Difference]: Start difference. First operand 6221 states and 34141 transitions. Second operand 13 states. [2020-01-16 17:56:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:43,305 INFO L93 Difference]: Finished difference Result 11897 states and 58622 transitions. [2020-01-16 17:56:43,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:43,305 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:43,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:43,335 INFO L225 Difference]: With dead ends: 11897 [2020-01-16 17:56:43,335 INFO L226 Difference]: Without dead ends: 11868 [2020-01-16 17:56:43,335 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11868 states. [2020-01-16 17:56:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11868 to 6214. [2020-01-16 17:56:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:56:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34121 transitions. [2020-01-16 17:56:43,972 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34121 transitions. Word has length 34 [2020-01-16 17:56:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:43,972 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34121 transitions. [2020-01-16 17:56:43,972 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34121 transitions. [2020-01-16 17:56:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:43,983 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:43,983 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:43,984 INFO L426 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:43,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1820524644, now seen corresponding path program 141 times [2020-01-16 17:56:43,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:43,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792594917] [2020-01-16 17:56:43,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:44,674 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:56:44,825 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:56:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:44,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792594917] [2020-01-16 17:56:44,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:44,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:44,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665052362] [2020-01-16 17:56:44,837 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:44,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:44,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:44,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:44,838 INFO L87 Difference]: Start difference. First operand 6214 states and 34121 transitions. Second operand 13 states. [2020-01-16 17:56:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:45,202 INFO L93 Difference]: Finished difference Result 11893 states and 58614 transitions. [2020-01-16 17:56:45,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:45,203 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:45,232 INFO L225 Difference]: With dead ends: 11893 [2020-01-16 17:56:45,232 INFO L226 Difference]: Without dead ends: 11874 [2020-01-16 17:56:45,233 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:45,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11874 states. [2020-01-16 17:56:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11874 to 6221. [2020-01-16 17:56:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:56:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34134 transitions. [2020-01-16 17:56:45,871 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34134 transitions. Word has length 34 [2020-01-16 17:56:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:45,871 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34134 transitions. [2020-01-16 17:56:45,871 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34134 transitions. [2020-01-16 17:56:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:45,882 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:45,882 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:45,882 INFO L426 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:45,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1058282344, now seen corresponding path program 142 times [2020-01-16 17:56:45,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:45,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259750817] [2020-01-16 17:56:45,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:46,578 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:56:46,728 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:56:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:46,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259750817] [2020-01-16 17:56:46,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:46,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:46,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067077069] [2020-01-16 17:56:46,740 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:46,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:46,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:46,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:46,740 INFO L87 Difference]: Start difference. First operand 6221 states and 34134 transitions. Second operand 13 states. [2020-01-16 17:56:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:47,102 INFO L93 Difference]: Finished difference Result 11895 states and 58611 transitions. [2020-01-16 17:56:47,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:47,103 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:47,132 INFO L225 Difference]: With dead ends: 11895 [2020-01-16 17:56:47,132 INFO L226 Difference]: Without dead ends: 11867 [2020-01-16 17:56:47,132 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:47,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2020-01-16 17:56:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 6214. [2020-01-16 17:56:47,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:56:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34114 transitions. [2020-01-16 17:56:47,764 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34114 transitions. Word has length 34 [2020-01-16 17:56:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:47,764 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34114 transitions. [2020-01-16 17:56:47,764 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:47,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34114 transitions. [2020-01-16 17:56:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:47,775 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:47,775 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:47,775 INFO L426 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:47,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:47,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1087740900, now seen corresponding path program 143 times [2020-01-16 17:56:47,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:47,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062788953] [2020-01-16 17:56:47,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:48,570 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:48,723 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:48,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062788953] [2020-01-16 17:56:48,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:48,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:48,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975568042] [2020-01-16 17:56:48,735 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:48,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:48,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:48,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:48,735 INFO L87 Difference]: Start difference. First operand 6214 states and 34114 transitions. Second operand 13 states. [2020-01-16 17:56:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:49,127 INFO L93 Difference]: Finished difference Result 11901 states and 58625 transitions. [2020-01-16 17:56:49,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:49,128 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:49,159 INFO L225 Difference]: With dead ends: 11901 [2020-01-16 17:56:49,159 INFO L226 Difference]: Without dead ends: 11879 [2020-01-16 17:56:49,159 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11879 states. [2020-01-16 17:56:49,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11879 to 6223. [2020-01-16 17:56:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-01-16 17:56:49,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 34131 transitions. [2020-01-16 17:56:49,794 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 34131 transitions. Word has length 34 [2020-01-16 17:56:49,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:49,794 INFO L478 AbstractCegarLoop]: Abstraction has 6223 states and 34131 transitions. [2020-01-16 17:56:49,794 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 34131 transitions. [2020-01-16 17:56:49,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:49,805 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:49,805 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:49,805 INFO L426 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:49,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1069306874, now seen corresponding path program 144 times [2020-01-16 17:56:49,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:49,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30084189] [2020-01-16 17:56:49,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:50,352 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:56:50,498 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:56:50,649 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:56:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:50,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30084189] [2020-01-16 17:56:50,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:50,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:50,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419337009] [2020-01-16 17:56:50,660 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:50,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:50,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:50,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:50,661 INFO L87 Difference]: Start difference. First operand 6223 states and 34131 transitions. Second operand 13 states. [2020-01-16 17:56:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:50,968 INFO L93 Difference]: Finished difference Result 11900 states and 58614 transitions. [2020-01-16 17:56:50,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:50,968 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:50,998 INFO L225 Difference]: With dead ends: 11900 [2020-01-16 17:56:50,998 INFO L226 Difference]: Without dead ends: 11853 [2020-01-16 17:56:50,998 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2020-01-16 17:56:51,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 6197. [2020-01-16 17:56:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6197 states. [2020-01-16 17:56:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 34075 transitions. [2020-01-16 17:56:51,633 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 34075 transitions. Word has length 34 [2020-01-16 17:56:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:51,633 INFO L478 AbstractCegarLoop]: Abstraction has 6197 states and 34075 transitions. [2020-01-16 17:56:51,633 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 34075 transitions. [2020-01-16 17:56:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:51,644 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:51,644 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:51,644 INFO L426 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:51,644 INFO L82 PathProgramCache]: Analyzing trace with hash -990534336, now seen corresponding path program 145 times [2020-01-16 17:56:51,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:51,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76665622] [2020-01-16 17:56:51,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:52,208 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-01-16 17:56:52,360 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:56:52,511 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:52,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76665622] [2020-01-16 17:56:52,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:52,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:52,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269665627] [2020-01-16 17:56:52,522 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:52,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:52,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:52,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:52,523 INFO L87 Difference]: Start difference. First operand 6197 states and 34075 transitions. Second operand 13 states. [2020-01-16 17:56:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:52,910 INFO L93 Difference]: Finished difference Result 11912 states and 58673 transitions. [2020-01-16 17:56:52,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:52,911 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:52,940 INFO L225 Difference]: With dead ends: 11912 [2020-01-16 17:56:52,941 INFO L226 Difference]: Without dead ends: 11888 [2020-01-16 17:56:52,941 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11888 states. [2020-01-16 17:56:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11888 to 6227. [2020-01-16 17:56:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6227 states. [2020-01-16 17:56:53,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 34169 transitions. [2020-01-16 17:56:53,579 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 34169 transitions. Word has length 34 [2020-01-16 17:56:53,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:53,580 INFO L478 AbstractCegarLoop]: Abstraction has 6227 states and 34169 transitions. [2020-01-16 17:56:53,580 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:53,580 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 34169 transitions. [2020-01-16 17:56:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:53,591 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:53,591 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:53,591 INFO L426 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:53,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:53,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1627001190, now seen corresponding path program 146 times [2020-01-16 17:56:53,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:53,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94295651] [2020-01-16 17:56:53,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:54,152 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-01-16 17:56:54,295 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:56:54,450 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:56:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:54,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94295651] [2020-01-16 17:56:54,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:54,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:54,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695878898] [2020-01-16 17:56:54,556 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:54,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:54,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:54,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:54,556 INFO L87 Difference]: Start difference. First operand 6227 states and 34169 transitions. Second operand 13 states. [2020-01-16 17:56:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:54,876 INFO L93 Difference]: Finished difference Result 11910 states and 58659 transitions. [2020-01-16 17:56:54,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:54,876 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:54,906 INFO L225 Difference]: With dead ends: 11910 [2020-01-16 17:56:54,906 INFO L226 Difference]: Without dead ends: 11876 [2020-01-16 17:56:54,906 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11876 states. [2020-01-16 17:56:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11876 to 6215. [2020-01-16 17:56:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:56:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34139 transitions. [2020-01-16 17:56:55,541 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34139 transitions. Word has length 34 [2020-01-16 17:56:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:55,542 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34139 transitions. [2020-01-16 17:56:55,542 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:55,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34139 transitions. [2020-01-16 17:56:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:55,553 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:55,553 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:55,553 INFO L426 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:55,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:55,553 INFO L82 PathProgramCache]: Analyzing trace with hash 772720368, now seen corresponding path program 147 times [2020-01-16 17:56:55,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:55,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627592049] [2020-01-16 17:56:55,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:56,098 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 17:56:56,243 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:56:56,390 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:56,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627592049] [2020-01-16 17:56:56,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:56,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:56,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992850866] [2020-01-16 17:56:56,402 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:56,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:56,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:56,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:56,402 INFO L87 Difference]: Start difference. First operand 6215 states and 34139 transitions. Second operand 13 states. [2020-01-16 17:56:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:56,812 INFO L93 Difference]: Finished difference Result 11900 states and 58639 transitions. [2020-01-16 17:56:56,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:56,813 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:56,841 INFO L225 Difference]: With dead ends: 11900 [2020-01-16 17:56:56,841 INFO L226 Difference]: Without dead ends: 11881 [2020-01-16 17:56:56,842 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11881 states. [2020-01-16 17:56:57,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11881 to 6223. [2020-01-16 17:56:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-01-16 17:56:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 34154 transitions. [2020-01-16 17:56:57,479 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 34154 transitions. Word has length 34 [2020-01-16 17:56:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:57,479 INFO L478 AbstractCegarLoop]: Abstraction has 6223 states and 34154 transitions. [2020-01-16 17:56:57,479 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 34154 transitions. [2020-01-16 17:56:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:57,490 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:57,490 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:57,490 INFO L426 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:57,491 INFO L82 PathProgramCache]: Analyzing trace with hash -212215916, now seen corresponding path program 148 times [2020-01-16 17:56:57,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:57,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801813722] [2020-01-16 17:56:57,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:56:58,053 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 17:56:58,203 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:56:58,357 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:56:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:56:58,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801813722] [2020-01-16 17:56:58,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:56:58,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:56:58,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611333108] [2020-01-16 17:56:58,368 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:56:58,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:56:58,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:56:58,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:56:58,368 INFO L87 Difference]: Start difference. First operand 6223 states and 34154 transitions. Second operand 13 states. [2020-01-16 17:56:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:56:58,624 INFO L93 Difference]: Finished difference Result 11905 states and 58641 transitions. [2020-01-16 17:56:58,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:56:58,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:56:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:56:58,661 INFO L225 Difference]: With dead ends: 11905 [2020-01-16 17:56:58,661 INFO L226 Difference]: Without dead ends: 11873 [2020-01-16 17:56:58,661 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:56:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11873 states. [2020-01-16 17:56:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11873 to 6215. [2020-01-16 17:56:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 17:56:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34131 transitions. [2020-01-16 17:56:59,302 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34131 transitions. Word has length 34 [2020-01-16 17:56:59,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:56:59,302 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34131 transitions. [2020-01-16 17:56:59,302 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:56:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34131 transitions. [2020-01-16 17:56:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:56:59,313 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:56:59,313 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:56:59,313 INFO L426 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:56:59,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:56:59,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1777882922, now seen corresponding path program 149 times [2020-01-16 17:56:59,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:56:59,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926337616] [2020-01-16 17:56:59,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:56:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:00,005 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:57:00,153 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:00,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926337616] [2020-01-16 17:57:00,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:00,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:00,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475898260] [2020-01-16 17:57:00,165 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:00,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:00,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:00,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:00,166 INFO L87 Difference]: Start difference. First operand 6215 states and 34131 transitions. Second operand 13 states. [2020-01-16 17:57:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:00,575 INFO L93 Difference]: Finished difference Result 11897 states and 58626 transitions. [2020-01-16 17:57:00,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:00,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:00,606 INFO L225 Difference]: With dead ends: 11897 [2020-01-16 17:57:00,606 INFO L226 Difference]: Without dead ends: 11878 [2020-01-16 17:57:00,607 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11878 states. [2020-01-16 17:57:01,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11878 to 6222. [2020-01-16 17:57:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-01-16 17:57:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 34144 transitions. [2020-01-16 17:57:01,246 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 34144 transitions. Word has length 34 [2020-01-16 17:57:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:01,247 INFO L478 AbstractCegarLoop]: Abstraction has 6222 states and 34144 transitions. [2020-01-16 17:57:01,247 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:01,247 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 34144 transitions. [2020-01-16 17:57:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:01,257 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:01,257 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:01,257 INFO L426 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:01,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1986345676, now seen corresponding path program 150 times [2020-01-16 17:57:01,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:01,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384864757] [2020-01-16 17:57:01,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:01,978 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:57:02,128 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:02,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384864757] [2020-01-16 17:57:02,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:02,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:02,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058074904] [2020-01-16 17:57:02,140 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:02,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:02,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:02,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:02,141 INFO L87 Difference]: Start difference. First operand 6222 states and 34144 transitions. Second operand 13 states. [2020-01-16 17:57:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:02,462 INFO L93 Difference]: Finished difference Result 11900 states and 58625 transitions. [2020-01-16 17:57:02,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:02,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:02,490 INFO L225 Difference]: With dead ends: 11900 [2020-01-16 17:57:02,491 INFO L226 Difference]: Without dead ends: 11862 [2020-01-16 17:57:02,491 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2020-01-16 17:57:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 6206. [2020-01-16 17:57:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6206 states. [2020-01-16 17:57:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34107 transitions. [2020-01-16 17:57:03,122 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34107 transitions. Word has length 34 [2020-01-16 17:57:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:03,122 INFO L478 AbstractCegarLoop]: Abstraction has 6206 states and 34107 transitions. [2020-01-16 17:57:03,122 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:03,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34107 transitions. [2020-01-16 17:57:03,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:03,133 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:03,133 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:03,133 INFO L426 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:03,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:03,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2087042548, now seen corresponding path program 151 times [2020-01-16 17:57:03,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:03,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586461901] [2020-01-16 17:57:03,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:03,697 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-01-16 17:57:03,847 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-01-16 17:57:03,994 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:04,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586461901] [2020-01-16 17:57:04,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:04,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:04,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720667725] [2020-01-16 17:57:04,007 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:04,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:04,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:04,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:04,007 INFO L87 Difference]: Start difference. First operand 6206 states and 34107 transitions. Second operand 13 states. [2020-01-16 17:57:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:04,333 INFO L93 Difference]: Finished difference Result 11916 states and 58676 transitions. [2020-01-16 17:57:04,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:04,334 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:04,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:04,362 INFO L225 Difference]: With dead ends: 11916 [2020-01-16 17:57:04,362 INFO L226 Difference]: Without dead ends: 11892 [2020-01-16 17:57:04,362 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:04,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11892 states. [2020-01-16 17:57:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11892 to 6228. [2020-01-16 17:57:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2020-01-16 17:57:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 34164 transitions. [2020-01-16 17:57:05,003 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 34164 transitions. Word has length 34 [2020-01-16 17:57:05,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:05,003 INFO L478 AbstractCegarLoop]: Abstraction has 6228 states and 34164 transitions. [2020-01-16 17:57:05,003 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 34164 transitions. [2020-01-16 17:57:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:05,014 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:05,014 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:05,014 INFO L426 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:05,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1450575694, now seen corresponding path program 152 times [2020-01-16 17:57:05,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:05,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329261223] [2020-01-16 17:57:05,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:05,611 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-01-16 17:57:05,760 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:57:05,915 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:57:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:05,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329261223] [2020-01-16 17:57:05,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:05,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:05,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608435039] [2020-01-16 17:57:05,927 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:05,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:05,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:05,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:05,928 INFO L87 Difference]: Start difference. First operand 6228 states and 34164 transitions. Second operand 13 states. [2020-01-16 17:57:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:06,324 INFO L93 Difference]: Finished difference Result 11914 states and 58662 transitions. [2020-01-16 17:57:06,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:06,325 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:06,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:06,439 INFO L225 Difference]: With dead ends: 11914 [2020-01-16 17:57:06,439 INFO L226 Difference]: Without dead ends: 11880 [2020-01-16 17:57:06,439 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11880 states. [2020-01-16 17:57:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11880 to 6216. [2020-01-16 17:57:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:57:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34133 transitions. [2020-01-16 17:57:07,071 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34133 transitions. Word has length 34 [2020-01-16 17:57:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:07,071 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34133 transitions. [2020-01-16 17:57:07,071 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34133 transitions. [2020-01-16 17:57:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:07,082 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:07,082 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:07,082 INFO L426 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:07,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:07,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1733424308, now seen corresponding path program 153 times [2020-01-16 17:57:07,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:07,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785974787] [2020-01-16 17:57:07,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:07,789 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-01-16 17:57:07,943 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:07,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785974787] [2020-01-16 17:57:07,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:07,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:07,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259081708] [2020-01-16 17:57:07,954 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:07,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:07,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:07,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:07,954 INFO L87 Difference]: Start difference. First operand 6216 states and 34133 transitions. Second operand 13 states. [2020-01-16 17:57:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:08,247 INFO L93 Difference]: Finished difference Result 11911 states and 58655 transitions. [2020-01-16 17:57:08,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:08,247 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:08,276 INFO L225 Difference]: With dead ends: 11911 [2020-01-16 17:57:08,276 INFO L226 Difference]: Without dead ends: 11887 [2020-01-16 17:57:08,276 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:08,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-01-16 17:57:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 6225. [2020-01-16 17:57:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6225 states. [2020-01-16 17:57:08,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 34149 transitions. [2020-01-16 17:57:08,915 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 34149 transitions. Word has length 34 [2020-01-16 17:57:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:08,916 INFO L478 AbstractCegarLoop]: Abstraction has 6225 states and 34149 transitions. [2020-01-16 17:57:08,916 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:08,916 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 34149 transitions. [2020-01-16 17:57:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:08,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:08,927 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:08,927 INFO L426 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:08,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:08,927 INFO L82 PathProgramCache]: Analyzing trace with hash 672646218, now seen corresponding path program 154 times [2020-01-16 17:57:08,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:08,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509021656] [2020-01-16 17:57:08,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:09,643 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:57:09,796 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:09,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509021656] [2020-01-16 17:57:09,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:09,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:09,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733004787] [2020-01-16 17:57:09,808 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:09,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:09,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:09,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:09,808 INFO L87 Difference]: Start difference. First operand 6225 states and 34149 transitions. Second operand 13 states. [2020-01-16 17:57:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:10,188 INFO L93 Difference]: Finished difference Result 11907 states and 58639 transitions. [2020-01-16 17:57:10,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:10,189 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:10,219 INFO L225 Difference]: With dead ends: 11907 [2020-01-16 17:57:10,219 INFO L226 Difference]: Without dead ends: 11878 [2020-01-16 17:57:10,219 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11878 states. [2020-01-16 17:57:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11878 to 6216. [2020-01-16 17:57:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 17:57:10,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34124 transitions. [2020-01-16 17:57:10,869 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34124 transitions. Word has length 34 [2020-01-16 17:57:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:10,869 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34124 transitions. [2020-01-16 17:57:10,869 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34124 transitions. [2020-01-16 17:57:10,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:10,880 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:10,880 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:10,881 INFO L426 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:10,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:10,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1453645836, now seen corresponding path program 155 times [2020-01-16 17:57:10,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:10,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562599889] [2020-01-16 17:57:10,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:11,594 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:57:11,748 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:57:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:11,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562599889] [2020-01-16 17:57:11,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:11,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:11,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998351391] [2020-01-16 17:57:11,760 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:11,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:11,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:11,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:11,761 INFO L87 Difference]: Start difference. First operand 6216 states and 34124 transitions. Second operand 13 states. [2020-01-16 17:57:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:12,096 INFO L93 Difference]: Finished difference Result 11906 states and 58638 transitions. [2020-01-16 17:57:12,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:12,097 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:12,126 INFO L225 Difference]: With dead ends: 11906 [2020-01-16 17:57:12,127 INFO L226 Difference]: Without dead ends: 11884 [2020-01-16 17:57:12,127 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11884 states. [2020-01-16 17:57:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11884 to 6224. [2020-01-16 17:57:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6224 states. [2020-01-16 17:57:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 34139 transitions. [2020-01-16 17:57:12,867 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 34139 transitions. Word has length 34 [2020-01-16 17:57:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:12,868 INFO L478 AbstractCegarLoop]: Abstraction has 6224 states and 34139 transitions. [2020-01-16 17:57:12,868 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 34139 transitions. [2020-01-16 17:57:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:12,879 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:12,879 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:12,879 INFO L426 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:12,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:12,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1877957072, now seen corresponding path program 156 times [2020-01-16 17:57:12,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:12,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975695546] [2020-01-16 17:57:12,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:13,433 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-01-16 17:57:13,573 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:57:13,729 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:57:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:13,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975695546] [2020-01-16 17:57:13,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:13,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:13,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819517078] [2020-01-16 17:57:13,741 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:13,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:13,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:13,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:13,742 INFO L87 Difference]: Start difference. First operand 6224 states and 34139 transitions. Second operand 13 states. [2020-01-16 17:57:14,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:14,103 INFO L93 Difference]: Finished difference Result 11904 states and 58626 transitions. [2020-01-16 17:57:14,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:14,104 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:14,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:14,133 INFO L225 Difference]: With dead ends: 11904 [2020-01-16 17:57:14,133 INFO L226 Difference]: Without dead ends: 11866 [2020-01-16 17:57:14,133 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11866 states. [2020-01-16 17:57:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11866 to 6206. [2020-01-16 17:57:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6206 states. [2020-01-16 17:57:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34098 transitions. [2020-01-16 17:57:14,772 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34098 transitions. Word has length 34 [2020-01-16 17:57:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:14,772 INFO L478 AbstractCegarLoop]: Abstraction has 6206 states and 34098 transitions. [2020-01-16 17:57:14,772 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34098 transitions. [2020-01-16 17:57:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:14,783 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:14,783 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:14,783 INFO L426 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:14,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1599510480, now seen corresponding path program 157 times [2020-01-16 17:57:14,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:14,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407646113] [2020-01-16 17:57:14,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:15,360 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 17:57:15,506 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:57:15,656 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:57:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:15,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407646113] [2020-01-16 17:57:15,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:15,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:15,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455058048] [2020-01-16 17:57:15,668 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:15,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:15,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:15,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:15,669 INFO L87 Difference]: Start difference. First operand 6206 states and 34098 transitions. Second operand 13 states. [2020-01-16 17:57:16,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:16,157 INFO L93 Difference]: Finished difference Result 11894 states and 58617 transitions. [2020-01-16 17:57:16,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:16,157 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:16,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:16,186 INFO L225 Difference]: With dead ends: 11894 [2020-01-16 17:57:16,186 INFO L226 Difference]: Without dead ends: 11875 [2020-01-16 17:57:16,186 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:16,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11875 states. [2020-01-16 17:57:16,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11875 to 6222. [2020-01-16 17:57:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-01-16 17:57:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 34143 transitions. [2020-01-16 17:57:16,824 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 34143 transitions. Word has length 34 [2020-01-16 17:57:16,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:16,824 INFO L478 AbstractCegarLoop]: Abstraction has 6222 states and 34143 transitions. [2020-01-16 17:57:16,824 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 34143 transitions. [2020-01-16 17:57:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:16,835 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:16,835 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:16,835 INFO L426 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:16,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:16,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1710520532, now seen corresponding path program 158 times [2020-01-16 17:57:16,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:16,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770199952] [2020-01-16 17:57:16,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:17,393 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 17:57:17,548 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:57:17,699 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:57:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:17,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770199952] [2020-01-16 17:57:17,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:17,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:17,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445074225] [2020-01-16 17:57:17,711 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:17,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:17,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:17,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:17,711 INFO L87 Difference]: Start difference. First operand 6222 states and 34143 transitions. Second operand 13 states. [2020-01-16 17:57:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:17,954 INFO L93 Difference]: Finished difference Result 11899 states and 58619 transitions. [2020-01-16 17:57:17,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:17,955 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:17,983 INFO L225 Difference]: With dead ends: 11899 [2020-01-16 17:57:17,984 INFO L226 Difference]: Without dead ends: 11867 [2020-01-16 17:57:17,984 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:18,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2020-01-16 17:57:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 6214. [2020-01-16 17:57:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:57:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34120 transitions. [2020-01-16 17:57:18,703 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34120 transitions. Word has length 34 [2020-01-16 17:57:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:18,703 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34120 transitions. [2020-01-16 17:57:18,703 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34120 transitions. [2020-01-16 17:57:18,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:18,714 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:18,714 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:18,714 INFO L426 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash -123892902, now seen corresponding path program 159 times [2020-01-16 17:57:18,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:18,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24966029] [2020-01-16 17:57:18,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:19,263 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 17:57:19,409 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:57:19,559 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:57:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:19,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24966029] [2020-01-16 17:57:19,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:19,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:19,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397541569] [2020-01-16 17:57:19,571 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:19,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:19,571 INFO L87 Difference]: Start difference. First operand 6214 states and 34120 transitions. Second operand 13 states. [2020-01-16 17:57:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:19,884 INFO L93 Difference]: Finished difference Result 11889 states and 58600 transitions. [2020-01-16 17:57:19,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:19,885 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:19,913 INFO L225 Difference]: With dead ends: 11889 [2020-01-16 17:57:19,914 INFO L226 Difference]: Without dead ends: 11870 [2020-01-16 17:57:19,914 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11870 states. [2020-01-16 17:57:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11870 to 6221. [2020-01-16 17:57:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:57:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34133 transitions. [2020-01-16 17:57:20,550 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34133 transitions. Word has length 34 [2020-01-16 17:57:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:20,550 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34133 transitions. [2020-01-16 17:57:20,550 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34133 transitions. [2020-01-16 17:57:20,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:20,561 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:20,561 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:20,561 INFO L426 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:20,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1176487028, now seen corresponding path program 160 times [2020-01-16 17:57:20,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:20,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870358772] [2020-01-16 17:57:20,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:21,107 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 17:57:21,253 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:57:21,406 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:21,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870358772] [2020-01-16 17:57:21,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:21,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:21,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020632354] [2020-01-16 17:57:21,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:21,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:21,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:21,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:21,418 INFO L87 Difference]: Start difference. First operand 6221 states and 34133 transitions. Second operand 13 states. [2020-01-16 17:57:21,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:21,719 INFO L93 Difference]: Finished difference Result 11890 states and 58595 transitions. [2020-01-16 17:57:21,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:21,720 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:21,748 INFO L225 Difference]: With dead ends: 11890 [2020-01-16 17:57:21,749 INFO L226 Difference]: Without dead ends: 11863 [2020-01-16 17:57:21,749 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11863 states. [2020-01-16 17:57:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11863 to 6214. [2020-01-16 17:57:22,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:57:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34113 transitions. [2020-01-16 17:57:22,382 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34113 transitions. Word has length 34 [2020-01-16 17:57:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:22,382 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34113 transitions. [2020-01-16 17:57:22,383 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:22,383 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34113 transitions. [2020-01-16 17:57:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:22,393 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:22,393 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:22,393 INFO L426 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:22,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:22,394 INFO L82 PathProgramCache]: Analyzing trace with hash -927374598, now seen corresponding path program 161 times [2020-01-16 17:57:22,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:22,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198638303] [2020-01-16 17:57:22,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:22,939 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:57:23,090 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-01-16 17:57:23,244 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:23,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198638303] [2020-01-16 17:57:23,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:23,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:23,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102572575] [2020-01-16 17:57:23,255 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:23,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:23,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:23,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:23,256 INFO L87 Difference]: Start difference. First operand 6214 states and 34113 transitions. Second operand 13 states. [2020-01-16 17:57:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:23,511 INFO L93 Difference]: Finished difference Result 11901 states and 58616 transitions. [2020-01-16 17:57:23,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:23,512 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:23,542 INFO L225 Difference]: With dead ends: 11901 [2020-01-16 17:57:23,542 INFO L226 Difference]: Without dead ends: 11877 [2020-01-16 17:57:23,543 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2020-01-16 17:57:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 6223. [2020-01-16 17:57:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-01-16 17:57:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 34129 transitions. [2020-01-16 17:57:24,299 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 34129 transitions. Word has length 34 [2020-01-16 17:57:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:24,299 INFO L478 AbstractCegarLoop]: Abstraction has 6223 states and 34129 transitions. [2020-01-16 17:57:24,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 34129 transitions. [2020-01-16 17:57:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:24,310 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:24,311 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:24,311 INFO L426 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1675843802, now seen corresponding path program 162 times [2020-01-16 17:57:24,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:24,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436558745] [2020-01-16 17:57:24,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:25,009 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:57:25,160 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:25,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436558745] [2020-01-16 17:57:25,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:25,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:25,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763417216] [2020-01-16 17:57:25,172 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:25,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:25,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:25,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:25,172 INFO L87 Difference]: Start difference. First operand 6223 states and 34129 transitions. Second operand 13 states. [2020-01-16 17:57:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:25,498 INFO L93 Difference]: Finished difference Result 11897 states and 58600 transitions. [2020-01-16 17:57:25,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:25,499 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:25,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:25,527 INFO L225 Difference]: With dead ends: 11897 [2020-01-16 17:57:25,528 INFO L226 Difference]: Without dead ends: 11860 [2020-01-16 17:57:25,528 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11860 states. [2020-01-16 17:57:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11860 to 6206. [2020-01-16 17:57:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6206 states. [2020-01-16 17:57:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34090 transitions. [2020-01-16 17:57:26,186 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34090 transitions. Word has length 34 [2020-01-16 17:57:26,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:26,186 INFO L478 AbstractCegarLoop]: Abstraction has 6206 states and 34090 transitions. [2020-01-16 17:57:26,186 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:26,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34090 transitions. [2020-01-16 17:57:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:26,198 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:26,198 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:26,198 INFO L426 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:26,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:26,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1614437136, now seen corresponding path program 163 times [2020-01-16 17:57:26,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:26,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41322629] [2020-01-16 17:57:26,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:26,878 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:57:27,028 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:27,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41322629] [2020-01-16 17:57:27,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:27,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:27,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790707805] [2020-01-16 17:57:27,040 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:27,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:27,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:27,041 INFO L87 Difference]: Start difference. First operand 6206 states and 34090 transitions. Second operand 13 states. [2020-01-16 17:57:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:27,340 INFO L93 Difference]: Finished difference Result 11886 states and 58594 transitions. [2020-01-16 17:57:27,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:27,341 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:27,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:27,370 INFO L225 Difference]: With dead ends: 11886 [2020-01-16 17:57:27,371 INFO L226 Difference]: Without dead ends: 11867 [2020-01-16 17:57:27,371 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2020-01-16 17:57:28,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 6220. [2020-01-16 17:57:28,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:57:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34130 transitions. [2020-01-16 17:57:28,064 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34130 transitions. Word has length 34 [2020-01-16 17:57:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:28,064 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34130 transitions. [2020-01-16 17:57:28,064 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34130 transitions. [2020-01-16 17:57:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:28,075 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:28,075 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:28,075 INFO L426 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:28,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1822899890, now seen corresponding path program 164 times [2020-01-16 17:57:28,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:28,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635843045] [2020-01-16 17:57:28,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:28,757 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:57:28,911 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:28,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635843045] [2020-01-16 17:57:28,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:28,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:28,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587691790] [2020-01-16 17:57:28,923 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:28,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:28,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:28,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:28,923 INFO L87 Difference]: Start difference. First operand 6220 states and 34130 transitions. Second operand 13 states. [2020-01-16 17:57:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:29,231 INFO L93 Difference]: Finished difference Result 11889 states and 58593 transitions. [2020-01-16 17:57:29,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:29,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:29,260 INFO L225 Difference]: With dead ends: 11889 [2020-01-16 17:57:29,260 INFO L226 Difference]: Without dead ends: 11860 [2020-01-16 17:57:29,260 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11860 states. [2020-01-16 17:57:29,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11860 to 6213. [2020-01-16 17:57:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:57:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34110 transitions. [2020-01-16 17:57:29,897 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34110 transitions. Word has length 34 [2020-01-16 17:57:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:29,898 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34110 transitions. [2020-01-16 17:57:29,898 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34110 transitions. [2020-01-16 17:57:29,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:29,909 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:29,909 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:29,909 INFO L426 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:29,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1883183564, now seen corresponding path program 165 times [2020-01-16 17:57:29,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:29,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174968710] [2020-01-16 17:57:29,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:30,338 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-01-16 17:57:30,565 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:57:30,713 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:57:30,865 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:30,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174968710] [2020-01-16 17:57:30,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:30,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:30,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174175676] [2020-01-16 17:57:30,876 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:30,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:30,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:30,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:30,877 INFO L87 Difference]: Start difference. First operand 6213 states and 34110 transitions. Second operand 13 states. [2020-01-16 17:57:31,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:31,176 INFO L93 Difference]: Finished difference Result 11884 states and 58583 transitions. [2020-01-16 17:57:31,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:31,177 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:31,205 INFO L225 Difference]: With dead ends: 11884 [2020-01-16 17:57:31,205 INFO L226 Difference]: Without dead ends: 11865 [2020-01-16 17:57:31,206 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11865 states. [2020-01-16 17:57:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11865 to 6220. [2020-01-16 17:57:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:57:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34123 transitions. [2020-01-16 17:57:31,843 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34123 transitions. Word has length 34 [2020-01-16 17:57:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:31,843 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34123 transitions. [2020-01-16 17:57:31,843 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34123 transitions. [2020-01-16 17:57:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:31,854 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:31,854 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:31,854 INFO L426 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:31,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:31,854 INFO L82 PathProgramCache]: Analyzing trace with hash -582803634, now seen corresponding path program 166 times [2020-01-16 17:57:31,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:31,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954322842] [2020-01-16 17:57:31,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:32,405 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:57:32,551 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:57:32,703 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:57:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:32,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954322842] [2020-01-16 17:57:32,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:32,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:32,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011373379] [2020-01-16 17:57:32,715 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:32,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:32,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:32,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:32,715 INFO L87 Difference]: Start difference. First operand 6220 states and 34123 transitions. Second operand 13 states. [2020-01-16 17:57:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:33,015 INFO L93 Difference]: Finished difference Result 11885 states and 58578 transitions. [2020-01-16 17:57:33,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:33,016 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:33,046 INFO L225 Difference]: With dead ends: 11885 [2020-01-16 17:57:33,046 INFO L226 Difference]: Without dead ends: 11858 [2020-01-16 17:57:33,046 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11858 states. [2020-01-16 17:57:33,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11858 to 6213. [2020-01-16 17:57:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:57:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34103 transitions. [2020-01-16 17:57:33,680 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34103 transitions. Word has length 34 [2020-01-16 17:57:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:33,680 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34103 transitions. [2020-01-16 17:57:33,680 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34103 transitions. [2020-01-16 17:57:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:33,691 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:33,691 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:33,691 INFO L426 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:33,691 INFO L82 PathProgramCache]: Analyzing trace with hash -165827724, now seen corresponding path program 167 times [2020-01-16 17:57:33,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:33,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823749247] [2020-01-16 17:57:33,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:34,380 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:57:34,533 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:57:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:34,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823749247] [2020-01-16 17:57:34,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:34,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:34,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804351267] [2020-01-16 17:57:34,545 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:34,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:34,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:34,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:34,545 INFO L87 Difference]: Start difference. First operand 6213 states and 34103 transitions. Second operand 13 states. [2020-01-16 17:57:34,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:34,974 INFO L93 Difference]: Finished difference Result 11891 states and 58591 transitions. [2020-01-16 17:57:34,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:34,974 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:34,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:35,002 INFO L225 Difference]: With dead ends: 11891 [2020-01-16 17:57:35,003 INFO L226 Difference]: Without dead ends: 11869 [2020-01-16 17:57:35,003 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11869 states. [2020-01-16 17:57:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11869 to 6221. [2020-01-16 17:57:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:57:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34118 transitions. [2020-01-16 17:57:35,639 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34118 transitions. Word has length 34 [2020-01-16 17:57:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:35,640 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34118 transitions. [2020-01-16 17:57:35,640 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34118 transitions. [2020-01-16 17:57:35,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:35,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:35,651 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:35,651 INFO L426 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:35,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:35,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1544785584, now seen corresponding path program 168 times [2020-01-16 17:57:35,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:35,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248460196] [2020-01-16 17:57:35,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:36,198 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-01-16 17:57:36,346 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:57:36,597 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:57:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:36,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248460196] [2020-01-16 17:57:36,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:36,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:36,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395866624] [2020-01-16 17:57:36,609 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:36,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:36,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:36,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:36,609 INFO L87 Difference]: Start difference. First operand 6221 states and 34118 transitions. Second operand 13 states. [2020-01-16 17:57:36,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:36,934 INFO L93 Difference]: Finished difference Result 11889 states and 58579 transitions. [2020-01-16 17:57:36,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:36,934 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:36,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:36,963 INFO L225 Difference]: With dead ends: 11889 [2020-01-16 17:57:36,963 INFO L226 Difference]: Without dead ends: 11845 [2020-01-16 17:57:36,963 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:37,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11845 states. [2020-01-16 17:57:37,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11845 to 6197. [2020-01-16 17:57:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6197 states. [2020-01-16 17:57:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 34066 transitions. [2020-01-16 17:57:37,615 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 34066 transitions. Word has length 34 [2020-01-16 17:57:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:37,615 INFO L478 AbstractCegarLoop]: Abstraction has 6197 states and 34066 transitions. [2020-01-16 17:57:37,615 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 34066 transitions. [2020-01-16 17:57:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:37,625 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:37,625 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:37,625 INFO L426 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:37,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:37,626 INFO L82 PathProgramCache]: Analyzing trace with hash -834520410, now seen corresponding path program 169 times [2020-01-16 17:57:37,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:37,626 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258448809] [2020-01-16 17:57:37,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:38,199 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-01-16 17:57:38,347 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-01-16 17:57:38,501 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:38,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258448809] [2020-01-16 17:57:38,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:38,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:38,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546526066] [2020-01-16 17:57:38,513 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:38,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:38,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:38,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:38,513 INFO L87 Difference]: Start difference. First operand 6197 states and 34066 transitions. Second operand 13 states. [2020-01-16 17:57:38,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:38,781 INFO L93 Difference]: Finished difference Result 11931 states and 58720 transitions. [2020-01-16 17:57:38,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:38,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:38,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:38,811 INFO L225 Difference]: With dead ends: 11931 [2020-01-16 17:57:38,811 INFO L226 Difference]: Without dead ends: 11907 [2020-01-16 17:57:38,811 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11907 states. [2020-01-16 17:57:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11907 to 6231. [2020-01-16 17:57:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6231 states. [2020-01-16 17:57:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6231 states to 6231 states and 34172 transitions. [2020-01-16 17:57:39,450 INFO L78 Accepts]: Start accepts. Automaton has 6231 states and 34172 transitions. Word has length 34 [2020-01-16 17:57:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:39,450 INFO L478 AbstractCegarLoop]: Abstraction has 6231 states and 34172 transitions. [2020-01-16 17:57:39,450 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 6231 states and 34172 transitions. [2020-01-16 17:57:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:39,462 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:39,462 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:39,462 INFO L426 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:39,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1470987264, now seen corresponding path program 170 times [2020-01-16 17:57:39,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:39,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027896121] [2020-01-16 17:57:39,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:40,131 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-01-16 17:57:40,280 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:57:40,430 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:57:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:40,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027896121] [2020-01-16 17:57:40,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:40,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:40,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287174440] [2020-01-16 17:57:40,441 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:40,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:40,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:40,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:40,442 INFO L87 Difference]: Start difference. First operand 6231 states and 34172 transitions. Second operand 13 states. [2020-01-16 17:57:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:40,748 INFO L93 Difference]: Finished difference Result 11929 states and 58706 transitions. [2020-01-16 17:57:40,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:40,749 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:40,778 INFO L225 Difference]: With dead ends: 11929 [2020-01-16 17:57:40,779 INFO L226 Difference]: Without dead ends: 11895 [2020-01-16 17:57:40,779 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:41,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11895 states. [2020-01-16 17:57:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11895 to 6219. [2020-01-16 17:57:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:57:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34141 transitions. [2020-01-16 17:57:41,421 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34141 transitions. Word has length 34 [2020-01-16 17:57:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:41,421 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34141 transitions. [2020-01-16 17:57:41,421 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34141 transitions. [2020-01-16 17:57:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:41,432 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:41,432 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:41,432 INFO L426 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1188138650, now seen corresponding path program 171 times [2020-01-16 17:57:41,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:41,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134027894] [2020-01-16 17:57:41,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:42,016 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:57:42,171 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-01-16 17:57:42,326 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:42,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134027894] [2020-01-16 17:57:42,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:42,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:42,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849760419] [2020-01-16 17:57:42,338 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:42,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:42,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:42,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:42,339 INFO L87 Difference]: Start difference. First operand 6219 states and 34141 transitions. Second operand 13 states. [2020-01-16 17:57:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:42,609 INFO L93 Difference]: Finished difference Result 11926 states and 58699 transitions. [2020-01-16 17:57:42,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:42,610 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:42,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:42,727 INFO L225 Difference]: With dead ends: 11926 [2020-01-16 17:57:42,728 INFO L226 Difference]: Without dead ends: 11902 [2020-01-16 17:57:42,728 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11902 states. [2020-01-16 17:57:43,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11902 to 6228. [2020-01-16 17:57:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2020-01-16 17:57:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 34157 transitions. [2020-01-16 17:57:43,359 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 34157 transitions. Word has length 34 [2020-01-16 17:57:43,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:43,359 INFO L478 AbstractCegarLoop]: Abstraction has 6228 states and 34157 transitions. [2020-01-16 17:57:43,359 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:43,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 34157 transitions. [2020-01-16 17:57:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:43,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:43,371 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:43,371 INFO L426 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:43,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2046050556, now seen corresponding path program 172 times [2020-01-16 17:57:43,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:43,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270118127] [2020-01-16 17:57:43,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:43,934 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 17:57:44,079 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:57:44,227 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:44,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270118127] [2020-01-16 17:57:44,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:44,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:44,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592230208] [2020-01-16 17:57:44,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:44,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:44,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:44,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:44,239 INFO L87 Difference]: Start difference. First operand 6228 states and 34157 transitions. Second operand 13 states. [2020-01-16 17:57:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:44,553 INFO L93 Difference]: Finished difference Result 11922 states and 58683 transitions. [2020-01-16 17:57:44,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:44,553 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:44,583 INFO L225 Difference]: With dead ends: 11922 [2020-01-16 17:57:44,583 INFO L226 Difference]: Without dead ends: 11893 [2020-01-16 17:57:44,583 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11893 states. [2020-01-16 17:57:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11893 to 6219. [2020-01-16 17:57:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:57:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34132 transitions. [2020-01-16 17:57:45,220 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34132 transitions. Word has length 34 [2020-01-16 17:57:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:45,220 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34132 transitions. [2020-01-16 17:57:45,220 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34132 transitions. [2020-01-16 17:57:45,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:45,231 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:45,231 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:45,231 INFO L426 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:45,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:45,231 INFO L82 PathProgramCache]: Analyzing trace with hash -80241498, now seen corresponding path program 173 times [2020-01-16 17:57:45,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:45,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650524083] [2020-01-16 17:57:45,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:45,799 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-01-16 17:57:45,950 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:57:46,102 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:57:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:46,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650524083] [2020-01-16 17:57:46,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:46,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:46,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962551601] [2020-01-16 17:57:46,114 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:46,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:46,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:46,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:46,114 INFO L87 Difference]: Start difference. First operand 6219 states and 34132 transitions. Second operand 13 states. [2020-01-16 17:57:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:46,544 INFO L93 Difference]: Finished difference Result 11921 states and 58682 transitions. [2020-01-16 17:57:46,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:46,544 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:46,573 INFO L225 Difference]: With dead ends: 11921 [2020-01-16 17:57:46,573 INFO L226 Difference]: Without dead ends: 11899 [2020-01-16 17:57:46,573 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11899 states. [2020-01-16 17:57:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11899 to 6227. [2020-01-16 17:57:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6227 states. [2020-01-16 17:57:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 34147 transitions. [2020-01-16 17:57:47,208 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 34147 transitions. Word has length 34 [2020-01-16 17:57:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:47,208 INFO L478 AbstractCegarLoop]: Abstraction has 6227 states and 34147 transitions. [2020-01-16 17:57:47,208 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 34147 transitions. [2020-01-16 17:57:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:47,219 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:47,219 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:47,220 INFO L426 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:47,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:47,220 INFO L82 PathProgramCache]: Analyzing trace with hash -504552734, now seen corresponding path program 174 times [2020-01-16 17:57:47,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:47,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147812638] [2020-01-16 17:57:47,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:47,932 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:57:48,083 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:57:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:48,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147812638] [2020-01-16 17:57:48,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:48,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:48,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055860891] [2020-01-16 17:57:48,095 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:48,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:48,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:48,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:48,096 INFO L87 Difference]: Start difference. First operand 6227 states and 34147 transitions. Second operand 13 states. [2020-01-16 17:57:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:48,461 INFO L93 Difference]: Finished difference Result 11919 states and 58670 transitions. [2020-01-16 17:57:48,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:48,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:48,491 INFO L225 Difference]: With dead ends: 11919 [2020-01-16 17:57:48,491 INFO L226 Difference]: Without dead ends: 11881 [2020-01-16 17:57:48,491 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11881 states. [2020-01-16 17:57:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11881 to 6209. [2020-01-16 17:57:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 17:57:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34105 transitions. [2020-01-16 17:57:49,205 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34105 transitions. Word has length 34 [2020-01-16 17:57:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:49,205 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34105 transitions. [2020-01-16 17:57:49,205 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34105 transitions. [2020-01-16 17:57:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:49,216 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:49,216 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:49,216 INFO L426 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:49,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash 704268032, now seen corresponding path program 175 times [2020-01-16 17:57:49,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:49,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732384461] [2020-01-16 17:57:49,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:49,797 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-01-16 17:57:49,951 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-01-16 17:57:50,099 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-01-16 17:57:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:50,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732384461] [2020-01-16 17:57:50,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:50,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:50,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100957998] [2020-01-16 17:57:50,111 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:50,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:50,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:50,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:50,112 INFO L87 Difference]: Start difference. First operand 6209 states and 34105 transitions. Second operand 13 states. [2020-01-16 17:57:50,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:50,436 INFO L93 Difference]: Finished difference Result 11936 states and 58723 transitions. [2020-01-16 17:57:50,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:50,436 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:50,465 INFO L225 Difference]: With dead ends: 11936 [2020-01-16 17:57:50,465 INFO L226 Difference]: Without dead ends: 11912 [2020-01-16 17:57:50,465 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11912 states. [2020-01-16 17:57:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11912 to 6233. [2020-01-16 17:57:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6233 states. [2020-01-16 17:57:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 34167 transitions. [2020-01-16 17:57:51,100 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 34167 transitions. Word has length 34 [2020-01-16 17:57:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:51,100 INFO L478 AbstractCegarLoop]: Abstraction has 6233 states and 34167 transitions. [2020-01-16 17:57:51,100 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 34167 transitions. [2020-01-16 17:57:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:51,111 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:51,111 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:51,112 INFO L426 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:51,112 INFO L82 PathProgramCache]: Analyzing trace with hash 67801178, now seen corresponding path program 176 times [2020-01-16 17:57:51,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:51,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122479826] [2020-01-16 17:57:51,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:51,689 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-01-16 17:57:51,834 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:57:51,985 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2020-01-16 17:57:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:51,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122479826] [2020-01-16 17:57:51,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:51,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:51,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710713893] [2020-01-16 17:57:51,997 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:51,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:51,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:51,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:51,997 INFO L87 Difference]: Start difference. First operand 6233 states and 34167 transitions. Second operand 13 states. [2020-01-16 17:57:52,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:52,345 INFO L93 Difference]: Finished difference Result 11934 states and 58709 transitions. [2020-01-16 17:57:52,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:52,346 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:52,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:52,375 INFO L225 Difference]: With dead ends: 11934 [2020-01-16 17:57:52,375 INFO L226 Difference]: Without dead ends: 11900 [2020-01-16 17:57:52,375 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:52,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11900 states. [2020-01-16 17:57:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11900 to 6221. [2020-01-16 17:57:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:57:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34135 transitions. [2020-01-16 17:57:53,013 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34135 transitions. Word has length 34 [2020-01-16 17:57:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:53,013 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34135 transitions. [2020-01-16 17:57:53,013 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34135 transitions. [2020-01-16 17:57:53,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:53,024 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:53,024 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:53,024 INFO L426 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:53,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:53,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1632287462, now seen corresponding path program 177 times [2020-01-16 17:57:53,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:53,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390591250] [2020-01-16 17:57:53,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:53,598 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:57:53,745 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-01-16 17:57:53,900 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:53,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390591250] [2020-01-16 17:57:53,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:53,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:53,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070033195] [2020-01-16 17:57:53,911 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:53,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:53,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:53,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:53,912 INFO L87 Difference]: Start difference. First operand 6221 states and 34135 transitions. Second operand 13 states. [2020-01-16 17:57:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:54,275 INFO L93 Difference]: Finished difference Result 11933 states and 58706 transitions. [2020-01-16 17:57:54,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:54,276 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:54,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:54,305 INFO L225 Difference]: With dead ends: 11933 [2020-01-16 17:57:54,306 INFO L226 Difference]: Without dead ends: 11909 [2020-01-16 17:57:54,306 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:54,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11909 states. [2020-01-16 17:57:55,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11909 to 6231. [2020-01-16 17:57:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6231 states. [2020-01-16 17:57:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6231 states to 6231 states and 34153 transitions. [2020-01-16 17:57:55,051 INFO L78 Accepts]: Start accepts. Automaton has 6231 states and 34153 transitions. Word has length 34 [2020-01-16 17:57:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:55,051 INFO L478 AbstractCegarLoop]: Abstraction has 6231 states and 34153 transitions. [2020-01-16 17:57:55,051 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6231 states and 34153 transitions. [2020-01-16 17:57:55,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:55,062 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:55,062 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:55,062 INFO L426 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:55,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:55,063 INFO L82 PathProgramCache]: Analyzing trace with hash -64957482, now seen corresponding path program 178 times [2020-01-16 17:57:55,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:55,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513933614] [2020-01-16 17:57:55,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:55,627 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:57:55,769 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:57:55,922 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:57:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:55,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513933614] [2020-01-16 17:57:55,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:55,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:55,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979670539] [2020-01-16 17:57:55,933 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:55,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:55,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:55,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:55,934 INFO L87 Difference]: Start difference. First operand 6231 states and 34153 transitions. Second operand 13 states. [2020-01-16 17:57:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:56,331 INFO L93 Difference]: Finished difference Result 11930 states and 58691 transitions. [2020-01-16 17:57:56,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:56,331 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:56,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:56,360 INFO L225 Difference]: With dead ends: 11930 [2020-01-16 17:57:56,360 INFO L226 Difference]: Without dead ends: 11899 [2020-01-16 17:57:56,361 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11899 states. [2020-01-16 17:57:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11899 to 6221. [2020-01-16 17:57:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:57:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34125 transitions. [2020-01-16 17:57:56,997 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34125 transitions. Word has length 34 [2020-01-16 17:57:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:56,997 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34125 transitions. [2020-01-16 17:57:56,997 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34125 transitions. [2020-01-16 17:57:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:57,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:57,008 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:57,008 INFO L426 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:57,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1554782682, now seen corresponding path program 179 times [2020-01-16 17:57:57,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:57,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242282124] [2020-01-16 17:57:57,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:57,587 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:57:57,734 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:57:57,886 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2020-01-16 17:57:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:57,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242282124] [2020-01-16 17:57:57,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:57,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:57,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133927333] [2020-01-16 17:57:57,898 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:57,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:57,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:57,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:57,899 INFO L87 Difference]: Start difference. First operand 6221 states and 34125 transitions. Second operand 13 states. [2020-01-16 17:57:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:57:58,242 INFO L93 Difference]: Finished difference Result 11928 states and 58688 transitions. [2020-01-16 17:57:58,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:57:58,242 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:57:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:57:58,272 INFO L225 Difference]: With dead ends: 11928 [2020-01-16 17:57:58,272 INFO L226 Difference]: Without dead ends: 11906 [2020-01-16 17:57:58,272 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:57:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11906 states. [2020-01-16 17:57:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11906 to 6230. [2020-01-16 17:57:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2020-01-16 17:57:58,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 34142 transitions. [2020-01-16 17:57:58,905 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 34142 transitions. Word has length 34 [2020-01-16 17:57:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:57:58,905 INFO L478 AbstractCegarLoop]: Abstraction has 6230 states and 34142 transitions. [2020-01-16 17:57:58,905 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:57:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 34142 transitions. [2020-01-16 17:57:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:57:58,916 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:57:58,916 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:57:58,916 INFO L426 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:57:58,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:57:58,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1679406524, now seen corresponding path program 180 times [2020-01-16 17:57:58,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:57:58,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039423357] [2020-01-16 17:57:58,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:57:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:57:59,489 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:57:59,636 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:57:59,789 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-01-16 17:57:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:57:59,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039423357] [2020-01-16 17:57:59,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:57:59,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:57:59,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373699450] [2020-01-16 17:57:59,801 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:57:59,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:57:59,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:57:59,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:57:59,801 INFO L87 Difference]: Start difference. First operand 6230 states and 34142 transitions. Second operand 13 states. [2020-01-16 17:58:00,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:00,106 INFO L93 Difference]: Finished difference Result 11927 states and 58677 transitions. [2020-01-16 17:58:00,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:00,107 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:00,136 INFO L225 Difference]: With dead ends: 11927 [2020-01-16 17:58:00,136 INFO L226 Difference]: Without dead ends: 11885 [2020-01-16 17:58:00,136 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11885 states. [2020-01-16 17:58:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11885 to 6209. [2020-01-16 17:58:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 17:58:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34094 transitions. [2020-01-16 17:58:00,774 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34094 transitions. Word has length 34 [2020-01-16 17:58:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:00,774 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34094 transitions. [2020-01-16 17:58:00,774 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:00,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34094 transitions. [2020-01-16 17:58:00,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:00,785 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:00,785 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:00,785 INFO L426 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:00,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1810659904, now seen corresponding path program 181 times [2020-01-16 17:58:00,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:00,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493704772] [2020-01-16 17:58:00,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:01,324 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 17:58:01,452 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:58:01,601 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-01-16 17:58:01,755 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:01,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493704772] [2020-01-16 17:58:01,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:01,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:01,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990940425] [2020-01-16 17:58:01,767 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:01,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:01,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:01,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:01,767 INFO L87 Difference]: Start difference. First operand 6209 states and 34094 transitions. Second operand 13 states. [2020-01-16 17:58:02,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:02,022 INFO L93 Difference]: Finished difference Result 11922 states and 58680 transitions. [2020-01-16 17:58:02,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:02,023 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:02,052 INFO L225 Difference]: With dead ends: 11922 [2020-01-16 17:58:02,052 INFO L226 Difference]: Without dead ends: 11898 [2020-01-16 17:58:02,052 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11898 states. [2020-01-16 17:58:02,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11898 to 6227. [2020-01-16 17:58:02,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6227 states. [2020-01-16 17:58:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 34144 transitions. [2020-01-16 17:58:02,690 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 34144 transitions. Word has length 34 [2020-01-16 17:58:02,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:02,690 INFO L478 AbstractCegarLoop]: Abstraction has 6227 states and 34144 transitions. [2020-01-16 17:58:02,690 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 34144 transitions. [2020-01-16 17:58:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:02,701 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:02,701 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:02,702 INFO L426 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:02,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:02,702 INFO L82 PathProgramCache]: Analyzing trace with hash 749881814, now seen corresponding path program 182 times [2020-01-16 17:58:02,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:02,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740154947] [2020-01-16 17:58:02,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:03,278 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:58:03,425 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:58:03,568 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:03,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740154947] [2020-01-16 17:58:03,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:03,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:03,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915919126] [2020-01-16 17:58:03,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:03,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:03,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:03,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:03,581 INFO L87 Difference]: Start difference. First operand 6227 states and 34144 transitions. Second operand 13 states. [2020-01-16 17:58:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:03,887 INFO L93 Difference]: Finished difference Result 11918 states and 58664 transitions. [2020-01-16 17:58:03,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:03,888 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:03,917 INFO L225 Difference]: With dead ends: 11918 [2020-01-16 17:58:03,917 INFO L226 Difference]: Without dead ends: 11889 [2020-01-16 17:58:03,917 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:04,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11889 states. [2020-01-16 17:58:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11889 to 6218. [2020-01-16 17:58:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:58:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34119 transitions. [2020-01-16 17:58:04,559 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34119 transitions. Word has length 34 [2020-01-16 17:58:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:04,559 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34119 transitions. [2020-01-16 17:58:04,559 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34119 transitions. [2020-01-16 17:58:04,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:04,571 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:04,571 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:04,571 INFO L426 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:04,571 INFO L82 PathProgramCache]: Analyzing trace with hash -739943386, now seen corresponding path program 183 times [2020-01-16 17:58:04,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:04,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473767198] [2020-01-16 17:58:04,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:05,154 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:58:05,308 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-01-16 17:58:05,459 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:58:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:05,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473767198] [2020-01-16 17:58:05,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:05,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:05,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489402703] [2020-01-16 17:58:05,471 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:05,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:05,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:05,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:05,472 INFO L87 Difference]: Start difference. First operand 6218 states and 34119 transitions. Second operand 13 states. [2020-01-16 17:58:05,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:05,738 INFO L93 Difference]: Finished difference Result 11924 states and 58676 transitions. [2020-01-16 17:58:05,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:05,739 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:05,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:05,768 INFO L225 Difference]: With dead ends: 11924 [2020-01-16 17:58:05,769 INFO L226 Difference]: Without dead ends: 11900 [2020-01-16 17:58:05,769 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:06,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11900 states. [2020-01-16 17:58:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11900 to 6228. [2020-01-16 17:58:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2020-01-16 17:58:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 34137 transitions. [2020-01-16 17:58:06,404 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 34137 transitions. Word has length 34 [2020-01-16 17:58:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:06,404 INFO L478 AbstractCegarLoop]: Abstraction has 6228 states and 34137 transitions. [2020-01-16 17:58:06,404 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 34137 transitions. [2020-01-16 17:58:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:06,415 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:06,415 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:06,415 INFO L426 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:06,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1857778966, now seen corresponding path program 184 times [2020-01-16 17:58:06,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:06,415 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520642407] [2020-01-16 17:58:06,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:06,998 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:58:07,145 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:58:07,295 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:58:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:07,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520642407] [2020-01-16 17:58:07,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:07,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:07,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800242555] [2020-01-16 17:58:07,307 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:07,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:07,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:07,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:07,307 INFO L87 Difference]: Start difference. First operand 6228 states and 34137 transitions. Second operand 13 states. [2020-01-16 17:58:07,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:07,754 INFO L93 Difference]: Finished difference Result 11921 states and 58661 transitions. [2020-01-16 17:58:07,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:07,754 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:07,785 INFO L225 Difference]: With dead ends: 11921 [2020-01-16 17:58:07,785 INFO L226 Difference]: Without dead ends: 11890 [2020-01-16 17:58:07,786 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11890 states. [2020-01-16 17:58:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11890 to 6218. [2020-01-16 17:58:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:58:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34110 transitions. [2020-01-16 17:58:08,421 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34110 transitions. Word has length 34 [2020-01-16 17:58:08,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:08,421 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34110 transitions. [2020-01-16 17:58:08,421 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:08,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34110 transitions. [2020-01-16 17:58:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:08,432 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:08,432 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:08,432 INFO L426 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:08,432 INFO L82 PathProgramCache]: Analyzing trace with hash -325103898, now seen corresponding path program 185 times [2020-01-16 17:58:08,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:08,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252758800] [2020-01-16 17:58:08,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:09,008 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:58:09,154 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:58:09,303 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:09,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252758800] [2020-01-16 17:58:09,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:09,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:09,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194886278] [2020-01-16 17:58:09,315 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:09,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:09,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:09,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:09,316 INFO L87 Difference]: Start difference. First operand 6218 states and 34110 transitions. Second operand 13 states. [2020-01-16 17:58:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:09,644 INFO L93 Difference]: Finished difference Result 11914 states and 58648 transitions. [2020-01-16 17:58:09,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:09,644 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:09,674 INFO L225 Difference]: With dead ends: 11914 [2020-01-16 17:58:09,674 INFO L226 Difference]: Without dead ends: 11894 [2020-01-16 17:58:09,674 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2020-01-16 17:58:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 6226. [2020-01-16 17:58:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6226 states. [2020-01-16 17:58:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 34125 transitions. [2020-01-16 17:58:10,308 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 34125 transitions. Word has length 34 [2020-01-16 17:58:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:10,308 INFO L478 AbstractCegarLoop]: Abstraction has 6226 states and 34125 transitions. [2020-01-16 17:58:10,308 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 34125 transitions. [2020-01-16 17:58:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:10,319 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:10,319 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:10,319 INFO L426 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:10,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:10,319 INFO L82 PathProgramCache]: Analyzing trace with hash -961570752, now seen corresponding path program 186 times [2020-01-16 17:58:10,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:10,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648212747] [2020-01-16 17:58:10,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:10,900 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:58:11,047 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:58:11,194 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:58:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:11,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648212747] [2020-01-16 17:58:11,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:11,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:11,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685888466] [2020-01-16 17:58:11,206 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:11,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:11,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:11,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:11,207 INFO L87 Difference]: Start difference. First operand 6226 states and 34125 transitions. Second operand 13 states. [2020-01-16 17:58:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:11,581 INFO L93 Difference]: Finished difference Result 11915 states and 58642 transitions. [2020-01-16 17:58:11,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:11,581 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:11,610 INFO L225 Difference]: With dead ends: 11915 [2020-01-16 17:58:11,610 INFO L226 Difference]: Without dead ends: 11877 [2020-01-16 17:58:11,610 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2020-01-16 17:58:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 6209. [2020-01-16 17:58:12,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 17:58:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34085 transitions. [2020-01-16 17:58:12,246 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34085 transitions. Word has length 34 [2020-01-16 17:58:12,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:12,246 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34085 transitions. [2020-01-16 17:58:12,246 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34085 transitions. [2020-01-16 17:58:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:12,257 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:12,257 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:12,257 INFO L426 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1159266394, now seen corresponding path program 187 times [2020-01-16 17:58:12,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:12,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627691525] [2020-01-16 17:58:12,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:12,975 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:58:13,124 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:13,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627691525] [2020-01-16 17:58:13,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:13,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:13,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19180437] [2020-01-16 17:58:13,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:13,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:13,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:13,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:13,136 INFO L87 Difference]: Start difference. First operand 6209 states and 34085 transitions. Second operand 13 states. [2020-01-16 17:58:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:13,433 INFO L93 Difference]: Finished difference Result 11912 states and 58653 transitions. [2020-01-16 17:58:13,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:13,434 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:13,463 INFO L225 Difference]: With dead ends: 11912 [2020-01-16 17:58:13,463 INFO L226 Difference]: Without dead ends: 11890 [2020-01-16 17:58:13,463 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11890 states. [2020-01-16 17:58:14,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11890 to 6225. [2020-01-16 17:58:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6225 states. [2020-01-16 17:58:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 34131 transitions. [2020-01-16 17:58:14,179 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 34131 transitions. Word has length 34 [2020-01-16 17:58:14,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:14,179 INFO L478 AbstractCegarLoop]: Abstraction has 6225 states and 34131 transitions. [2020-01-16 17:58:14,179 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 34131 transitions. [2020-01-16 17:58:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:14,190 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:14,190 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:14,190 INFO L426 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:14,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:14,191 INFO L82 PathProgramCache]: Analyzing trace with hash 734955158, now seen corresponding path program 188 times [2020-01-16 17:58:14,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:14,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613309840] [2020-01-16 17:58:14,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:14,761 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-01-16 17:58:14,903 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:58:15,053 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:15,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613309840] [2020-01-16 17:58:15,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:15,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:15,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675627758] [2020-01-16 17:58:15,065 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:15,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:15,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:15,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:15,066 INFO L87 Difference]: Start difference. First operand 6225 states and 34131 transitions. Second operand 13 states. [2020-01-16 17:58:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:15,417 INFO L93 Difference]: Finished difference Result 11910 states and 58641 transitions. [2020-01-16 17:58:15,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:15,417 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:15,447 INFO L225 Difference]: With dead ends: 11910 [2020-01-16 17:58:15,447 INFO L226 Difference]: Without dead ends: 11882 [2020-01-16 17:58:15,447 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:15,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11882 states. [2020-01-16 17:58:16,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11882 to 6217. [2020-01-16 17:58:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6217 states. [2020-01-16 17:58:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 34108 transitions. [2020-01-16 17:58:16,089 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 34108 transitions. Word has length 34 [2020-01-16 17:58:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:16,089 INFO L478 AbstractCegarLoop]: Abstraction has 6217 states and 34108 transitions. [2020-01-16 17:58:16,089 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 34108 transitions. [2020-01-16 17:58:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:16,100 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:16,101 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:16,101 INFO L426 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:16,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1391336896, now seen corresponding path program 189 times [2020-01-16 17:58:16,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:16,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668777033] [2020-01-16 17:58:16,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:16,671 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:58:16,814 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:58:16,960 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2020-01-16 17:58:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:16,971 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668777033] [2020-01-16 17:58:16,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:16,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:16,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163881554] [2020-01-16 17:58:16,972 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:16,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:16,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:16,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:16,972 INFO L87 Difference]: Start difference. First operand 6217 states and 34108 transitions. Second operand 13 states. [2020-01-16 17:58:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:17,296 INFO L93 Difference]: Finished difference Result 11914 states and 58650 transitions. [2020-01-16 17:58:17,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:17,296 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:17,326 INFO L225 Difference]: With dead ends: 11914 [2020-01-16 17:58:17,326 INFO L226 Difference]: Without dead ends: 11892 [2020-01-16 17:58:17,327 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11892 states. [2020-01-16 17:58:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11892 to 6226. [2020-01-16 17:58:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6226 states. [2020-01-16 17:58:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 34125 transitions. [2020-01-16 17:58:17,962 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 34125 transitions. Word has length 34 [2020-01-16 17:58:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:17,962 INFO L478 AbstractCegarLoop]: Abstraction has 6226 states and 34125 transitions. [2020-01-16 17:58:17,962 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 34125 transitions. [2020-01-16 17:58:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:17,973 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:17,973 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:17,973 INFO L426 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:17,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:17,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1842852310, now seen corresponding path program 190 times [2020-01-16 17:58:17,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:17,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375457903] [2020-01-16 17:58:17,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:18,544 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:58:18,685 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:58:18,836 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-01-16 17:58:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:18,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375457903] [2020-01-16 17:58:18,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:18,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:18,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964103060] [2020-01-16 17:58:18,848 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:18,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:18,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:18,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:18,848 INFO L87 Difference]: Start difference. First operand 6226 states and 34125 transitions. Second operand 13 states. [2020-01-16 17:58:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:19,174 INFO L93 Difference]: Finished difference Result 11913 states and 58639 transitions. [2020-01-16 17:58:19,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:19,175 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:19,205 INFO L225 Difference]: With dead ends: 11913 [2020-01-16 17:58:19,206 INFO L226 Difference]: Without dead ends: 11883 [2020-01-16 17:58:19,206 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:19,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11883 states. [2020-01-16 17:58:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11883 to 6217. [2020-01-16 17:58:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6217 states. [2020-01-16 17:58:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 34100 transitions. [2020-01-16 17:58:19,963 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 34100 transitions. Word has length 34 [2020-01-16 17:58:19,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:19,964 INFO L478 AbstractCegarLoop]: Abstraction has 6217 states and 34100 transitions. [2020-01-16 17:58:19,964 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 34100 transitions. [2020-01-16 17:58:19,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:19,975 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:19,975 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:19,975 INFO L426 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:19,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2084394560, now seen corresponding path program 191 times [2020-01-16 17:58:19,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:19,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568470304] [2020-01-16 17:58:19,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:20,541 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:58:20,688 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:58:20,835 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-01-16 17:58:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:20,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568470304] [2020-01-16 17:58:20,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:20,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:20,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527403932] [2020-01-16 17:58:20,846 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:20,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:20,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:20,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:20,847 INFO L87 Difference]: Start difference. First operand 6217 states and 34100 transitions. Second operand 13 states. [2020-01-16 17:58:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:21,169 INFO L93 Difference]: Finished difference Result 11909 states and 58631 transitions. [2020-01-16 17:58:21,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:21,170 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:21,199 INFO L225 Difference]: With dead ends: 11909 [2020-01-16 17:58:21,199 INFO L226 Difference]: Without dead ends: 11889 [2020-01-16 17:58:21,199 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11889 states. [2020-01-16 17:58:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11889 to 6225. [2020-01-16 17:58:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6225 states. [2020-01-16 17:58:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 34115 transitions. [2020-01-16 17:58:21,834 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 34115 transitions. Word has length 34 [2020-01-16 17:58:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:21,834 INFO L478 AbstractCegarLoop]: Abstraction has 6225 states and 34115 transitions. [2020-01-16 17:58:21,834 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 34115 transitions. [2020-01-16 17:58:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:21,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:21,845 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:21,845 INFO L426 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:21,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1574105882, now seen corresponding path program 192 times [2020-01-16 17:58:21,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:21,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661091472] [2020-01-16 17:58:21,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:22,413 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:58:22,558 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:58:22,712 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-01-16 17:58:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:22,724 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661091472] [2020-01-16 17:58:22,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:22,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:22,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559169638] [2020-01-16 17:58:22,724 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:22,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:22,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:22,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:22,725 INFO L87 Difference]: Start difference. First operand 6225 states and 34115 transitions. Second operand 13 states. [2020-01-16 17:58:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:23,040 INFO L93 Difference]: Finished difference Result 11910 states and 58625 transitions. [2020-01-16 17:58:23,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:23,041 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:23,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:23,070 INFO L225 Difference]: With dead ends: 11910 [2020-01-16 17:58:23,070 INFO L226 Difference]: Without dead ends: 11861 [2020-01-16 17:58:23,070 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:23,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11861 states. [2020-01-16 17:58:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11861 to 6197. [2020-01-16 17:58:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6197 states. [2020-01-16 17:58:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 34055 transitions. [2020-01-16 17:58:23,711 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 34055 transitions. Word has length 34 [2020-01-16 17:58:23,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:23,711 INFO L478 AbstractCegarLoop]: Abstraction has 6197 states and 34055 transitions. [2020-01-16 17:58:23,711 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:23,711 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 34055 transitions. [2020-01-16 17:58:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:23,722 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:23,722 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:23,722 INFO L426 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:23,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1168931478, now seen corresponding path program 193 times [2020-01-16 17:58:23,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:23,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772830290] [2020-01-16 17:58:23,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:24,287 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:58:24,434 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:58:24,588 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:58:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:24,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772830290] [2020-01-16 17:58:24,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:24,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:24,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617370739] [2020-01-16 17:58:24,599 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:24,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:24,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:24,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:24,600 INFO L87 Difference]: Start difference. First operand 6197 states and 34055 transitions. Second operand 13 states. [2020-01-16 17:58:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:24,913 INFO L93 Difference]: Finished difference Result 11888 states and 58602 transitions. [2020-01-16 17:58:24,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:24,914 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:24,943 INFO L225 Difference]: With dead ends: 11888 [2020-01-16 17:58:24,943 INFO L226 Difference]: Without dead ends: 11869 [2020-01-16 17:58:24,943 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11869 states. [2020-01-16 17:58:25,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11869 to 6221. [2020-01-16 17:58:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:58:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34138 transitions. [2020-01-16 17:58:25,578 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34138 transitions. Word has length 34 [2020-01-16 17:58:25,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:25,579 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34138 transitions. [2020-01-16 17:58:25,579 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34138 transitions. [2020-01-16 17:58:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:25,590 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:25,590 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:25,590 INFO L426 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:25,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:25,590 INFO L82 PathProgramCache]: Analyzing trace with hash 183995194, now seen corresponding path program 194 times [2020-01-16 17:58:25,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:25,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274252549] [2020-01-16 17:58:25,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:26,145 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:58:26,396 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-01-16 17:58:26,567 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:58:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:26,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274252549] [2020-01-16 17:58:26,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:26,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:26,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988011045] [2020-01-16 17:58:26,579 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:26,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:26,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:26,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:26,579 INFO L87 Difference]: Start difference. First operand 6221 states and 34138 transitions. Second operand 13 states. [2020-01-16 17:58:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:26,937 INFO L93 Difference]: Finished difference Result 11893 states and 58604 transitions. [2020-01-16 17:58:26,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:26,937 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:26,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:26,966 INFO L225 Difference]: With dead ends: 11893 [2020-01-16 17:58:26,966 INFO L226 Difference]: Without dead ends: 11861 [2020-01-16 17:58:26,966 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11861 states. [2020-01-16 17:58:27,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11861 to 6213. [2020-01-16 17:58:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:58:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34115 transitions. [2020-01-16 17:58:27,606 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34115 transitions. Word has length 34 [2020-01-16 17:58:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:27,606 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34115 transitions. [2020-01-16 17:58:27,606 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34115 transitions. [2020-01-16 17:58:27,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:27,617 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:27,617 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:27,617 INFO L426 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:27,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1650418240, now seen corresponding path program 195 times [2020-01-16 17:58:27,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:27,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243174973] [2020-01-16 17:58:27,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:28,187 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-01-16 17:58:28,331 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:58:28,483 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:58:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:28,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243174973] [2020-01-16 17:58:28,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:28,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:28,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512399142] [2020-01-16 17:58:28,495 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:28,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:28,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:28,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:28,495 INFO L87 Difference]: Start difference. First operand 6213 states and 34115 transitions. Second operand 13 states. [2020-01-16 17:58:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:28,887 INFO L93 Difference]: Finished difference Result 11883 states and 58585 transitions. [2020-01-16 17:58:28,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:28,887 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:28,916 INFO L225 Difference]: With dead ends: 11883 [2020-01-16 17:58:28,916 INFO L226 Difference]: Without dead ends: 11864 [2020-01-16 17:58:28,916 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11864 states. [2020-01-16 17:58:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11864 to 6220. [2020-01-16 17:58:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:58:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34128 transitions. [2020-01-16 17:58:29,550 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34128 transitions. Word has length 34 [2020-01-16 17:58:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:29,550 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34128 transitions. [2020-01-16 17:58:29,550 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34128 transitions. [2020-01-16 17:58:29,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:29,561 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:29,561 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:29,561 INFO L426 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:29,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:29,561 INFO L82 PathProgramCache]: Analyzing trace with hash -350038310, now seen corresponding path program 196 times [2020-01-16 17:58:29,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:29,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649676355] [2020-01-16 17:58:29,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:30,121 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-01-16 17:58:30,270 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:58:30,420 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:30,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649676355] [2020-01-16 17:58:30,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:30,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:30,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406924002] [2020-01-16 17:58:30,431 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:30,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:30,431 INFO L87 Difference]: Start difference. First operand 6220 states and 34128 transitions. Second operand 13 states. [2020-01-16 17:58:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:30,840 INFO L93 Difference]: Finished difference Result 11884 states and 58580 transitions. [2020-01-16 17:58:30,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:30,841 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:30,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:30,870 INFO L225 Difference]: With dead ends: 11884 [2020-01-16 17:58:30,870 INFO L226 Difference]: Without dead ends: 11857 [2020-01-16 17:58:30,870 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11857 states. [2020-01-16 17:58:31,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11857 to 6213. [2020-01-16 17:58:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:58:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34108 transitions. [2020-01-16 17:58:31,512 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34108 transitions. Word has length 34 [2020-01-16 17:58:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:31,512 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34108 transitions. [2020-01-16 17:58:31,512 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34108 transitions. [2020-01-16 17:58:31,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:31,523 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:31,523 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:31,523 INFO L426 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:31,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:31,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1841067360, now seen corresponding path program 197 times [2020-01-16 17:58:31,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:31,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93557101] [2020-01-16 17:58:31,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:32,089 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:58:32,248 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-01-16 17:58:32,400 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:32,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93557101] [2020-01-16 17:58:32,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:32,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:32,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921098796] [2020-01-16 17:58:32,411 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:32,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:32,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:32,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:32,412 INFO L87 Difference]: Start difference. First operand 6213 states and 34108 transitions. Second operand 13 states. [2020-01-16 17:58:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:32,699 INFO L93 Difference]: Finished difference Result 11895 states and 58601 transitions. [2020-01-16 17:58:32,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:32,700 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:32,816 INFO L225 Difference]: With dead ends: 11895 [2020-01-16 17:58:32,816 INFO L226 Difference]: Without dead ends: 11871 [2020-01-16 17:58:32,816 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:33,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11871 states. [2020-01-16 17:58:33,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11871 to 6222. [2020-01-16 17:58:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-01-16 17:58:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 34124 transitions. [2020-01-16 17:58:33,445 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 34124 transitions. Word has length 34 [2020-01-16 17:58:33,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:33,446 INFO L478 AbstractCegarLoop]: Abstraction has 6222 states and 34124 transitions. [2020-01-16 17:58:33,446 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 34124 transitions. [2020-01-16 17:58:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:33,457 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:33,457 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:33,457 INFO L426 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:33,457 INFO L82 PathProgramCache]: Analyzing trace with hash 149318464, now seen corresponding path program 198 times [2020-01-16 17:58:33,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:33,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918045576] [2020-01-16 17:58:33,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:34,011 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:58:34,154 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:58:34,300 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:34,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918045576] [2020-01-16 17:58:34,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:34,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:34,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124432795] [2020-01-16 17:58:34,312 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:34,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:34,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:34,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:34,312 INFO L87 Difference]: Start difference. First operand 6222 states and 34124 transitions. Second operand 13 states. [2020-01-16 17:58:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:34,623 INFO L93 Difference]: Finished difference Result 11891 states and 58585 transitions. [2020-01-16 17:58:34,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:34,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:34,654 INFO L225 Difference]: With dead ends: 11891 [2020-01-16 17:58:34,654 INFO L226 Difference]: Without dead ends: 11854 [2020-01-16 17:58:34,654 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11854 states. [2020-01-16 17:58:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11854 to 6205. [2020-01-16 17:58:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6205 states. [2020-01-16 17:58:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6205 states to 6205 states and 34085 transitions. [2020-01-16 17:58:35,291 INFO L78 Accepts]: Start accepts. Automaton has 6205 states and 34085 transitions. Word has length 34 [2020-01-16 17:58:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:35,292 INFO L478 AbstractCegarLoop]: Abstraction has 6205 states and 34085 transitions. [2020-01-16 17:58:35,292 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:35,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6205 states and 34085 transitions. [2020-01-16 17:58:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:35,303 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:35,303 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:35,303 INFO L426 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:35,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:35,303 INFO L82 PathProgramCache]: Analyzing trace with hash -590359184, now seen corresponding path program 199 times [2020-01-16 17:58:35,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:35,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606002798] [2020-01-16 17:58:35,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:35,869 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:58:36,012 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:58:36,162 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:58:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:36,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606002798] [2020-01-16 17:58:36,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:36,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:36,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866526124] [2020-01-16 17:58:36,174 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:36,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:36,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:36,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:36,174 INFO L87 Difference]: Start difference. First operand 6205 states and 34085 transitions. Second operand 13 states. [2020-01-16 17:58:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:36,664 INFO L93 Difference]: Finished difference Result 11890 states and 58599 transitions. [2020-01-16 17:58:36,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:36,665 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:36,694 INFO L225 Difference]: With dead ends: 11890 [2020-01-16 17:58:36,694 INFO L226 Difference]: Without dead ends: 11871 [2020-01-16 17:58:36,694 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11871 states. [2020-01-16 17:58:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11871 to 6221. [2020-01-16 17:58:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:58:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34130 transitions. [2020-01-16 17:58:37,331 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34130 transitions. Word has length 34 [2020-01-16 17:58:37,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:37,331 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34130 transitions. [2020-01-16 17:58:37,331 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:37,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34130 transitions. [2020-01-16 17:58:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:37,342 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:37,342 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:37,342 INFO L426 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:37,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:37,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1575295468, now seen corresponding path program 200 times [2020-01-16 17:58:37,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:37,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001771201] [2020-01-16 17:58:37,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:37,906 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:58:38,054 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:58:38,203 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:58:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:38,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001771201] [2020-01-16 17:58:38,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:38,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:38,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401198368] [2020-01-16 17:58:38,215 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:38,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:38,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:38,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:38,215 INFO L87 Difference]: Start difference. First operand 6221 states and 34130 transitions. Second operand 13 states. [2020-01-16 17:58:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:38,661 INFO L93 Difference]: Finished difference Result 11895 states and 58601 transitions. [2020-01-16 17:58:38,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:38,661 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:38,690 INFO L225 Difference]: With dead ends: 11895 [2020-01-16 17:58:38,690 INFO L226 Difference]: Without dead ends: 11863 [2020-01-16 17:58:38,690 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11863 states. [2020-01-16 17:58:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11863 to 6213. [2020-01-16 17:58:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:58:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34107 transitions. [2020-01-16 17:58:39,415 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34107 transitions. Word has length 34 [2020-01-16 17:58:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:39,416 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34107 transitions. [2020-01-16 17:58:39,416 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34107 transitions. [2020-01-16 17:58:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:39,427 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:39,427 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:39,427 INFO L426 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:39,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:39,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1665344896, now seen corresponding path program 201 times [2020-01-16 17:58:39,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:39,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872689627] [2020-01-16 17:58:39,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:40,122 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:58:40,273 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:58:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:40,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872689627] [2020-01-16 17:58:40,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:40,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:40,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100412638] [2020-01-16 17:58:40,285 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:40,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:40,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:40,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:40,285 INFO L87 Difference]: Start difference. First operand 6213 states and 34107 transitions. Second operand 13 states. [2020-01-16 17:58:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:40,576 INFO L93 Difference]: Finished difference Result 11886 states and 58584 transitions. [2020-01-16 17:58:40,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:40,576 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:40,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:40,606 INFO L225 Difference]: With dead ends: 11886 [2020-01-16 17:58:40,606 INFO L226 Difference]: Without dead ends: 11867 [2020-01-16 17:58:40,607 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2020-01-16 17:58:41,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 6220. [2020-01-16 17:58:41,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:58:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34120 transitions. [2020-01-16 17:58:41,242 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34120 transitions. Word has length 34 [2020-01-16 17:58:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:41,242 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34120 transitions. [2020-01-16 17:58:41,243 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34120 transitions. [2020-01-16 17:58:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:41,254 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:41,254 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:41,254 INFO L426 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:41,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:41,254 INFO L82 PathProgramCache]: Analyzing trace with hash -249184588, now seen corresponding path program 202 times [2020-01-16 17:58:41,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:41,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828325735] [2020-01-16 17:58:41,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:41,953 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:58:42,101 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:58:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:42,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828325735] [2020-01-16 17:58:42,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:42,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:42,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751902661] [2020-01-16 17:58:42,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:42,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:42,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:42,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:42,112 INFO L87 Difference]: Start difference. First operand 6220 states and 34120 transitions. Second operand 13 states. [2020-01-16 17:58:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:42,411 INFO L93 Difference]: Finished difference Result 11888 states and 58581 transitions. [2020-01-16 17:58:42,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:42,412 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:42,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:42,441 INFO L225 Difference]: With dead ends: 11888 [2020-01-16 17:58:42,441 INFO L226 Difference]: Without dead ends: 11860 [2020-01-16 17:58:42,441 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11860 states. [2020-01-16 17:58:43,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11860 to 6213. [2020-01-16 17:58:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-01-16 17:58:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 34100 transitions. [2020-01-16 17:58:43,081 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 34100 transitions. Word has length 34 [2020-01-16 17:58:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:43,081 INFO L478 AbstractCegarLoop]: Abstraction has 6213 states and 34100 transitions. [2020-01-16 17:58:43,081 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 34100 transitions. [2020-01-16 17:58:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:43,092 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:43,092 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:43,092 INFO L426 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:43,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:43,093 INFO L82 PathProgramCache]: Analyzing trace with hash -623998880, now seen corresponding path program 203 times [2020-01-16 17:58:43,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:43,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090180254] [2020-01-16 17:58:43,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:43,654 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:58:43,801 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:58:43,954 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:58:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:43,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090180254] [2020-01-16 17:58:43,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:43,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:43,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115507220] [2020-01-16 17:58:43,965 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:43,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:43,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:43,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:43,966 INFO L87 Difference]: Start difference. First operand 6213 states and 34100 transitions. Second operand 13 states. [2020-01-16 17:58:44,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:44,208 INFO L93 Difference]: Finished difference Result 11899 states and 58603 transitions. [2020-01-16 17:58:44,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:44,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:44,237 INFO L225 Difference]: With dead ends: 11899 [2020-01-16 17:58:44,238 INFO L226 Difference]: Without dead ends: 11875 [2020-01-16 17:58:44,238 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:44,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11875 states. [2020-01-16 17:58:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11875 to 6223. [2020-01-16 17:58:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-01-16 17:58:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 34118 transitions. [2020-01-16 17:58:44,871 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 34118 transitions. Word has length 34 [2020-01-16 17:58:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:44,871 INFO L478 AbstractCegarLoop]: Abstraction has 6223 states and 34118 transitions. [2020-01-16 17:58:44,871 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:44,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 34118 transitions. [2020-01-16 17:58:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:44,881 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:44,881 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:44,882 INFO L426 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:44,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1877214864, now seen corresponding path program 204 times [2020-01-16 17:58:44,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:44,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083279462] [2020-01-16 17:58:44,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:45,434 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:58:45,675 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:58:45,821 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:58:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:45,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083279462] [2020-01-16 17:58:45,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:45,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:45,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897554030] [2020-01-16 17:58:45,832 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:45,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:45,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:45,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:45,833 INFO L87 Difference]: Start difference. First operand 6223 states and 34118 transitions. Second operand 13 states. [2020-01-16 17:58:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:46,191 INFO L93 Difference]: Finished difference Result 11896 states and 58588 transitions. [2020-01-16 17:58:46,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:46,191 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:46,225 INFO L225 Difference]: With dead ends: 11896 [2020-01-16 17:58:46,225 INFO L226 Difference]: Without dead ends: 11857 [2020-01-16 17:58:46,225 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11857 states. [2020-01-16 17:58:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11857 to 6205. [2020-01-16 17:58:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6205 states. [2020-01-16 17:58:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6205 states to 6205 states and 34077 transitions. [2020-01-16 17:58:46,864 INFO L78 Accepts]: Start accepts. Automaton has 6205 states and 34077 transitions. Word has length 34 [2020-01-16 17:58:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:46,864 INFO L478 AbstractCegarLoop]: Abstraction has 6205 states and 34077 transitions. [2020-01-16 17:58:46,864 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 6205 states and 34077 transitions. [2020-01-16 17:58:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:46,875 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:46,875 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:46,875 INFO L426 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash -615236944, now seen corresponding path program 205 times [2020-01-16 17:58:46,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:46,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115306368] [2020-01-16 17:58:46,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:47,440 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-01-16 17:58:47,583 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:58:47,736 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:58:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:47,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115306368] [2020-01-16 17:58:47,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:47,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:47,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152559469] [2020-01-16 17:58:47,748 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:47,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:47,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:47,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:47,748 INFO L87 Difference]: Start difference. First operand 6205 states and 34077 transitions. Second operand 13 states. [2020-01-16 17:58:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:48,157 INFO L93 Difference]: Finished difference Result 11877 states and 58565 transitions. [2020-01-16 17:58:48,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:48,157 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:48,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:48,185 INFO L225 Difference]: With dead ends: 11877 [2020-01-16 17:58:48,186 INFO L226 Difference]: Without dead ends: 11858 [2020-01-16 17:58:48,186 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11858 states. [2020-01-16 17:58:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11858 to 6219. [2020-01-16 17:58:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:58:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34117 transitions. [2020-01-16 17:58:48,821 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34117 transitions. Word has length 34 [2020-01-16 17:58:48,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:48,821 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34117 transitions. [2020-01-16 17:58:48,821 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34117 transitions. [2020-01-16 17:58:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:48,832 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:48,832 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:48,832 INFO L426 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:48,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:48,833 INFO L82 PathProgramCache]: Analyzing trace with hash 685142986, now seen corresponding path program 206 times [2020-01-16 17:58:48,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:48,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807868409] [2020-01-16 17:58:48,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:49,394 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-01-16 17:58:49,542 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:58:49,696 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:49,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807868409] [2020-01-16 17:58:49,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:49,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:49,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760345109] [2020-01-16 17:58:49,708 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:49,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:49,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:49,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:49,708 INFO L87 Difference]: Start difference. First operand 6219 states and 34117 transitions. Second operand 13 states. [2020-01-16 17:58:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:50,018 INFO L93 Difference]: Finished difference Result 11878 states and 58560 transitions. [2020-01-16 17:58:50,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:50,019 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:50,047 INFO L225 Difference]: With dead ends: 11878 [2020-01-16 17:58:50,047 INFO L226 Difference]: Without dead ends: 11851 [2020-01-16 17:58:50,047 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11851 states. [2020-01-16 17:58:50,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11851 to 6212. [2020-01-16 17:58:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:58:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34097 transitions. [2020-01-16 17:58:50,682 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34097 transitions. Word has length 34 [2020-01-16 17:58:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:50,682 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34097 transitions. [2020-01-16 17:58:50,682 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34097 transitions. [2020-01-16 17:58:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:50,693 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:50,693 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:50,693 INFO L426 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:50,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1129127062, now seen corresponding path program 207 times [2020-01-16 17:58:50,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:50,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263509601] [2020-01-16 17:58:50,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:51,396 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:58:51,546 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:58:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:51,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263509601] [2020-01-16 17:58:51,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:51,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:51,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135538887] [2020-01-16 17:58:51,558 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:51,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:51,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:51,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:51,558 INFO L87 Difference]: Start difference. First operand 6212 states and 34097 transitions. Second operand 13 states. [2020-01-16 17:58:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:51,869 INFO L93 Difference]: Finished difference Result 11878 states and 58560 transitions. [2020-01-16 17:58:51,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:51,870 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:51,898 INFO L225 Difference]: With dead ends: 11878 [2020-01-16 17:58:51,899 INFO L226 Difference]: Without dead ends: 11859 [2020-01-16 17:58:51,899 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:52,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11859 states. [2020-01-16 17:58:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11859 to 6219. [2020-01-16 17:58:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:58:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34110 transitions. [2020-01-16 17:58:52,606 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34110 transitions. Word has length 34 [2020-01-16 17:58:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:52,606 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34110 transitions. [2020-01-16 17:58:52,606 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34110 transitions. [2020-01-16 17:58:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:52,617 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:52,617 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:52,617 INFO L426 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:52,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:52,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1749679926, now seen corresponding path program 208 times [2020-01-16 17:58:52,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:52,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082885779] [2020-01-16 17:58:52,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:53,173 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-01-16 17:58:53,316 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:58:53,469 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-01-16 17:58:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:53,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082885779] [2020-01-16 17:58:53,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:53,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:53,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772318581] [2020-01-16 17:58:53,480 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:53,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:53,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:53,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:53,481 INFO L87 Difference]: Start difference. First operand 6219 states and 34110 transitions. Second operand 13 states. [2020-01-16 17:58:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:53,840 INFO L93 Difference]: Finished difference Result 11880 states and 58557 transitions. [2020-01-16 17:58:53,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:53,840 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:53,869 INFO L225 Difference]: With dead ends: 11880 [2020-01-16 17:58:53,869 INFO L226 Difference]: Without dead ends: 11852 [2020-01-16 17:58:53,869 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2020-01-16 17:58:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 6212. [2020-01-16 17:58:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:58:54,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34090 transitions. [2020-01-16 17:58:54,502 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34090 transitions. Word has length 34 [2020-01-16 17:58:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:54,502 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34090 transitions. [2020-01-16 17:58:54,503 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34090 transitions. [2020-01-16 17:58:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:54,514 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:54,514 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:54,514 INFO L426 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:54,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:54,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1636439574, now seen corresponding path program 209 times [2020-01-16 17:58:54,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:54,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518918495] [2020-01-16 17:58:54,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:55,070 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:58:55,220 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:58:55,371 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:55,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518918495] [2020-01-16 17:58:55,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:55,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:55,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740557817] [2020-01-16 17:58:55,383 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:55,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:55,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:55,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:55,383 INFO L87 Difference]: Start difference. First operand 6212 states and 34090 transitions. Second operand 13 states. [2020-01-16 17:58:55,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:55,781 INFO L93 Difference]: Finished difference Result 11881 states and 58560 transitions. [2020-01-16 17:58:55,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:55,781 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:55,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:55,811 INFO L225 Difference]: With dead ends: 11881 [2020-01-16 17:58:55,811 INFO L226 Difference]: Without dead ends: 11861 [2020-01-16 17:58:55,811 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11861 states. [2020-01-16 17:58:56,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11861 to 6220. [2020-01-16 17:58:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:58:56,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34105 transitions. [2020-01-16 17:58:56,445 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34105 transitions. Word has length 34 [2020-01-16 17:58:56,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:56,445 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34105 transitions. [2020-01-16 17:58:56,445 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34105 transitions. [2020-01-16 17:58:56,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:56,456 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:56,456 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:56,456 INFO L426 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:56,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:56,457 INFO L82 PathProgramCache]: Analyzing trace with hash -92607760, now seen corresponding path program 210 times [2020-01-16 17:58:56,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:56,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902405845] [2020-01-16 17:58:56,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:57,024 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:58:57,172 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:58:57,320 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:58:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:57,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902405845] [2020-01-16 17:58:57,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:57,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:57,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400539558] [2020-01-16 17:58:57,331 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:57,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:57,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:57,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:57,332 INFO L87 Difference]: Start difference. First operand 6220 states and 34105 transitions. Second operand 13 states. [2020-01-16 17:58:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:57,789 INFO L93 Difference]: Finished difference Result 11882 states and 58554 transitions. [2020-01-16 17:58:57,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:57,790 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:57,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:57,819 INFO L225 Difference]: With dead ends: 11882 [2020-01-16 17:58:57,819 INFO L226 Difference]: Without dead ends: 11846 [2020-01-16 17:58:57,820 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:58:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2020-01-16 17:58:58,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 6205. [2020-01-16 17:58:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6205 states. [2020-01-16 17:58:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6205 states to 6205 states and 34070 transitions. [2020-01-16 17:58:58,581 INFO L78 Accepts]: Start accepts. Automaton has 6205 states and 34070 transitions. Word has length 34 [2020-01-16 17:58:58,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:58:58,581 INFO L478 AbstractCegarLoop]: Abstraction has 6205 states and 34070 transitions. [2020-01-16 17:58:58,581 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:58:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 6205 states and 34070 transitions. [2020-01-16 17:58:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:58:58,592 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:58:58,592 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:58:58,592 INFO L426 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:58:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:58:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1266490516, now seen corresponding path program 211 times [2020-01-16 17:58:58,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:58:58,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485141908] [2020-01-16 17:58:58,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:58:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:58:59,177 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:58:59,331 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-01-16 17:58:59,485 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:58:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:58:59,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485141908] [2020-01-16 17:58:59,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:58:59,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:58:59,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538905476] [2020-01-16 17:58:59,497 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:58:59,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:58:59,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:58:59,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:58:59,497 INFO L87 Difference]: Start difference. First operand 6205 states and 34070 transitions. Second operand 13 states. [2020-01-16 17:58:59,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:58:59,836 INFO L93 Difference]: Finished difference Result 11901 states and 58610 transitions. [2020-01-16 17:58:59,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:58:59,837 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:58:59,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:58:59,866 INFO L225 Difference]: With dead ends: 11901 [2020-01-16 17:58:59,866 INFO L226 Difference]: Without dead ends: 11877 [2020-01-16 17:58:59,867 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:00,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2020-01-16 17:59:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 6223. [2020-01-16 17:59:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-01-16 17:59:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 34120 transitions. [2020-01-16 17:59:00,499 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 34120 transitions. Word has length 34 [2020-01-16 17:59:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:00,499 INFO L478 AbstractCegarLoop]: Abstraction has 6223 states and 34120 transitions. [2020-01-16 17:59:00,499 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:00,499 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 34120 transitions. [2020-01-16 17:59:00,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:00,509 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:00,509 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:00,509 INFO L426 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:00,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:00,510 INFO L82 PathProgramCache]: Analyzing trace with hash -425258380, now seen corresponding path program 212 times [2020-01-16 17:59:00,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:00,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243866580] [2020-01-16 17:59:00,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:01,070 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 17:59:01,215 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:59:01,364 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:59:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:01,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243866580] [2020-01-16 17:59:01,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:01,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:01,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986064219] [2020-01-16 17:59:01,374 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:01,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:01,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:01,374 INFO L87 Difference]: Start difference. First operand 6223 states and 34120 transitions. Second operand 13 states. [2020-01-16 17:59:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:01,674 INFO L93 Difference]: Finished difference Result 11897 states and 58594 transitions. [2020-01-16 17:59:01,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:01,675 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:01,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:01,707 INFO L225 Difference]: With dead ends: 11897 [2020-01-16 17:59:01,707 INFO L226 Difference]: Without dead ends: 11868 [2020-01-16 17:59:01,708 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11868 states. [2020-01-16 17:59:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11868 to 6214. [2020-01-16 17:59:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:59:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34095 transitions. [2020-01-16 17:59:02,346 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34095 transitions. Word has length 34 [2020-01-16 17:59:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:02,346 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34095 transitions. [2020-01-16 17:59:02,346 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:02,346 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34095 transitions. [2020-01-16 17:59:02,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:02,357 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:02,357 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:02,357 INFO L426 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:02,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:02,357 INFO L82 PathProgramCache]: Analyzing trace with hash -794369286, now seen corresponding path program 213 times [2020-01-16 17:59:02,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:02,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579799] [2020-01-16 17:59:02,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:02,920 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:03,070 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-01-16 17:59:03,229 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:03,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579799] [2020-01-16 17:59:03,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:03,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:03,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385059204] [2020-01-16 17:59:03,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:03,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:03,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:03,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:03,240 INFO L87 Difference]: Start difference. First operand 6214 states and 34095 transitions. Second operand 13 states. [2020-01-16 17:59:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:03,512 INFO L93 Difference]: Finished difference Result 11903 states and 58606 transitions. [2020-01-16 17:59:03,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:03,513 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:03,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:03,542 INFO L225 Difference]: With dead ends: 11903 [2020-01-16 17:59:03,542 INFO L226 Difference]: Without dead ends: 11879 [2020-01-16 17:59:03,542 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11879 states. [2020-01-16 17:59:04,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11879 to 6224. [2020-01-16 17:59:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6224 states. [2020-01-16 17:59:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 34113 transitions. [2020-01-16 17:59:04,180 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 34113 transitions. Word has length 34 [2020-01-16 17:59:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:04,180 INFO L478 AbstractCegarLoop]: Abstraction has 6224 states and 34113 transitions. [2020-01-16 17:59:04,181 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 34113 transitions. [2020-01-16 17:59:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:04,191 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:04,192 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:04,192 INFO L426 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:04,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2047585270, now seen corresponding path program 214 times [2020-01-16 17:59:04,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:04,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879238221] [2020-01-16 17:59:04,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:04,751 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:04,896 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:05,050 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:05,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879238221] [2020-01-16 17:59:05,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:05,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:05,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781694560] [2020-01-16 17:59:05,061 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:05,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:05,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:05,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:05,061 INFO L87 Difference]: Start difference. First operand 6224 states and 34113 transitions. Second operand 13 states. [2020-01-16 17:59:05,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:05,457 INFO L93 Difference]: Finished difference Result 11900 states and 58591 transitions. [2020-01-16 17:59:05,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:05,457 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:05,488 INFO L225 Difference]: With dead ends: 11900 [2020-01-16 17:59:05,488 INFO L226 Difference]: Without dead ends: 11869 [2020-01-16 17:59:05,488 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11869 states. [2020-01-16 17:59:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11869 to 6214. [2020-01-16 17:59:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 17:59:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34086 transitions. [2020-01-16 17:59:06,125 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34086 transitions. Word has length 34 [2020-01-16 17:59:06,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:06,125 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34086 transitions. [2020-01-16 17:59:06,125 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34086 transitions. [2020-01-16 17:59:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:06,137 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:06,137 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:06,137 INFO L426 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:06,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash -926406668, now seen corresponding path program 215 times [2020-01-16 17:59:06,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:06,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789552133] [2020-01-16 17:59:06,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:06,696 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:59:06,840 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:59:06,991 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:59:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:07,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789552133] [2020-01-16 17:59:07,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:07,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:07,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466711329] [2020-01-16 17:59:07,002 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:07,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:07,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:07,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:07,002 INFO L87 Difference]: Start difference. First operand 6214 states and 34086 transitions. Second operand 13 states. [2020-01-16 17:59:07,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:07,346 INFO L93 Difference]: Finished difference Result 11893 states and 58578 transitions. [2020-01-16 17:59:07,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:07,346 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:07,374 INFO L225 Difference]: With dead ends: 11893 [2020-01-16 17:59:07,374 INFO L226 Difference]: Without dead ends: 11873 [2020-01-16 17:59:07,374 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:07,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11873 states. [2020-01-16 17:59:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11873 to 6222. [2020-01-16 17:59:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-01-16 17:59:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 34101 transitions. [2020-01-16 17:59:08,012 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 34101 transitions. Word has length 34 [2020-01-16 17:59:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:08,012 INFO L478 AbstractCegarLoop]: Abstraction has 6222 states and 34101 transitions. [2020-01-16 17:59:08,013 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 34101 transitions. [2020-01-16 17:59:08,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:08,023 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:08,024 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:08,024 INFO L426 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:08,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1650216922, now seen corresponding path program 216 times [2020-01-16 17:59:08,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:08,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620197354] [2020-01-16 17:59:08,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:08,581 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:59:08,727 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:08,879 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:08,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620197354] [2020-01-16 17:59:08,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:08,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:08,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4279258] [2020-01-16 17:59:08,889 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:08,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:08,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:08,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:08,890 INFO L87 Difference]: Start difference. First operand 6222 states and 34101 transitions. Second operand 13 states. [2020-01-16 17:59:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:09,255 INFO L93 Difference]: Finished difference Result 11894 states and 58572 transitions. [2020-01-16 17:59:09,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:09,256 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:09,286 INFO L225 Difference]: With dead ends: 11894 [2020-01-16 17:59:09,286 INFO L226 Difference]: Without dead ends: 11848 [2020-01-16 17:59:09,286 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2020-01-16 17:59:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 6197. [2020-01-16 17:59:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6197 states. [2020-01-16 17:59:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 34047 transitions. [2020-01-16 17:59:09,920 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 34047 transitions. Word has length 34 [2020-01-16 17:59:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:09,920 INFO L478 AbstractCegarLoop]: Abstraction has 6197 states and 34047 transitions. [2020-01-16 17:59:09,920 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 34047 transitions. [2020-01-16 17:59:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:09,931 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:09,931 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:09,931 INFO L426 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:09,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:09,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1844398148, now seen corresponding path program 217 times [2020-01-16 17:59:09,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:09,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232488031] [2020-01-16 17:59:09,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:10,619 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:59:10,775 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:10,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232488031] [2020-01-16 17:59:10,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:10,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:10,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66104665] [2020-01-16 17:59:10,786 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:10,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:10,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:10,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:10,787 INFO L87 Difference]: Start difference. First operand 6197 states and 34047 transitions. Second operand 13 states. [2020-01-16 17:59:11,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:11,151 INFO L93 Difference]: Finished difference Result 11871 states and 58557 transitions. [2020-01-16 17:59:11,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:11,152 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:11,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:11,181 INFO L225 Difference]: With dead ends: 11871 [2020-01-16 17:59:11,181 INFO L226 Difference]: Without dead ends: 11852 [2020-01-16 17:59:11,182 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2020-01-16 17:59:11,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 6218. [2020-01-16 17:59:11,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:59:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34121 transitions. [2020-01-16 17:59:11,907 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34121 transitions. Word has length 34 [2020-01-16 17:59:11,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:11,908 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34121 transitions. [2020-01-16 17:59:11,908 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34121 transitions. [2020-01-16 17:59:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:11,919 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:11,919 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:11,919 INFO L426 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:11,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2052860902, now seen corresponding path program 218 times [2020-01-16 17:59:11,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:11,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922993904] [2020-01-16 17:59:11,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:12,614 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:12,764 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:12,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922993904] [2020-01-16 17:59:12,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:12,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:12,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088695991] [2020-01-16 17:59:12,776 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:12,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:12,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:12,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:12,776 INFO L87 Difference]: Start difference. First operand 6218 states and 34121 transitions. Second operand 13 states. [2020-01-16 17:59:13,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:13,105 INFO L93 Difference]: Finished difference Result 11874 states and 58556 transitions. [2020-01-16 17:59:13,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:13,105 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:13,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:13,134 INFO L225 Difference]: With dead ends: 11874 [2020-01-16 17:59:13,135 INFO L226 Difference]: Without dead ends: 11845 [2020-01-16 17:59:13,135 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:13,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11845 states. [2020-01-16 17:59:13,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11845 to 6211. [2020-01-16 17:59:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:59:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34101 transitions. [2020-01-16 17:59:13,767 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34101 transitions. Word has length 34 [2020-01-16 17:59:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:13,768 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34101 transitions. [2020-01-16 17:59:13,768 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34101 transitions. [2020-01-16 17:59:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:13,779 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:13,779 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:13,779 INFO L426 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2113144576, now seen corresponding path program 219 times [2020-01-16 17:59:13,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:13,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981877543] [2020-01-16 17:59:13,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:14,329 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:59:14,478 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 17:59:14,632 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:14,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981877543] [2020-01-16 17:59:14,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:14,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:14,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947659925] [2020-01-16 17:59:14,644 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:14,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:14,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:14,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:14,644 INFO L87 Difference]: Start difference. First operand 6211 states and 34101 transitions. Second operand 13 states. [2020-01-16 17:59:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:15,029 INFO L93 Difference]: Finished difference Result 11869 states and 58546 transitions. [2020-01-16 17:59:15,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:15,030 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:15,059 INFO L225 Difference]: With dead ends: 11869 [2020-01-16 17:59:15,059 INFO L226 Difference]: Without dead ends: 11850 [2020-01-16 17:59:15,059 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11850 states. [2020-01-16 17:59:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11850 to 6218. [2020-01-16 17:59:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:59:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34114 transitions. [2020-01-16 17:59:15,699 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34114 transitions. Word has length 34 [2020-01-16 17:59:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:15,699 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34114 transitions. [2020-01-16 17:59:15,699 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34114 transitions. [2020-01-16 17:59:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:15,709 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:15,709 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:15,709 INFO L426 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:15,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:15,710 INFO L82 PathProgramCache]: Analyzing trace with hash -812764646, now seen corresponding path program 220 times [2020-01-16 17:59:15,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:15,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616460193] [2020-01-16 17:59:15,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:16,274 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:59:16,419 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:16,571 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:59:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:16,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616460193] [2020-01-16 17:59:16,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:16,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:16,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684031397] [2020-01-16 17:59:16,583 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:16,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:16,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:16,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:16,583 INFO L87 Difference]: Start difference. First operand 6218 states and 34114 transitions. Second operand 13 states. [2020-01-16 17:59:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:17,029 INFO L93 Difference]: Finished difference Result 11870 states and 58541 transitions. [2020-01-16 17:59:17,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:17,029 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:17,061 INFO L225 Difference]: With dead ends: 11870 [2020-01-16 17:59:17,061 INFO L226 Difference]: Without dead ends: 11843 [2020-01-16 17:59:17,061 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2020-01-16 17:59:17,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 6211. [2020-01-16 17:59:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:59:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34094 transitions. [2020-01-16 17:59:17,701 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34094 transitions. Word has length 34 [2020-01-16 17:59:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:17,702 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34094 transitions. [2020-01-16 17:59:17,702 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34094 transitions. [2020-01-16 17:59:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:17,713 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:17,713 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:17,713 INFO L426 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:17,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:17,713 INFO L82 PathProgramCache]: Analyzing trace with hash -395788736, now seen corresponding path program 221 times [2020-01-16 17:59:17,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:17,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248069046] [2020-01-16 17:59:17,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:18,147 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-01-16 17:59:18,513 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:59:18,665 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:59:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:18,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248069046] [2020-01-16 17:59:18,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:18,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:18,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531073763] [2020-01-16 17:59:18,676 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:18,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:18,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:18,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:18,677 INFO L87 Difference]: Start difference. First operand 6211 states and 34094 transitions. Second operand 13 states. [2020-01-16 17:59:19,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:19,168 INFO L93 Difference]: Finished difference Result 11876 states and 58554 transitions. [2020-01-16 17:59:19,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:19,168 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:19,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:19,198 INFO L225 Difference]: With dead ends: 11876 [2020-01-16 17:59:19,198 INFO L226 Difference]: Without dead ends: 11854 [2020-01-16 17:59:19,199 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11854 states. [2020-01-16 17:59:19,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11854 to 6219. [2020-01-16 17:59:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:59:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34109 transitions. [2020-01-16 17:59:19,838 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34109 transitions. Word has length 34 [2020-01-16 17:59:19,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:19,838 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34109 transitions. [2020-01-16 17:59:19,838 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34109 transitions. [2020-01-16 17:59:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:19,849 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:19,849 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:19,849 INFO L426 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:19,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1314824572, now seen corresponding path program 222 times [2020-01-16 17:59:19,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:19,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936941800] [2020-01-16 17:59:19,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:20,540 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:20,692 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:59:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:20,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936941800] [2020-01-16 17:59:20,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:20,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:20,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810772512] [2020-01-16 17:59:20,704 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:20,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:20,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:20,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:20,704 INFO L87 Difference]: Start difference. First operand 6219 states and 34109 transitions. Second operand 13 states. [2020-01-16 17:59:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:21,048 INFO L93 Difference]: Finished difference Result 11874 states and 58542 transitions. [2020-01-16 17:59:21,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:21,048 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:21,077 INFO L225 Difference]: With dead ends: 11874 [2020-01-16 17:59:21,077 INFO L226 Difference]: Without dead ends: 11839 [2020-01-16 17:59:21,078 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11839 states. [2020-01-16 17:59:21,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11839 to 6204. [2020-01-16 17:59:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6204 states. [2020-01-16 17:59:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 34074 transitions. [2020-01-16 17:59:21,713 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 34074 transitions. Word has length 34 [2020-01-16 17:59:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:21,713 INFO L478 AbstractCegarLoop]: Abstraction has 6204 states and 34074 transitions. [2020-01-16 17:59:21,713 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 34074 transitions. [2020-01-16 17:59:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:21,724 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:21,724 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:21,724 INFO L426 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:21,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:21,724 INFO L82 PathProgramCache]: Analyzing trace with hash 691278486, now seen corresponding path program 223 times [2020-01-16 17:59:21,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:21,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13345863] [2020-01-16 17:59:21,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:22,283 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 17:59:22,432 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 17:59:22,577 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:59:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:22,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13345863] [2020-01-16 17:59:22,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:22,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:22,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344707452] [2020-01-16 17:59:22,587 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:22,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:22,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:22,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:22,588 INFO L87 Difference]: Start difference. First operand 6204 states and 34074 transitions. Second operand 13 states. [2020-01-16 17:59:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:22,880 INFO L93 Difference]: Finished difference Result 11873 states and 58555 transitions. [2020-01-16 17:59:22,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:22,880 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:22,909 INFO L225 Difference]: With dead ends: 11873 [2020-01-16 17:59:22,909 INFO L226 Difference]: Without dead ends: 11854 [2020-01-16 17:59:22,910 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11854 states. [2020-01-16 17:59:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11854 to 6218. [2020-01-16 17:59:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:59:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34114 transitions. [2020-01-16 17:59:23,549 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34114 transitions. Word has length 34 [2020-01-16 17:59:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:23,549 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34114 transitions. [2020-01-16 17:59:23,550 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34114 transitions. [2020-01-16 17:59:23,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:23,560 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:23,560 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:23,561 INFO L426 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:23,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:23,561 INFO L82 PathProgramCache]: Analyzing trace with hash 482815732, now seen corresponding path program 224 times [2020-01-16 17:59:23,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:23,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627030970] [2020-01-16 17:59:23,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:24,267 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:59:24,416 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:59:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:24,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627030970] [2020-01-16 17:59:24,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:24,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:24,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076171515] [2020-01-16 17:59:24,427 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:24,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:24,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:24,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:24,428 INFO L87 Difference]: Start difference. First operand 6218 states and 34114 transitions. Second operand 13 states. [2020-01-16 17:59:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:24,765 INFO L93 Difference]: Finished difference Result 11876 states and 58554 transitions. [2020-01-16 17:59:24,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:24,765 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:24,793 INFO L225 Difference]: With dead ends: 11876 [2020-01-16 17:59:24,794 INFO L226 Difference]: Without dead ends: 11847 [2020-01-16 17:59:24,794 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11847 states. [2020-01-16 17:59:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11847 to 6211. [2020-01-16 17:59:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:59:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34094 transitions. [2020-01-16 17:59:25,510 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34094 transitions. Word has length 34 [2020-01-16 17:59:25,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:25,510 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34094 transitions. [2020-01-16 17:59:25,510 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34094 transitions. [2020-01-16 17:59:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:25,521 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:25,521 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:25,522 INFO L426 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:25,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:25,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2128071232, now seen corresponding path program 225 times [2020-01-16 17:59:25,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:25,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400209979] [2020-01-16 17:59:25,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:26,226 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:26,378 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:26,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400209979] [2020-01-16 17:59:26,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:26,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:26,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760234815] [2020-01-16 17:59:26,389 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:26,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:26,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:26,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:26,390 INFO L87 Difference]: Start difference. First operand 6211 states and 34094 transitions. Second operand 13 states. [2020-01-16 17:59:26,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:26,672 INFO L93 Difference]: Finished difference Result 11872 states and 58546 transitions. [2020-01-16 17:59:26,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:26,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:26,702 INFO L225 Difference]: With dead ends: 11872 [2020-01-16 17:59:26,702 INFO L226 Difference]: Without dead ends: 11853 [2020-01-16 17:59:26,702 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2020-01-16 17:59:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 6218. [2020-01-16 17:59:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:59:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34107 transitions. [2020-01-16 17:59:27,346 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34107 transitions. Word has length 34 [2020-01-16 17:59:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:27,347 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34107 transitions. [2020-01-16 17:59:27,347 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34107 transitions. [2020-01-16 17:59:27,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:27,358 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:27,358 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:27,358 INFO L426 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:27,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:27,358 INFO L82 PathProgramCache]: Analyzing trace with hash -711910924, now seen corresponding path program 226 times [2020-01-16 17:59:27,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:27,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710178005] [2020-01-16 17:59:27,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:28,045 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:28,194 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:28,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710178005] [2020-01-16 17:59:28,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:28,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:28,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799246218] [2020-01-16 17:59:28,206 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:28,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:28,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:28,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:28,206 INFO L87 Difference]: Start difference. First operand 6218 states and 34107 transitions. Second operand 13 states. [2020-01-16 17:59:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:28,502 INFO L93 Difference]: Finished difference Result 11874 states and 58543 transitions. [2020-01-16 17:59:28,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:28,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:28,532 INFO L225 Difference]: With dead ends: 11874 [2020-01-16 17:59:28,532 INFO L226 Difference]: Without dead ends: 11846 [2020-01-16 17:59:28,532 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:29,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2020-01-16 17:59:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 6211. [2020-01-16 17:59:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:59:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34087 transitions. [2020-01-16 17:59:29,166 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34087 transitions. Word has length 34 [2020-01-16 17:59:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:29,166 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34087 transitions. [2020-01-16 17:59:29,166 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:29,166 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34087 transitions. [2020-01-16 17:59:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:29,177 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:29,177 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:29,177 INFO L426 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:29,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1434112320, now seen corresponding path program 227 times [2020-01-16 17:59:29,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:29,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066882770] [2020-01-16 17:59:29,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:29,744 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:59:29,891 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 17:59:30,035 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:59:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:30,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066882770] [2020-01-16 17:59:30,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:30,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:30,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596538181] [2020-01-16 17:59:30,046 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:30,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:30,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:30,047 INFO L87 Difference]: Start difference. First operand 6211 states and 34087 transitions. Second operand 13 states. [2020-01-16 17:59:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:30,377 INFO L93 Difference]: Finished difference Result 11880 states and 58557 transitions. [2020-01-16 17:59:30,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:30,377 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:30,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:30,407 INFO L225 Difference]: With dead ends: 11880 [2020-01-16 17:59:30,407 INFO L226 Difference]: Without dead ends: 11858 [2020-01-16 17:59:30,407 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:30,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11858 states. [2020-01-16 17:59:31,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11858 to 6220. [2020-01-16 17:59:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:59:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34104 transitions. [2020-01-16 17:59:31,046 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34104 transitions. Word has length 34 [2020-01-16 17:59:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:31,046 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34104 transitions. [2020-01-16 17:59:31,046 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34104 transitions. [2020-01-16 17:59:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:31,057 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:31,057 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:31,057 INFO L426 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:31,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:31,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1415678294, now seen corresponding path program 228 times [2020-01-16 17:59:31,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:31,057 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791006970] [2020-01-16 17:59:31,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:31,212 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2020-01-16 17:59:31,724 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 17:59:31,869 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:32,020 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:32,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791006970] [2020-01-16 17:59:32,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:32,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:32,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363878536] [2020-01-16 17:59:32,032 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:32,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:32,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:32,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:32,032 INFO L87 Difference]: Start difference. First operand 6220 states and 34104 transitions. Second operand 13 states. [2020-01-16 17:59:32,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:32,394 INFO L93 Difference]: Finished difference Result 11879 states and 58546 transitions. [2020-01-16 17:59:32,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:32,395 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:32,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:32,428 INFO L225 Difference]: With dead ends: 11879 [2020-01-16 17:59:32,429 INFO L226 Difference]: Without dead ends: 11842 [2020-01-16 17:59:32,429 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2020-01-16 17:59:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 6204. [2020-01-16 17:59:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6204 states. [2020-01-16 17:59:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 34067 transitions. [2020-01-16 17:59:33,065 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 34067 transitions. Word has length 34 [2020-01-16 17:59:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:33,065 INFO L478 AbstractCegarLoop]: Abstraction has 6204 states and 34067 transitions. [2020-01-16 17:59:33,065 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 34067 transitions. [2020-01-16 17:59:33,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:33,076 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:33,076 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:33,076 INFO L426 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:33,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:33,076 INFO L82 PathProgramCache]: Analyzing trace with hash 681327382, now seen corresponding path program 229 times [2020-01-16 17:59:33,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:33,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940904081] [2020-01-16 17:59:33,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:33,636 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:33,778 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:59:33,927 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-01-16 17:59:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:33,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940904081] [2020-01-16 17:59:33,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:33,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:33,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120307798] [2020-01-16 17:59:33,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:33,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:33,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:33,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:33,939 INFO L87 Difference]: Start difference. First operand 6204 states and 34067 transitions. Second operand 13 states. [2020-01-16 17:59:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:34,292 INFO L93 Difference]: Finished difference Result 11868 states and 58537 transitions. [2020-01-16 17:59:34,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:34,292 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:34,323 INFO L225 Difference]: With dead ends: 11868 [2020-01-16 17:59:34,323 INFO L226 Difference]: Without dead ends: 11849 [2020-01-16 17:59:34,323 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:34,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11849 states. [2020-01-16 17:59:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11849 to 6218. [2020-01-16 17:59:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:59:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34107 transitions. [2020-01-16 17:59:34,963 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34107 transitions. Word has length 34 [2020-01-16 17:59:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:34,963 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34107 transitions. [2020-01-16 17:59:34,963 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34107 transitions. [2020-01-16 17:59:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:34,974 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:34,974 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:34,974 INFO L426 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:34,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:34,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1981707312, now seen corresponding path program 230 times [2020-01-16 17:59:34,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:34,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249395497] [2020-01-16 17:59:34,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:35,533 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:35,677 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:59:35,828 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-01-16 17:59:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:35,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249395497] [2020-01-16 17:59:35,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:35,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:35,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135264799] [2020-01-16 17:59:35,840 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:35,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:35,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:35,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:35,840 INFO L87 Difference]: Start difference. First operand 6218 states and 34107 transitions. Second operand 13 states. [2020-01-16 17:59:36,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:36,194 INFO L93 Difference]: Finished difference Result 11869 states and 58532 transitions. [2020-01-16 17:59:36,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:36,195 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:36,222 INFO L225 Difference]: With dead ends: 11869 [2020-01-16 17:59:36,223 INFO L226 Difference]: Without dead ends: 11842 [2020-01-16 17:59:36,223 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2020-01-16 17:59:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 6211. [2020-01-16 17:59:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:59:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34087 transitions. [2020-01-16 17:59:36,856 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34087 transitions. Word has length 34 [2020-01-16 17:59:36,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:36,857 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34087 transitions. [2020-01-16 17:59:36,857 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:36,857 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34087 transitions. [2020-01-16 17:59:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:36,867 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:36,867 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:36,867 INFO L426 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:36,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:36,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1869275908, now seen corresponding path program 231 times [2020-01-16 17:59:36,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:36,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642664210] [2020-01-16 17:59:36,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:37,565 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:37,715 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:37,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642664210] [2020-01-16 17:59:37,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:37,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:37,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748462523] [2020-01-16 17:59:37,726 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:37,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:37,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:37,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:37,726 INFO L87 Difference]: Start difference. First operand 6211 states and 34087 transitions. Second operand 13 states. [2020-01-16 17:59:38,238 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-01-16 17:59:38,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:38,262 INFO L93 Difference]: Finished difference Result 11869 states and 58532 transitions. [2020-01-16 17:59:38,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:38,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:38,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:38,294 INFO L225 Difference]: With dead ends: 11869 [2020-01-16 17:59:38,294 INFO L226 Difference]: Without dead ends: 11850 [2020-01-16 17:59:38,294 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:38,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11850 states. [2020-01-16 17:59:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11850 to 6218. [2020-01-16 17:59:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 17:59:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34100 transitions. [2020-01-16 17:59:38,929 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34100 transitions. Word has length 34 [2020-01-16 17:59:38,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:38,929 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34100 transitions. [2020-01-16 17:59:38,929 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34100 transitions. [2020-01-16 17:59:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:38,940 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:38,941 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:38,941 INFO L426 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:38,941 INFO L82 PathProgramCache]: Analyzing trace with hash -453115600, now seen corresponding path program 232 times [2020-01-16 17:59:38,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:38,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233568451] [2020-01-16 17:59:38,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:39,637 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:39,789 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:39,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233568451] [2020-01-16 17:59:39,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:39,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:39,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604720283] [2020-01-16 17:59:39,800 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:39,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:39,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:39,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:39,801 INFO L87 Difference]: Start difference. First operand 6218 states and 34100 transitions. Second operand 13 states. [2020-01-16 17:59:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:40,251 INFO L93 Difference]: Finished difference Result 11871 states and 58529 transitions. [2020-01-16 17:59:40,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:40,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:40,280 INFO L225 Difference]: With dead ends: 11871 [2020-01-16 17:59:40,280 INFO L226 Difference]: Without dead ends: 11843 [2020-01-16 17:59:40,280 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2020-01-16 17:59:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 6211. [2020-01-16 17:59:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-01-16 17:59:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 34080 transitions. [2020-01-16 17:59:40,920 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 34080 transitions. Word has length 34 [2020-01-16 17:59:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:40,920 INFO L478 AbstractCegarLoop]: Abstraction has 6211 states and 34080 transitions. [2020-01-16 17:59:40,920 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 34080 transitions. [2020-01-16 17:59:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:40,931 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:40,931 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:40,931 INFO L426 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:40,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:40,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1361963396, now seen corresponding path program 233 times [2020-01-16 17:59:40,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:40,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079859518] [2020-01-16 17:59:40,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:41,491 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:41,642 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:59:41,795 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-01-16 17:59:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:41,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079859518] [2020-01-16 17:59:41,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:41,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:41,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489023222] [2020-01-16 17:59:41,807 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:41,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:41,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:41,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:41,807 INFO L87 Difference]: Start difference. First operand 6211 states and 34080 transitions. Second operand 13 states. [2020-01-16 17:59:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:42,168 INFO L93 Difference]: Finished difference Result 11872 states and 58532 transitions. [2020-01-16 17:59:42,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:42,169 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:42,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:42,198 INFO L225 Difference]: With dead ends: 11872 [2020-01-16 17:59:42,198 INFO L226 Difference]: Without dead ends: 11852 [2020-01-16 17:59:42,198 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2020-01-16 17:59:42,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 6219. [2020-01-16 17:59:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6219 states. [2020-01-16 17:59:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 34095 transitions. [2020-01-16 17:59:42,841 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 34095 transitions. Word has length 34 [2020-01-16 17:59:42,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:42,841 INFO L478 AbstractCegarLoop]: Abstraction has 6219 states and 34095 transitions. [2020-01-16 17:59:42,841 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 34095 transitions. [2020-01-16 17:59:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:42,852 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:42,852 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:42,852 INFO L426 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:42,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:42,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1203956566, now seen corresponding path program 234 times [2020-01-16 17:59:42,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:42,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883142074] [2020-01-16 17:59:42,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:43,421 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:43,563 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:59:43,713 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-01-16 17:59:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:43,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883142074] [2020-01-16 17:59:43,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:43,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:43,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121393629] [2020-01-16 17:59:43,725 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:43,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:43,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:43,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:43,726 INFO L87 Difference]: Start difference. First operand 6219 states and 34095 transitions. Second operand 13 states. [2020-01-16 17:59:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:44,011 INFO L93 Difference]: Finished difference Result 11873 states and 58526 transitions. [2020-01-16 17:59:44,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:44,012 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:44,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:44,041 INFO L225 Difference]: With dead ends: 11873 [2020-01-16 17:59:44,041 INFO L226 Difference]: Without dead ends: 11837 [2020-01-16 17:59:44,041 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:44,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11837 states. [2020-01-16 17:59:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11837 to 6204. [2020-01-16 17:59:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6204 states. [2020-01-16 17:59:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 34060 transitions. [2020-01-16 17:59:44,799 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 34060 transitions. Word has length 34 [2020-01-16 17:59:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:44,799 INFO L478 AbstractCegarLoop]: Abstraction has 6204 states and 34060 transitions. [2020-01-16 17:59:44,799 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 34060 transitions. [2020-01-16 17:59:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:44,810 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:44,810 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:44,810 INFO L426 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:44,811 INFO L82 PathProgramCache]: Analyzing trace with hash -970365580, now seen corresponding path program 235 times [2020-01-16 17:59:44,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:44,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386108274] [2020-01-16 17:59:44,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:45,513 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:59:45,668 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:59:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:45,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386108274] [2020-01-16 17:59:45,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:45,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:45,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286343881] [2020-01-16 17:59:45,679 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:45,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:45,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:45,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:45,679 INFO L87 Difference]: Start difference. First operand 6204 states and 34060 transitions. Second operand 13 states. [2020-01-16 17:59:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:45,997 INFO L93 Difference]: Finished difference Result 11882 states and 58564 transitions. [2020-01-16 17:59:45,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:45,997 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:46,026 INFO L225 Difference]: With dead ends: 11882 [2020-01-16 17:59:46,027 INFO L226 Difference]: Without dead ends: 11860 [2020-01-16 17:59:46,027 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11860 states. [2020-01-16 17:59:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11860 to 6220. [2020-01-16 17:59:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:59:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34106 transitions. [2020-01-16 17:59:46,664 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34106 transitions. Word has length 34 [2020-01-16 17:59:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:46,664 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34106 transitions. [2020-01-16 17:59:46,664 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34106 transitions. [2020-01-16 17:59:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:46,675 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:46,675 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:46,675 INFO L426 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:46,675 INFO L82 PathProgramCache]: Analyzing trace with hash 740247728, now seen corresponding path program 236 times [2020-01-16 17:59:46,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:46,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059749220] [2020-01-16 17:59:46,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:47,224 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-01-16 17:59:47,373 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:47,528 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 17:59:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:47,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059749220] [2020-01-16 17:59:47,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:47,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:47,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31652585] [2020-01-16 17:59:47,539 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:47,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:47,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:47,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:47,540 INFO L87 Difference]: Start difference. First operand 6220 states and 34106 transitions. Second operand 13 states. [2020-01-16 17:59:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:47,946 INFO L93 Difference]: Finished difference Result 11880 states and 58552 transitions. [2020-01-16 17:59:47,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:47,947 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:47,976 INFO L225 Difference]: With dead ends: 11880 [2020-01-16 17:59:47,976 INFO L226 Difference]: Without dead ends: 11852 [2020-01-16 17:59:47,976 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:48,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2020-01-16 17:59:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 6212. [2020-01-16 17:59:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:59:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34083 transitions. [2020-01-16 17:59:48,611 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34083 transitions. Word has length 34 [2020-01-16 17:59:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:48,611 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34083 transitions. [2020-01-16 17:59:48,611 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34083 transitions. [2020-01-16 17:59:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:48,622 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:48,622 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:48,622 INFO L426 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:48,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1263741914, now seen corresponding path program 237 times [2020-01-16 17:59:48,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:48,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565616567] [2020-01-16 17:59:48,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:49,180 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:49,329 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:49,481 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2020-01-16 17:59:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:49,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565616567] [2020-01-16 17:59:49,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:49,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:49,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618897041] [2020-01-16 17:59:49,492 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:49,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:49,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:49,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:49,493 INFO L87 Difference]: Start difference. First operand 6212 states and 34083 transitions. Second operand 13 states. [2020-01-16 17:59:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:49,868 INFO L93 Difference]: Finished difference Result 11884 states and 58561 transitions. [2020-01-16 17:59:49,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:49,868 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:49,897 INFO L225 Difference]: With dead ends: 11884 [2020-01-16 17:59:49,897 INFO L226 Difference]: Without dead ends: 11862 [2020-01-16 17:59:49,897 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2020-01-16 17:59:50,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 6221. [2020-01-16 17:59:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 17:59:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34100 transitions. [2020-01-16 17:59:50,532 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34100 transitions. Word has length 34 [2020-01-16 17:59:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:50,533 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34100 transitions. [2020-01-16 17:59:50,533 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:50,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34100 transitions. [2020-01-16 17:59:50,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:50,544 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:50,544 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:50,544 INFO L426 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:50,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:50,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1245307888, now seen corresponding path program 238 times [2020-01-16 17:59:50,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:50,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593745929] [2020-01-16 17:59:50,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:51,099 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:51,251 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:59:51,405 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-01-16 17:59:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:51,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593745929] [2020-01-16 17:59:51,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:51,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:51,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426905681] [2020-01-16 17:59:51,416 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:51,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:51,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:51,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:51,417 INFO L87 Difference]: Start difference. First operand 6221 states and 34100 transitions. Second operand 13 states. [2020-01-16 17:59:51,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:51,831 INFO L93 Difference]: Finished difference Result 11883 states and 58550 transitions. [2020-01-16 17:59:51,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:51,832 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:51,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:51,867 INFO L225 Difference]: With dead ends: 11883 [2020-01-16 17:59:51,867 INFO L226 Difference]: Without dead ends: 11853 [2020-01-16 17:59:51,867 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2020-01-16 17:59:52,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 6212. [2020-01-16 17:59:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-01-16 17:59:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 34075 transitions. [2020-01-16 17:59:52,500 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 34075 transitions. Word has length 34 [2020-01-16 17:59:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:52,500 INFO L478 AbstractCegarLoop]: Abstraction has 6212 states and 34075 transitions. [2020-01-16 17:59:52,501 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 34075 transitions. [2020-01-16 17:59:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:52,511 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:52,511 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:52,511 INFO L426 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:52,512 INFO L82 PathProgramCache]: Analyzing trace with hash 168792922, now seen corresponding path program 239 times [2020-01-16 17:59:52,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:52,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811939218] [2020-01-16 17:59:52,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:53,067 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:53,214 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:59:53,369 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-01-16 17:59:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:53,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811939218] [2020-01-16 17:59:53,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:53,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:53,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137496606] [2020-01-16 17:59:53,379 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:53,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:53,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:53,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:53,379 INFO L87 Difference]: Start difference. First operand 6212 states and 34075 transitions. Second operand 13 states. [2020-01-16 17:59:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:53,693 INFO L93 Difference]: Finished difference Result 11879 states and 58542 transitions. [2020-01-16 17:59:53,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:53,694 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:53,723 INFO L225 Difference]: With dead ends: 11879 [2020-01-16 17:59:53,723 INFO L226 Difference]: Without dead ends: 11859 [2020-01-16 17:59:53,723 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11859 states. [2020-01-16 17:59:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11859 to 6220. [2020-01-16 17:59:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-01-16 17:59:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 34090 transitions. [2020-01-16 17:59:54,358 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 34090 transitions. Word has length 34 [2020-01-16 17:59:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:54,359 INFO L478 AbstractCegarLoop]: Abstraction has 6220 states and 34090 transitions. [2020-01-16 17:59:54,359 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 34090 transitions. [2020-01-16 17:59:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:54,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:54,370 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:54,370 INFO L426 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:54,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:54,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1560254412, now seen corresponding path program 240 times [2020-01-16 17:59:54,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:54,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136778283] [2020-01-16 17:59:54,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:54,920 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-01-16 17:59:55,068 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 17:59:55,219 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-01-16 17:59:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:55,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136778283] [2020-01-16 17:59:55,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:55,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:55,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990179159] [2020-01-16 17:59:55,230 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:55,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:55,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:55,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:55,231 INFO L87 Difference]: Start difference. First operand 6220 states and 34090 transitions. Second operand 13 states. [2020-01-16 17:59:55,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:55,585 INFO L93 Difference]: Finished difference Result 11880 states and 58536 transitions. [2020-01-16 17:59:55,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:55,585 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:55,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:55,614 INFO L225 Difference]: With dead ends: 11880 [2020-01-16 17:59:55,614 INFO L226 Difference]: Without dead ends: 11824 [2020-01-16 17:59:55,614 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11824 states. [2020-01-16 17:59:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11824 to 6185. [2020-01-16 17:59:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6185 states. [2020-01-16 17:59:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6185 states to 6185 states and 34018 transitions. [2020-01-16 17:59:56,247 INFO L78 Accepts]: Start accepts. Automaton has 6185 states and 34018 transitions. Word has length 34 [2020-01-16 17:59:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:56,247 INFO L478 AbstractCegarLoop]: Abstraction has 6185 states and 34018 transitions. [2020-01-16 17:59:56,248 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 6185 states and 34018 transitions. [2020-01-16 17:59:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:56,258 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:56,258 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:56,259 INFO L426 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1153765992, now seen corresponding path program 241 times [2020-01-16 17:59:56,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:56,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136770321] [2020-01-16 17:59:56,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:56,810 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-01-16 17:59:56,967 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 17:59:57,117 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 17:59:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:57,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136770321] [2020-01-16 17:59:57,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:57,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:57,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820387071] [2020-01-16 17:59:57,128 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:57,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:57,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:57,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:57,128 INFO L87 Difference]: Start difference. First operand 6185 states and 34018 transitions. Second operand 13 states. [2020-01-16 17:59:57,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:57,458 INFO L93 Difference]: Finished difference Result 11865 states and 58516 transitions. [2020-01-16 17:59:57,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:57,458 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:57,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:57,487 INFO L225 Difference]: With dead ends: 11865 [2020-01-16 17:59:57,487 INFO L226 Difference]: Without dead ends: 11841 [2020-01-16 17:59:57,487 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 17:59:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11841 states. [2020-01-16 17:59:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11841 to 6222. [2020-01-16 17:59:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-01-16 17:59:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 34151 transitions. [2020-01-16 17:59:58,252 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 34151 transitions. Word has length 34 [2020-01-16 17:59:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 17:59:58,252 INFO L478 AbstractCegarLoop]: Abstraction has 6222 states and 34151 transitions. [2020-01-16 17:59:58,253 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 17:59:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 34151 transitions. [2020-01-16 17:59:58,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 17:59:58,263 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 17:59:58,264 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 17:59:58,264 INFO L426 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 17:59:58,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 17:59:58,264 INFO L82 PathProgramCache]: Analyzing trace with hash 517299138, now seen corresponding path program 242 times [2020-01-16 17:59:58,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 17:59:58,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956889778] [2020-01-16 17:59:58,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 17:59:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 17:59:58,811 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-01-16 17:59:58,955 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 17:59:59,106 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 17:59:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 17:59:59,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956889778] [2020-01-16 17:59:59,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 17:59:59,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 17:59:59,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222534391] [2020-01-16 17:59:59,119 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 17:59:59,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 17:59:59,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 17:59:59,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 17:59:59,119 INFO L87 Difference]: Start difference. First operand 6222 states and 34151 transitions. Second operand 13 states. [2020-01-16 17:59:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 17:59:59,618 INFO L93 Difference]: Finished difference Result 11863 states and 58502 transitions. [2020-01-16 17:59:59,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 17:59:59,619 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 17:59:59,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 17:59:59,647 INFO L225 Difference]: With dead ends: 11863 [2020-01-16 17:59:59,647 INFO L226 Difference]: Without dead ends: 11829 [2020-01-16 17:59:59,647 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:00,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11829 states. [2020-01-16 18:00:00,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11829 to 6210. [2020-01-16 18:00:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6210 states. [2020-01-16 18:00:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 34121 transitions. [2020-01-16 18:00:00,282 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 34121 transitions. Word has length 34 [2020-01-16 18:00:00,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:00,283 INFO L478 AbstractCegarLoop]: Abstraction has 6210 states and 34121 transitions. [2020-01-16 18:00:00,283 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:00,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 34121 transitions. [2020-01-16 18:00:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:00,294 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:00,294 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:00,294 INFO L426 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1377946600, now seen corresponding path program 243 times [2020-01-16 18:00:00,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:00,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141727071] [2020-01-16 18:00:00,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:00,834 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:00:00,975 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 18:00:01,126 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 18:00:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:01,138 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141727071] [2020-01-16 18:00:01,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:01,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:01,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986550906] [2020-01-16 18:00:01,138 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:01,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:01,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:01,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:01,139 INFO L87 Difference]: Start difference. First operand 6210 states and 34121 transitions. Second operand 13 states. [2020-01-16 18:00:01,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:01,545 INFO L93 Difference]: Finished difference Result 11853 states and 58482 transitions. [2020-01-16 18:00:01,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:01,546 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:01,575 INFO L225 Difference]: With dead ends: 11853 [2020-01-16 18:00:01,575 INFO L226 Difference]: Without dead ends: 11834 [2020-01-16 18:00:01,575 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:02,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11834 states. [2020-01-16 18:00:02,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11834 to 6218. [2020-01-16 18:00:02,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-01-16 18:00:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 34136 transitions. [2020-01-16 18:00:02,316 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 34136 transitions. Word has length 34 [2020-01-16 18:00:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:02,316 INFO L478 AbstractCegarLoop]: Abstraction has 6218 states and 34136 transitions. [2020-01-16 18:00:02,316 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 34136 transitions. [2020-01-16 18:00:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:02,328 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:02,328 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:02,330 INFO L426 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:02,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:02,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1932084412, now seen corresponding path program 244 times [2020-01-16 18:00:02,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:02,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972181695] [2020-01-16 18:00:02,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:02,870 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:00:03,023 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 18:00:03,171 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 18:00:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:03,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972181695] [2020-01-16 18:00:03,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:03,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:03,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712165146] [2020-01-16 18:00:03,182 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:03,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:03,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:03,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:03,183 INFO L87 Difference]: Start difference. First operand 6218 states and 34136 transitions. Second operand 13 states. [2020-01-16 18:00:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:03,546 INFO L93 Difference]: Finished difference Result 11858 states and 58484 transitions. [2020-01-16 18:00:03,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:03,546 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:03,574 INFO L225 Difference]: With dead ends: 11858 [2020-01-16 18:00:03,575 INFO L226 Difference]: Without dead ends: 11826 [2020-01-16 18:00:03,575 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11826 states. [2020-01-16 18:00:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11826 to 6210. [2020-01-16 18:00:04,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6210 states. [2020-01-16 18:00:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 34113 transitions. [2020-01-16 18:00:04,214 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 34113 transitions. Word has length 34 [2020-01-16 18:00:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:04,214 INFO L478 AbstractCegarLoop]: Abstraction has 6210 states and 34113 transitions. [2020-01-16 18:00:04,214 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 34113 transitions. [2020-01-16 18:00:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:04,225 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:04,225 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:04,225 INFO L426 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:04,225 INFO L82 PathProgramCache]: Analyzing trace with hash 366417406, now seen corresponding path program 245 times [2020-01-16 18:00:04,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:04,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689904591] [2020-01-16 18:00:04,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:04,904 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-01-16 18:00:05,053 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 18:00:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:05,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689904591] [2020-01-16 18:00:05,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:05,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:05,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523985399] [2020-01-16 18:00:05,065 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:05,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:05,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:05,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:05,065 INFO L87 Difference]: Start difference. First operand 6210 states and 34113 transitions. Second operand 13 states. [2020-01-16 18:00:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:05,429 INFO L93 Difference]: Finished difference Result 11850 states and 58469 transitions. [2020-01-16 18:00:05,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:05,429 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:05,460 INFO L225 Difference]: With dead ends: 11850 [2020-01-16 18:00:05,460 INFO L226 Difference]: Without dead ends: 11831 [2020-01-16 18:00:05,460 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11831 states. [2020-01-16 18:00:06,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11831 to 6217. [2020-01-16 18:00:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6217 states. [2020-01-16 18:00:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 34126 transitions. [2020-01-16 18:00:06,100 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 34126 transitions. Word has length 34 [2020-01-16 18:00:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:06,100 INFO L478 AbstractCegarLoop]: Abstraction has 6217 states and 34126 transitions. [2020-01-16 18:00:06,101 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:06,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 34126 transitions. [2020-01-16 18:00:06,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:06,113 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:06,113 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:06,113 INFO L426 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:06,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:06,114 INFO L82 PathProgramCache]: Analyzing trace with hash 157954652, now seen corresponding path program 246 times [2020-01-16 18:00:06,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:06,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144407721] [2020-01-16 18:00:06,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:06,800 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 18:00:06,955 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 18:00:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:06,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144407721] [2020-01-16 18:00:06,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:06,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:06,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328974599] [2020-01-16 18:00:06,967 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:06,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:06,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:06,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:06,968 INFO L87 Difference]: Start difference. First operand 6217 states and 34126 transitions. Second operand 13 states. [2020-01-16 18:00:07,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:07,265 INFO L93 Difference]: Finished difference Result 11853 states and 58468 transitions. [2020-01-16 18:00:07,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:07,267 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:07,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:07,297 INFO L225 Difference]: With dead ends: 11853 [2020-01-16 18:00:07,297 INFO L226 Difference]: Without dead ends: 11815 [2020-01-16 18:00:07,297 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11815 states. [2020-01-16 18:00:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11815 to 6201. [2020-01-16 18:00:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6201 states. [2020-01-16 18:00:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6201 states to 6201 states and 34090 transitions. [2020-01-16 18:00:07,935 INFO L78 Accepts]: Start accepts. Automaton has 6201 states and 34090 transitions. Word has length 34 [2020-01-16 18:00:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:07,935 INFO L478 AbstractCegarLoop]: Abstraction has 6201 states and 34090 transitions. [2020-01-16 18:00:07,936 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:07,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6201 states and 34090 transitions. [2020-01-16 18:00:07,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:07,946 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:07,946 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:07,946 INFO L426 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:07,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:07,947 INFO L82 PathProgramCache]: Analyzing trace with hash 747969188, now seen corresponding path program 247 times [2020-01-16 18:00:07,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:07,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80326641] [2020-01-16 18:00:07,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:08,493 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-01-16 18:00:08,648 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 18:00:08,799 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 18:00:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:08,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80326641] [2020-01-16 18:00:08,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:08,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:08,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278865191] [2020-01-16 18:00:08,811 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:08,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:08,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:08,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:08,812 INFO L87 Difference]: Start difference. First operand 6201 states and 34090 transitions. Second operand 13 states. [2020-01-16 18:00:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:09,087 INFO L93 Difference]: Finished difference Result 11861 states and 58496 transitions. [2020-01-16 18:00:09,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:09,088 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:09,117 INFO L225 Difference]: With dead ends: 11861 [2020-01-16 18:00:09,117 INFO L226 Difference]: Without dead ends: 11837 [2020-01-16 18:00:09,118 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11837 states. [2020-01-16 18:00:09,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11837 to 6221. [2020-01-16 18:00:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-01-16 18:00:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 34139 transitions. [2020-01-16 18:00:09,753 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 34139 transitions. Word has length 34 [2020-01-16 18:00:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:09,753 INFO L478 AbstractCegarLoop]: Abstraction has 6221 states and 34139 transitions. [2020-01-16 18:00:09,753 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 34139 transitions. [2020-01-16 18:00:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:09,764 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:09,764 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:09,764 INFO L426 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:09,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:09,765 INFO L82 PathProgramCache]: Analyzing trace with hash 111502334, now seen corresponding path program 248 times [2020-01-16 18:00:09,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:09,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317001699] [2020-01-16 18:00:09,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:10,312 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-01-16 18:00:10,462 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 18:00:10,613 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 18:00:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:10,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317001699] [2020-01-16 18:00:10,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:10,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:10,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079090005] [2020-01-16 18:00:10,625 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:10,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:10,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:10,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:10,626 INFO L87 Difference]: Start difference. First operand 6221 states and 34139 transitions. Second operand 13 states. [2020-01-16 18:00:10,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:10,987 INFO L93 Difference]: Finished difference Result 11859 states and 58482 transitions. [2020-01-16 18:00:10,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:10,987 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:10,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:11,015 INFO L225 Difference]: With dead ends: 11859 [2020-01-16 18:00:11,016 INFO L226 Difference]: Without dead ends: 11825 [2020-01-16 18:00:11,016 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11825 states. [2020-01-16 18:00:11,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11825 to 6209. [2020-01-16 18:00:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 18:00:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34110 transitions. [2020-01-16 18:00:11,791 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34110 transitions. Word has length 34 [2020-01-16 18:00:11,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:11,791 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34110 transitions. [2020-01-16 18:00:11,791 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:11,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34110 transitions. [2020-01-16 18:00:11,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:11,803 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:11,803 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:11,803 INFO L426 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:11,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1548812252, now seen corresponding path program 249 times [2020-01-16 18:00:11,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:11,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543198244] [2020-01-16 18:00:11,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:12,337 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:00:12,487 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 18:00:12,639 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 18:00:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:12,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543198244] [2020-01-16 18:00:12,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:12,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:12,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023125021] [2020-01-16 18:00:12,653 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:12,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:12,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:12,653 INFO L87 Difference]: Start difference. First operand 6209 states and 34110 transitions. Second operand 13 states. [2020-01-16 18:00:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:12,918 INFO L93 Difference]: Finished difference Result 11852 states and 58467 transitions. [2020-01-16 18:00:12,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:12,918 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:12,948 INFO L225 Difference]: With dead ends: 11852 [2020-01-16 18:00:12,949 INFO L226 Difference]: Without dead ends: 11828 [2020-01-16 18:00:12,949 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11828 states. [2020-01-16 18:00:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11828 to 6216. [2020-01-16 18:00:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 18:00:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34122 transitions. [2020-01-16 18:00:13,589 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34122 transitions. Word has length 34 [2020-01-16 18:00:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:13,589 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34122 transitions. [2020-01-16 18:00:13,589 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34122 transitions. [2020-01-16 18:00:13,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:13,600 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:13,600 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:13,600 INFO L426 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:13,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:13,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1336656634, now seen corresponding path program 250 times [2020-01-16 18:00:13,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:13,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788687665] [2020-01-16 18:00:13,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:14,141 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:00:14,290 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 18:00:14,442 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 18:00:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:14,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788687665] [2020-01-16 18:00:14,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:14,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:14,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468919109] [2020-01-16 18:00:14,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:14,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:14,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:14,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:14,454 INFO L87 Difference]: Start difference. First operand 6216 states and 34122 transitions. Second operand 13 states. [2020-01-16 18:00:14,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:14,847 INFO L93 Difference]: Finished difference Result 11846 states and 58449 transitions. [2020-01-16 18:00:14,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:14,848 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:14,876 INFO L225 Difference]: With dead ends: 11846 [2020-01-16 18:00:14,876 INFO L226 Difference]: Without dead ends: 11821 [2020-01-16 18:00:14,877 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:15,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11821 states. [2020-01-16 18:00:15,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11821 to 6209. [2020-01-16 18:00:15,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-01-16 18:00:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 34103 transitions. [2020-01-16 18:00:15,514 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 34103 transitions. Word has length 34 [2020-01-16 18:00:15,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:15,515 INFO L478 AbstractCegarLoop]: Abstraction has 6209 states and 34103 transitions. [2020-01-16 18:00:15,515 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 34103 transitions. [2020-01-16 18:00:15,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:15,525 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:15,526 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:15,526 INFO L426 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:15,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1213946656, now seen corresponding path program 251 times [2020-01-16 18:00:15,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:15,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445312026] [2020-01-16 18:00:15,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:16,190 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 18:00:16,342 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 18:00:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:16,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445312026] [2020-01-16 18:00:16,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:16,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:16,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513371954] [2020-01-16 18:00:16,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:16,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:16,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:16,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:16,354 INFO L87 Difference]: Start difference. First operand 6209 states and 34103 transitions. Second operand 13 states. [2020-01-16 18:00:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:16,662 INFO L93 Difference]: Finished difference Result 11843 states and 58444 transitions. [2020-01-16 18:00:16,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:16,662 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:16,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:16,690 INFO L225 Difference]: With dead ends: 11843 [2020-01-16 18:00:16,691 INFO L226 Difference]: Without dead ends: 11825 [2020-01-16 18:00:16,691 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11825 states. [2020-01-16 18:00:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11825 to 6215. [2020-01-16 18:00:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-01-16 18:00:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 34114 transitions. [2020-01-16 18:00:17,322 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 34114 transitions. Word has length 34 [2020-01-16 18:00:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:17,322 INFO L478 AbstractCegarLoop]: Abstraction has 6215 states and 34114 transitions. [2020-01-16 18:00:17,322 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 34114 transitions. [2020-01-16 18:00:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:17,333 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:17,333 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:17,334 INFO L426 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:17,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1638257892, now seen corresponding path program 252 times [2020-01-16 18:00:17,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:17,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288918238] [2020-01-16 18:00:17,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:17,993 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-01-16 18:00:18,140 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-01-16 18:00:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:18,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288918238] [2020-01-16 18:00:18,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:18,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:18,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224649053] [2020-01-16 18:00:18,152 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:18,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:18,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:18,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:18,152 INFO L87 Difference]: Start difference. First operand 6215 states and 34114 transitions. Second operand 13 states. [2020-01-16 18:00:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:18,466 INFO L93 Difference]: Finished difference Result 11847 states and 58446 transitions. [2020-01-16 18:00:18,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:18,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:18,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:18,499 INFO L225 Difference]: With dead ends: 11847 [2020-01-16 18:00:18,500 INFO L226 Difference]: Without dead ends: 11811 [2020-01-16 18:00:18,500 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11811 states. [2020-01-16 18:00:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11811 to 6201. [2020-01-16 18:00:19,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6201 states. [2020-01-16 18:00:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6201 states to 6201 states and 34082 transitions. [2020-01-16 18:00:19,225 INFO L78 Accepts]: Start accepts. Automaton has 6201 states and 34082 transitions. Word has length 34 [2020-01-16 18:00:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:19,225 INFO L478 AbstractCegarLoop]: Abstraction has 6201 states and 34082 transitions. [2020-01-16 18:00:19,225 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 6201 states and 34082 transitions. [2020-01-16 18:00:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:19,236 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:19,236 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:19,236 INFO L426 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1973351904, now seen corresponding path program 253 times [2020-01-16 18:00:19,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:19,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074032702] [2020-01-16 18:00:19,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:19,783 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:00:19,924 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 18:00:20,074 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 18:00:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:20,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074032702] [2020-01-16 18:00:20,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:20,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:20,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649884099] [2020-01-16 18:00:20,086 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:20,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:20,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:20,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:20,087 INFO L87 Difference]: Start difference. First operand 6201 states and 34082 transitions. Second operand 13 states. [2020-01-16 18:00:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:20,502 INFO L93 Difference]: Finished difference Result 11841 states and 58445 transitions. [2020-01-16 18:00:20,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:20,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:20,531 INFO L225 Difference]: With dead ends: 11841 [2020-01-16 18:00:20,532 INFO L226 Difference]: Without dead ends: 11822 [2020-01-16 18:00:20,532 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2020-01-16 18:00:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 6216. [2020-01-16 18:00:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-01-16 18:00:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 34123 transitions. [2020-01-16 18:00:21,163 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 34123 transitions. Word has length 34 [2020-01-16 18:00:21,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:21,163 INFO L478 AbstractCegarLoop]: Abstraction has 6216 states and 34123 transitions. [2020-01-16 18:00:21,163 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 34123 transitions. [2020-01-16 18:00:21,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:21,174 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:21,174 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:21,174 INFO L426 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:21,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:21,175 INFO L82 PathProgramCache]: Analyzing trace with hash 988415620, now seen corresponding path program 254 times [2020-01-16 18:00:21,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:21,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757707463] [2020-01-16 18:00:21,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:21,719 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:00:21,870 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 18:00:22,020 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 18:00:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:22,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757707463] [2020-01-16 18:00:22,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:22,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:22,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232016958] [2020-01-16 18:00:22,031 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:22,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:22,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:22,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:22,032 INFO L87 Difference]: Start difference. First operand 6216 states and 34123 transitions. Second operand 13 states. [2020-01-16 18:00:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:22,405 INFO L93 Difference]: Finished difference Result 11846 states and 58447 transitions. [2020-01-16 18:00:22,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:22,405 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:22,434 INFO L225 Difference]: With dead ends: 11846 [2020-01-16 18:00:22,435 INFO L226 Difference]: Without dead ends: 11814 [2020-01-16 18:00:22,435 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2020-01-16 18:00:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 6208. [2020-01-16 18:00:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6208 states. [2020-01-16 18:00:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 34101 transitions. [2020-01-16 18:00:23,070 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 34101 transitions. Word has length 34 [2020-01-16 18:00:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:23,070 INFO L478 AbstractCegarLoop]: Abstraction has 6208 states and 34101 transitions. [2020-01-16 18:00:23,070 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 34101 transitions. [2020-01-16 18:00:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:23,081 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:23,081 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:23,081 INFO L426 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:23,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:23,081 INFO L82 PathProgramCache]: Analyzing trace with hash -308504958, now seen corresponding path program 255 times [2020-01-16 18:00:23,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:23,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984802070] [2020-01-16 18:00:23,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:23,776 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-01-16 18:00:23,923 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 18:00:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:23,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984802070] [2020-01-16 18:00:23,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:23,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:23,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100006499] [2020-01-16 18:00:23,934 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:23,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:23,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:23,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:23,935 INFO L87 Difference]: Start difference. First operand 6208 states and 34101 transitions. Second operand 13 states. [2020-01-16 18:00:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:24,266 INFO L93 Difference]: Finished difference Result 11833 states and 58422 transitions. [2020-01-16 18:00:24,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:24,266 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:24,296 INFO L225 Difference]: With dead ends: 11833 [2020-01-16 18:00:24,296 INFO L226 Difference]: Without dead ends: 11814 [2020-01-16 18:00:24,296 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:24,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2020-01-16 18:00:24,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 6214. [2020-01-16 18:00:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-01-16 18:00:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 34112 transitions. [2020-01-16 18:00:24,929 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 34112 transitions. Word has length 34 [2020-01-16 18:00:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:24,930 INFO L478 AbstractCegarLoop]: Abstraction has 6214 states and 34112 transitions. [2020-01-16 18:00:24,930 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 34112 transitions. [2020-01-16 18:00:24,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:24,941 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:24,941 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:24,941 INFO L426 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:24,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:24,941 INFO L82 PathProgramCache]: Analyzing trace with hash 300145704, now seen corresponding path program 256 times [2020-01-16 18:00:24,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:24,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522317141] [2020-01-16 18:00:24,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:00:25,464 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 29 [2020-01-16 18:00:25,587 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-01-16 18:00:25,731 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 18:00:25,881 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-01-16 18:00:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:00:25,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522317141] [2020-01-16 18:00:25,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:00:25,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-01-16 18:00:25,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642083935] [2020-01-16 18:00:25,893 INFO L458 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-01-16 18:00:25,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:00:25,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-01-16 18:00:25,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-01-16 18:00:25,894 INFO L87 Difference]: Start difference. First operand 6214 states and 34112 transitions. Second operand 13 states. [2020-01-16 18:00:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:00:26,192 INFO L93 Difference]: Finished difference Result 11832 states and 58414 transitions. [2020-01-16 18:00:26,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 18:00:26,193 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-01-16 18:00:26,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:00:26,222 INFO L225 Difference]: With dead ends: 11832 [2020-01-16 18:00:26,223 INFO L226 Difference]: Without dead ends: 11808 [2020-01-16 18:00:26,223 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-01-16 18:00:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11808 states. [2020-01-16 18:00:26,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11808 to 6208. [2020-01-16 18:00:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6208 states. [2020-01-16 18:00:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 34095 transitions. [2020-01-16 18:00:26,855 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 34095 transitions. Word has length 34 [2020-01-16 18:00:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:00:26,856 INFO L478 AbstractCegarLoop]: Abstraction has 6208 states and 34095 transitions. [2020-01-16 18:00:26,856 INFO L479 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-01-16 18:00:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 34095 transitions. [2020-01-16 18:00:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-01-16 18:00:26,866 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:00:26,866 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:00:26,867 INFO L426 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:00:26,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:00:26,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1618250338, now seen corresponding path program 257 times [2020-01-16 18:00:26,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:00:26,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962421970] [2020-01-16 18:00:26,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:00:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2020-01-16 18:00:27,385 WARN L209 SmtUtils]: Removed 19 from assertion stack [2020-01-16 18:00:27,385 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 18:00:27,388 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 18:00:27,388 INFO L202 PluginConnector]: Adding new model example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 06:00:27 BasicIcfg [2020-01-16 18:00:27,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 18:00:27,390 INFO L168 Benchmark]: Toolchain (without parser) took 745180.46 ms. Allocated memory was 146.3 MB in the beginning and 4.1 GB in the end (delta: 4.0 GB). Free memory was 120.1 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2020-01-16 18:00:27,390 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 18:00:27,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.11 ms. Allocated memory is still 146.3 MB. Free memory was 119.9 MB in the beginning and 118.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 18:00:27,390 INFO L168 Benchmark]: Boogie Preprocessor took 21.50 ms. Allocated memory is still 146.3 MB. Free memory was 118.3 MB in the beginning and 117.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-01-16 18:00:27,390 INFO L168 Benchmark]: RCFGBuilder took 419.06 ms. Allocated memory is still 146.3 MB. Free memory was 117.0 MB in the beginning and 102.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-01-16 18:00:27,390 INFO L168 Benchmark]: TraceAbstraction took 744685.39 ms. Allocated memory was 146.3 MB in the beginning and 4.1 GB in the end (delta: 4.0 GB). Free memory was 101.6 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2020-01-16 18:00:27,391 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.11 ms. Allocated memory is still 146.3 MB. Free memory was 119.9 MB in the beginning and 118.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.50 ms. Allocated memory is still 146.3 MB. Free memory was 118.3 MB in the beginning and 117.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.06 ms. Allocated memory is still 146.3 MB. Free memory was 117.0 MB in the beginning and 102.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 744685.39 ms. Allocated memory was 146.3 MB in the beginning and 4.1 GB in the end (delta: 4.0 GB). Free memory was 101.6 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 20.0s, 92 ProgramPointsBefore, 79 ProgramPointsAfterwards, 168 TransitionsBefore, 156 TransitionsAfterwards, 5060 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1320 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1375 CheckedPairsTotal, 12 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 35]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 35). Cancelled while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 59 for 70ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 744.3s, OverallIterations: 267, TraceHistogramMax: 1, AutomataDifference: 123.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 124.0s, HoareTripleCheckerStatistics: 48889 SDtfs, 74376 SDslu, 140512 SDs, 0 SdLazy, 37147 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3358 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 3082 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 239.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179196occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 254.1s AutomataMinimizationTime, 266 MinimizatonAttempts, 1442318 StatesRemovedByMinimization, 256 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 223.8s InterpolantComputationTime, 9044 NumberOfCodeBlocks, 9044 NumberOfCodeBlocksAsserted, 266 NumberOfCheckSat, 8778 ConstructedInterpolants, 0 QuantifiedInterpolants, 12500829 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 266 InterpolantComputations, 266 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown