/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 01:58:35,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 01:58:35,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 01:58:35,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 01:58:35,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 01:58:35,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 01:58:35,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 01:58:35,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-05-22 01:58:35,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 01:58:35,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 01:58:35,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 01:58:35,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 01:58:35,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 01:58:35,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 01:58:35,898 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 01:58:35,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 01:58:35,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 01:58:35,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 01:58:35,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 01:58:35,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 01:58:35,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 01:58:35,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 01:58:35,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:58:35,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 01:58:35,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 01:58:35,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 01:58:35,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 01:58:35,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 01:58:35,901 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 01:58:35,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 01:58:35,901 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 01:58:35,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 01:58:36,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 01:58:36,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 01:58:36,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 01:58:36,154 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-22 01:58:36,155 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-22 01:58:36,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2021-05-22 01:58:36,156 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2021-05-22 01:58:36,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 01:58:36,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-22 01:58:36,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 01:58:36,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 01:58:36,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 01:58:36,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/1) ... [2021-05-22 01:58:36,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/1) ... [2021-05-22 01:58:36,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 01:58:36,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 01:58:36,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 01:58:36,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 01:58:36,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/1) ... [2021-05-22 01:58:36,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/1) ... [2021-05-22 01:58:36,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/1) ... [2021-05-22 01:58:36,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/1) ... [2021-05-22 01:58:36,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/1) ... [2021-05-22 01:58:36,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/1) ... [2021-05-22 01:58:36,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/1) ... [2021-05-22 01:58:36,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 01:58:36,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 01:58:36,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 01:58:36,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 01:58:36,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (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 [2021-05-22 01:58:36,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-05-22 01:58:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-05-22 01:58:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-05-22 01:58:36,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-05-22 01:58:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-05-22 01:58:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-05-22 01:58:36,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-05-22 01:58:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-05-22 01:58:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-05-22 01:58:36,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-05-22 01:58:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-05-22 01:58:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-05-22 01:58:36,630 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-05-22 01:58:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-05-22 01:58:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-05-22 01:58:36,630 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-22 01:58:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 01:58:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 01:58:36,630 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-05-22 01:58:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-05-22 01:58:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-05-22 01:58:36,631 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-05-22 01:58:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-05-22 01:58:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-05-22 01:58:36,632 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-05-22 01:58:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-05-22 01:58:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-05-22 01:58:36,633 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-05-22 01:58:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-05-22 01:58:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-05-22 01:58:36,634 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 01:58:36,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 01:58:36,795 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-22 01:58:36,796 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:58:36 BoogieIcfgContainer [2021-05-22 01:58:36,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 01:58:36,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 01:58:36,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 01:58:36,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 01:58:36,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:58:36" (1/2) ... [2021-05-22 01:58:36,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d025cb0 and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:58:36, skipping insertion in model container [2021-05-22 01:58:36,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:58:36" (2/2) ... [2021-05-22 01:58:36,800 INFO L111 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2021-05-22 01:58:36,803 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 01:58:36,804 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 01:58:36,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 01:58:36,805 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 01:58:36,929 INFO L149 ThreadInstanceAdder]: Constructed 81 joinOtherThreadTransitions. [2021-05-22 01:58:36,942 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:58:36,953 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:58:36,954 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:58:36,954 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:58:36,954 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:58:36,954 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:58:36,954 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:58:36,954 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:58:36,954 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 01:58:36,961 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 120 transitions, 528 flow [2021-05-22 02:01:18,265 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 271988 states, 271986 states have (on average 6.722860735479032) internal successors, (1828524), 271987 states have internal predecessors, (1828524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:18,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 271988 states, 271986 states have (on average 6.722860735479032) internal successors, (1828524), 271987 states have internal predecessors, (1828524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:01:20,762 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:20,763 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:20,763 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash -579927567, now seen corresponding path program 1 times [2021-05-22 02:01:20,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:20,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700429480] [2021-05-22 02:01:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:20,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:20,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700429480] [2021-05-22 02:01:20,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700429480] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:20,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:20,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 02:01:20,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410195679] [2021-05-22 02:01:20,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:01:20,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:20,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:01:20,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:01:21,295 INFO L87 Difference]: Start difference. First operand has 271988 states, 271986 states have (on average 6.722860735479032) internal successors, (1828524), 271987 states have internal predecessors, (1828524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:24,557 INFO L93 Difference]: Finished difference Result 247931 states and 1629507 transitions. [2021-05-22 02:01:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:01:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:01:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:27,361 INFO L225 Difference]: With dead ends: 247931 [2021-05-22 02:01:27,361 INFO L226 Difference]: Without dead ends: 247929 [2021-05-22 02:01:27,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:01:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247929 states. [2021-05-22 02:01:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247929 to 247929. [2021-05-22 02:01:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247929 states, 247928 states have (on average 6.572492820496273) internal successors, (1629505), 247928 states have internal predecessors, (1629505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247929 states to 247929 states and 1629505 transitions. [2021-05-22 02:01:52,894 INFO L78 Accepts]: Start accepts. Automaton has 247929 states and 1629505 transitions. Word has length 37 [2021-05-22 02:01:52,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:52,895 INFO L482 AbstractCegarLoop]: Abstraction has 247929 states and 1629505 transitions. [2021-05-22 02:01:52,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 247929 states and 1629505 transitions. [2021-05-22 02:01:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:01:54,391 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:54,391 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:54,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 02:01:54,392 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:54,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash 65929237, now seen corresponding path program 1 times [2021-05-22 02:01:54,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:54,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437011254] [2021-05-22 02:01:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:54,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:54,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437011254] [2021-05-22 02:01:54,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437011254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:54,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:54,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 02:01:54,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847811455] [2021-05-22 02:01:54,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:01:54,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:54,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:01:54,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:01:54,455 INFO L87 Difference]: Start difference. First operand 247929 states and 1629505 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:56,991 INFO L93 Difference]: Finished difference Result 205647 states and 1312390 transitions. [2021-05-22 02:01:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:01:56,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:01:56,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:58,138 INFO L225 Difference]: With dead ends: 205647 [2021-05-22 02:01:58,139 INFO L226 Difference]: Without dead ends: 205647 [2021-05-22 02:01:58,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:02:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205647 states. [2021-05-22 02:02:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205647 to 205647. [2021-05-22 02:02:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205647 states, 205646 states have (on average 6.381792011514934) internal successors, (1312390), 205646 states have internal predecessors, (1312390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205647 states to 205647 states and 1312390 transitions. [2021-05-22 02:02:18,316 INFO L78 Accepts]: Start accepts. Automaton has 205647 states and 1312390 transitions. Word has length 37 [2021-05-22 02:02:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:18,316 INFO L482 AbstractCegarLoop]: Abstraction has 205647 states and 1312390 transitions. [2021-05-22 02:02:18,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:18,316 INFO L276 IsEmpty]: Start isEmpty. Operand 205647 states and 1312390 transitions. [2021-05-22 02:02:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:02:20,230 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:20,230 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:20,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 02:02:20,230 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:20,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:20,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1044527641, now seen corresponding path program 1 times [2021-05-22 02:02:20,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:20,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707943787] [2021-05-22 02:02:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:20,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:20,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707943787] [2021-05-22 02:02:20,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707943787] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:20,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:20,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 02:02:20,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434116778] [2021-05-22 02:02:20,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:02:20,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:20,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:02:20,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:02:20,316 INFO L87 Difference]: Start difference. First operand 205647 states and 1312390 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:22,805 INFO L93 Difference]: Finished difference Result 199086 states and 1257715 transitions. [2021-05-22 02:02:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:02:22,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:02:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:25,249 INFO L225 Difference]: With dead ends: 199086 [2021-05-22 02:02:25,249 INFO L226 Difference]: Without dead ends: 199086 [2021-05-22 02:02:25,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:02:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199086 states. [2021-05-22 02:02:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199086 to 199086. [2021-05-22 02:02:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199086 states, 199085 states have (on average 6.317477459376648) internal successors, (1257715), 199085 states have internal predecessors, (1257715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199086 states to 199086 states and 1257715 transitions. [2021-05-22 02:02:44,481 INFO L78 Accepts]: Start accepts. Automaton has 199086 states and 1257715 transitions. Word has length 37 [2021-05-22 02:02:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:44,482 INFO L482 AbstractCegarLoop]: Abstraction has 199086 states and 1257715 transitions. [2021-05-22 02:02:44,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 199086 states and 1257715 transitions. [2021-05-22 02:02:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:02:45,197 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:45,197 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:45,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 02:02:45,197 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:45,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1663480717, now seen corresponding path program 1 times [2021-05-22 02:02:45,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:45,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408507974] [2021-05-22 02:02:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:45,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:45,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408507974] [2021-05-22 02:02:45,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408507974] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:45,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:45,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 02:02:45,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041579986] [2021-05-22 02:02:45,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:02:45,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:45,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:02:45,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:02:45,221 INFO L87 Difference]: Start difference. First operand 199086 states and 1257715 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:46,842 INFO L93 Difference]: Finished difference Result 144816 states and 896941 transitions. [2021-05-22 02:02:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:02:46,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:02:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:47,783 INFO L225 Difference]: With dead ends: 144816 [2021-05-22 02:02:47,784 INFO L226 Difference]: Without dead ends: 144816 [2021-05-22 02:02:47,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:02:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144816 states. [2021-05-22 02:03:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144816 to 144816. [2021-05-22 02:03:00,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144816 states, 144815 states have (on average 6.1937023098435935) internal successors, (896941), 144815 states have internal predecessors, (896941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144816 states to 144816 states and 896941 transitions. [2021-05-22 02:03:02,041 INFO L78 Accepts]: Start accepts. Automaton has 144816 states and 896941 transitions. Word has length 37 [2021-05-22 02:03:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:02,041 INFO L482 AbstractCegarLoop]: Abstraction has 144816 states and 896941 transitions. [2021-05-22 02:03:02,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 144816 states and 896941 transitions. [2021-05-22 02:03:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:03:03,111 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:03,111 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:03,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-22 02:03:03,112 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:03,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:03,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1563653977, now seen corresponding path program 1 times [2021-05-22 02:03:03,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:03,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423622105] [2021-05-22 02:03:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:03,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:03,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423622105] [2021-05-22 02:03:03,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423622105] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:03,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:03,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 02:03:03,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910039847] [2021-05-22 02:03:03,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:03:03,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:03,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:03:03,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:03:03,169 INFO L87 Difference]: Start difference. First operand 144816 states and 896941 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:03,897 INFO L93 Difference]: Finished difference Result 107880 states and 652645 transitions. [2021-05-22 02:03:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:03:03,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:03:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:04,824 INFO L225 Difference]: With dead ends: 107880 [2021-05-22 02:03:04,824 INFO L226 Difference]: Without dead ends: 107880 [2021-05-22 02:03:04,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:03:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107880 states. [2021-05-22 02:03:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107880 to 107880. [2021-05-22 02:03:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107880 states, 107879 states have (on average 6.049787261654261) internal successors, (652645), 107879 states have internal predecessors, (652645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107880 states to 107880 states and 652645 transitions. [2021-05-22 02:03:15,879 INFO L78 Accepts]: Start accepts. Automaton has 107880 states and 652645 transitions. Word has length 37 [2021-05-22 02:03:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:15,880 INFO L482 AbstractCegarLoop]: Abstraction has 107880 states and 652645 transitions. [2021-05-22 02:03:15,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,880 INFO L276 IsEmpty]: Start isEmpty. Operand 107880 states and 652645 transitions. [2021-05-22 02:03:16,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:03:16,149 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:16,149 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:16,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 02:03:16,149 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:16,150 INFO L82 PathProgramCache]: Analyzing trace with hash 673733085, now seen corresponding path program 1 times [2021-05-22 02:03:16,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:16,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692541816] [2021-05-22 02:03:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:16,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:16,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692541816] [2021-05-22 02:03:16,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692541816] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:16,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:16,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 02:03:16,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452239389] [2021-05-22 02:03:16,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:03:16,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:16,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:03:16,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:03:16,167 INFO L87 Difference]: Start difference. First operand 107880 states and 652645 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:17,171 INFO L93 Difference]: Finished difference Result 76074 states and 457273 transitions. [2021-05-22 02:03:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:03:17,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:03:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:17,478 INFO L225 Difference]: With dead ends: 76074 [2021-05-22 02:03:17,478 INFO L226 Difference]: Without dead ends: 76074 [2021-05-22 02:03:17,479 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:03:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76074 states. [2021-05-22 02:03:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76074 to 76074. [2021-05-22 02:03:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76074 states, 76073 states have (on average 6.010976299081146) internal successors, (457273), 76073 states have internal predecessors, (457273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76074 states to 76074 states and 457273 transitions. [2021-05-22 02:03:25,901 INFO L78 Accepts]: Start accepts. Automaton has 76074 states and 457273 transitions. Word has length 37 [2021-05-22 02:03:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:25,901 INFO L482 AbstractCegarLoop]: Abstraction has 76074 states and 457273 transitions. [2021-05-22 02:03:25,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 76074 states and 457273 transitions. [2021-05-22 02:03:26,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:03:26,084 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:26,084 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:26,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-22 02:03:26,084 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:26,085 INFO L82 PathProgramCache]: Analyzing trace with hash -295306595, now seen corresponding path program 1 times [2021-05-22 02:03:26,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:26,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375062155] [2021-05-22 02:03:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:26,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:26,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375062155] [2021-05-22 02:03:26,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375062155] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:26,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:26,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 02:03:26,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855359157] [2021-05-22 02:03:26,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:03:26,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:26,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:03:26,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:03:26,100 INFO L87 Difference]: Start difference. First operand 76074 states and 457273 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:26,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:26,934 INFO L93 Difference]: Finished difference Result 54114 states and 324757 transitions. [2021-05-22 02:03:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:03:26,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:03:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:27,154 INFO L225 Difference]: With dead ends: 54114 [2021-05-22 02:03:27,154 INFO L226 Difference]: Without dead ends: 54114 [2021-05-22 02:03:27,155 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:03:32,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54114 states. [2021-05-22 02:03:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54114 to 54114. [2021-05-22 02:03:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54114 states, 54113 states have (on average 6.001459907970358) internal successors, (324757), 54113 states have internal predecessors, (324757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54114 states to 54114 states and 324757 transitions. [2021-05-22 02:03:34,127 INFO L78 Accepts]: Start accepts. Automaton has 54114 states and 324757 transitions. Word has length 37 [2021-05-22 02:03:34,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:34,127 INFO L482 AbstractCegarLoop]: Abstraction has 54114 states and 324757 transitions. [2021-05-22 02:03:34,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand 54114 states and 324757 transitions. [2021-05-22 02:03:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:03:34,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:34,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:34,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-22 02:03:34,252 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:34,253 INFO L82 PathProgramCache]: Analyzing trace with hash 857199773, now seen corresponding path program 1 times [2021-05-22 02:03:34,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:34,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542623428] [2021-05-22 02:03:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:34,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:34,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542623428] [2021-05-22 02:03:34,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542623428] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:34,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:34,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:03:34,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652740619] [2021-05-22 02:03:34,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:03:34,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:34,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:03:34,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:34,579 INFO L87 Difference]: Start difference. First operand 54114 states and 324757 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:36,149 INFO L93 Difference]: Finished difference Result 141637 states and 796695 transitions. [2021-05-22 02:03:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:03:36,150 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:03:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:37,089 INFO L225 Difference]: With dead ends: 141637 [2021-05-22 02:03:37,089 INFO L226 Difference]: Without dead ends: 138843 [2021-05-22 02:03:37,090 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 214.2ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:03:44,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138843 states. [2021-05-22 02:03:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138843 to 55328. [2021-05-22 02:03:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55328 states, 55327 states have (on average 5.981690675438755) internal successors, (330949), 55327 states have internal predecessors, (330949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55328 states to 55328 states and 330949 transitions. [2021-05-22 02:03:46,247 INFO L78 Accepts]: Start accepts. Automaton has 55328 states and 330949 transitions. Word has length 37 [2021-05-22 02:03:46,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:46,247 INFO L482 AbstractCegarLoop]: Abstraction has 55328 states and 330949 transitions. [2021-05-22 02:03:46,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 55328 states and 330949 transitions. [2021-05-22 02:03:46,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:03:46,380 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:46,380 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:46,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-22 02:03:46,380 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:46,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:46,381 INFO L82 PathProgramCache]: Analyzing trace with hash -732734977, now seen corresponding path program 2 times [2021-05-22 02:03:46,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:46,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462539219] [2021-05-22 02:03:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:46,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:46,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462539219] [2021-05-22 02:03:46,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462539219] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:46,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:46,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:03:46,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298844033] [2021-05-22 02:03:46,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:03:46,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:46,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:03:46,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:46,631 INFO L87 Difference]: Start difference. First operand 55328 states and 330949 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:47,523 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-05-22 02:03:48,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:48,131 INFO L93 Difference]: Finished difference Result 141875 states and 797558 transitions. [2021-05-22 02:03:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:03:48,134 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:03:48,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:49,327 INFO L225 Difference]: With dead ends: 141875 [2021-05-22 02:03:49,328 INFO L226 Difference]: Without dead ends: 138332 [2021-05-22 02:03:49,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 306.0ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:03:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138332 states. [2021-05-22 02:03:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138332 to 54817. [2021-05-22 02:03:58,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54817 states, 54816 states have (on average 5.990787361354349) internal successors, (328391), 54816 states have internal predecessors, (328391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54817 states to 54817 states and 328391 transitions. [2021-05-22 02:03:58,627 INFO L78 Accepts]: Start accepts. Automaton has 54817 states and 328391 transitions. Word has length 37 [2021-05-22 02:03:58,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:58,627 INFO L482 AbstractCegarLoop]: Abstraction has 54817 states and 328391 transitions. [2021-05-22 02:03:58,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:58,628 INFO L276 IsEmpty]: Start isEmpty. Operand 54817 states and 328391 transitions. [2021-05-22 02:03:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:03:58,772 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:58,772 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:58,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-22 02:03:58,772 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:58,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:58,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1938262399, now seen corresponding path program 3 times [2021-05-22 02:03:58,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:58,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180352528] [2021-05-22 02:03:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:59,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:59,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180352528] [2021-05-22 02:03:59,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180352528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:59,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:59,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:03:59,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746756732] [2021-05-22 02:03:59,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:03:59,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:59,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:03:59,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:59,034 INFO L87 Difference]: Start difference. First operand 54817 states and 328391 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:00,450 INFO L93 Difference]: Finished difference Result 141494 states and 795819 transitions. [2021-05-22 02:04:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:04:00,451 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:04:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:00,977 INFO L225 Difference]: With dead ends: 141494 [2021-05-22 02:04:00,978 INFO L226 Difference]: Without dead ends: 138700 [2021-05-22 02:04:00,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 205.0ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:04:07,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138700 states. [2021-05-22 02:04:09,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138700 to 55199. [2021-05-22 02:04:09,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55199 states, 55198 states have (on average 5.980579006485742) internal successors, (330116), 55198 states have internal predecessors, (330116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55199 states to 55199 states and 330116 transitions. [2021-05-22 02:04:09,750 INFO L78 Accepts]: Start accepts. Automaton has 55199 states and 330116 transitions. Word has length 37 [2021-05-22 02:04:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:09,751 INFO L482 AbstractCegarLoop]: Abstraction has 55199 states and 330116 transitions. [2021-05-22 02:04:09,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:09,751 INFO L276 IsEmpty]: Start isEmpty. Operand 55199 states and 330116 transitions. [2021-05-22 02:04:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:04:09,880 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:09,880 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:09,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-22 02:04:09,880 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:09,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1348406913, now seen corresponding path program 4 times [2021-05-22 02:04:09,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:09,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124029147] [2021-05-22 02:04:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:10,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:10,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124029147] [2021-05-22 02:04:10,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124029147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:10,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:10,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:04:10,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255537051] [2021-05-22 02:04:10,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:04:10,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:10,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:04:10,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:10,098 INFO L87 Difference]: Start difference. First operand 55199 states and 330116 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:11,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:11,450 INFO L93 Difference]: Finished difference Result 141718 states and 796641 transitions. [2021-05-22 02:04:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:04:11,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:04:11,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:12,540 INFO L225 Difference]: With dead ends: 141718 [2021-05-22 02:04:12,540 INFO L226 Difference]: Without dead ends: 138318 [2021-05-22 02:04:12,541 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 217.8ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:04:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138318 states. [2021-05-22 02:04:21,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138318 to 54817. [2021-05-22 02:04:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54817 states, 54816 states have (on average 5.9873029772329245) internal successors, (328200), 54816 states have internal predecessors, (328200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54817 states to 54817 states and 328200 transitions. [2021-05-22 02:04:21,780 INFO L78 Accepts]: Start accepts. Automaton has 54817 states and 328200 transitions. Word has length 37 [2021-05-22 02:04:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:21,780 INFO L482 AbstractCegarLoop]: Abstraction has 54817 states and 328200 transitions. [2021-05-22 02:04:21,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 54817 states and 328200 transitions. [2021-05-22 02:04:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:04:21,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:21,913 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:21,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-22 02:04:21,913 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:21,913 INFO L82 PathProgramCache]: Analyzing trace with hash -939542943, now seen corresponding path program 5 times [2021-05-22 02:04:21,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:21,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560735805] [2021-05-22 02:04:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:22,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:22,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560735805] [2021-05-22 02:04:22,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560735805] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:22,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:22,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:04:22,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594682965] [2021-05-22 02:04:22,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:04:22,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:22,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:04:22,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:22,135 INFO L87 Difference]: Start difference. First operand 54817 states and 328200 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:23,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:23,520 INFO L93 Difference]: Finished difference Result 142083 states and 798781 transitions. [2021-05-22 02:04:23,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:04:23,520 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:04:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:24,069 INFO L225 Difference]: With dead ends: 142083 [2021-05-22 02:04:24,069 INFO L226 Difference]: Without dead ends: 139051 [2021-05-22 02:04:24,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 230.4ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:04:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139051 states. [2021-05-22 02:04:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139051 to 55312. [2021-05-22 02:04:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55312 states, 55311 states have (on average 5.974815136229683) internal successors, (330473), 55311 states have internal predecessors, (330473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55312 states to 55312 states and 330473 transitions. [2021-05-22 02:04:32,953 INFO L78 Accepts]: Start accepts. Automaton has 55312 states and 330473 transitions. Word has length 37 [2021-05-22 02:04:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:32,954 INFO L482 AbstractCegarLoop]: Abstraction has 55312 states and 330473 transitions. [2021-05-22 02:04:32,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 55312 states and 330473 transitions. [2021-05-22 02:04:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:04:33,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:33,090 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:33,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-22 02:04:33,502 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:33,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1312087359, now seen corresponding path program 6 times [2021-05-22 02:04:33,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:33,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722673430] [2021-05-22 02:04:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:33,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:33,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722673430] [2021-05-22 02:04:33,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722673430] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:33,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:33,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:04:33,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817200288] [2021-05-22 02:04:33,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:04:33,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:33,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:04:33,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:33,841 INFO L87 Difference]: Start difference. First operand 55312 states and 330473 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:35,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:35,295 INFO L93 Difference]: Finished difference Result 142069 states and 798244 transitions. [2021-05-22 02:04:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:04:35,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:04:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:35,858 INFO L225 Difference]: With dead ends: 142069 [2021-05-22 02:04:35,859 INFO L226 Difference]: Without dead ends: 138237 [2021-05-22 02:04:35,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 294.4ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:04:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138237 states. [2021-05-22 02:04:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138237 to 54498. [2021-05-22 02:04:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54498 states, 54497 states have (on average 5.995963080536543) internal successors, (326762), 54497 states have internal predecessors, (326762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54498 states to 54498 states and 326762 transitions. [2021-05-22 02:04:44,891 INFO L78 Accepts]: Start accepts. Automaton has 54498 states and 326762 transitions. Word has length 37 [2021-05-22 02:04:44,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:44,891 INFO L482 AbstractCegarLoop]: Abstraction has 54498 states and 326762 transitions. [2021-05-22 02:04:44,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 54498 states and 326762 transitions. [2021-05-22 02:04:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:04:45,022 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:45,022 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:45,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-22 02:04:45,022 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:45,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:45,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1683646941, now seen corresponding path program 7 times [2021-05-22 02:04:45,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:45,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766940557] [2021-05-22 02:04:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:45,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:45,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766940557] [2021-05-22 02:04:45,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766940557] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:45,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:45,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:04:45,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132720338] [2021-05-22 02:04:45,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:04:45,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:45,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:04:45,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:45,227 INFO L87 Difference]: Start difference. First operand 54498 states and 326762 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:46,579 INFO L93 Difference]: Finished difference Result 141534 states and 796137 transitions. [2021-05-22 02:04:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:04:46,580 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:04:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:47,120 INFO L225 Difference]: With dead ends: 141534 [2021-05-22 02:04:47,120 INFO L226 Difference]: Without dead ends: 138740 [2021-05-22 02:04:47,120 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 187.0ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:04:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138740 states. [2021-05-22 02:04:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138740 to 55263. [2021-05-22 02:04:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55263 states, 55262 states have (on average 5.981144366834353) internal successors, (330530), 55262 states have internal predecessors, (330530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55263 states to 55263 states and 330530 transitions. [2021-05-22 02:04:56,227 INFO L78 Accepts]: Start accepts. Automaton has 55263 states and 330530 transitions. Word has length 37 [2021-05-22 02:04:56,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:56,227 INFO L482 AbstractCegarLoop]: Abstraction has 55263 states and 330530 transitions. [2021-05-22 02:04:56,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:56,227 INFO L276 IsEmpty]: Start isEmpty. Operand 55263 states and 330530 transitions. [2021-05-22 02:04:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:04:56,801 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:56,801 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:56,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-22 02:04:56,802 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:56,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:56,802 INFO L82 PathProgramCache]: Analyzing trace with hash 93712191, now seen corresponding path program 8 times [2021-05-22 02:04:56,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:56,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933081857] [2021-05-22 02:04:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:57,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:57,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933081857] [2021-05-22 02:04:57,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933081857] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:57,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:57,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:04:57,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594888146] [2021-05-22 02:04:57,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:04:57,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:57,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:04:57,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:57,123 INFO L87 Difference]: Start difference. First operand 55263 states and 330530 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:58,532 INFO L93 Difference]: Finished difference Result 141772 states and 797000 transitions. [2021-05-22 02:04:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:04:58,533 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:04:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:59,090 INFO L225 Difference]: With dead ends: 141772 [2021-05-22 02:04:59,090 INFO L226 Difference]: Without dead ends: 138229 [2021-05-22 02:04:59,090 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 304.3ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:05:06,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138229 states. [2021-05-22 02:05:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138229 to 54752. [2021-05-22 02:05:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54752 states, 54751 states have (on average 5.990265017990539) internal successors, (327973), 54751 states have internal predecessors, (327973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54752 states to 54752 states and 327973 transitions. [2021-05-22 02:05:08,147 INFO L78 Accepts]: Start accepts. Automaton has 54752 states and 327973 transitions. Word has length 37 [2021-05-22 02:05:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:08,147 INFO L482 AbstractCegarLoop]: Abstraction has 54752 states and 327973 transitions. [2021-05-22 02:05:08,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 54752 states and 327973 transitions. [2021-05-22 02:05:08,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:05:08,275 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:08,276 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:08,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-22 02:05:08,276 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:08,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:08,276 INFO L82 PathProgramCache]: Analyzing trace with hash -4599331, now seen corresponding path program 9 times [2021-05-22 02:05:08,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:08,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211765707] [2021-05-22 02:05:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:08,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:08,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211765707] [2021-05-22 02:05:08,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211765707] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:08,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:08,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:05:08,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25167068] [2021-05-22 02:05:08,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:05:08,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:08,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:05:08,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:08,508 INFO L87 Difference]: Start difference. First operand 54752 states and 327973 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:09,822 INFO L93 Difference]: Finished difference Result 141365 states and 795171 transitions. [2021-05-22 02:05:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:05:09,822 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:05:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:10,354 INFO L225 Difference]: With dead ends: 141365 [2021-05-22 02:05:10,354 INFO L226 Difference]: Without dead ends: 138571 [2021-05-22 02:05:10,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 222.8ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:05:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138571 states. [2021-05-22 02:05:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138571 to 55132. [2021-05-22 02:05:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55132 states, 55131 states have (on average 5.980174493479168) internal successors, (329693), 55131 states have internal predecessors, (329693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55132 states to 55132 states and 329693 transitions. [2021-05-22 02:05:19,197 INFO L78 Accepts]: Start accepts. Automaton has 55132 states and 329693 transitions. Word has length 37 [2021-05-22 02:05:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:19,197 INFO L482 AbstractCegarLoop]: Abstraction has 55132 states and 329693 transitions. [2021-05-22 02:05:19,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 55132 states and 329693 transitions. [2021-05-22 02:05:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:05:19,330 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:19,330 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:19,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-22 02:05:19,331 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:19,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1675897309, now seen corresponding path program 10 times [2021-05-22 02:05:19,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:19,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145168401] [2021-05-22 02:05:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:19,924 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-22 02:05:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:19,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:19,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145168401] [2021-05-22 02:05:19,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145168401] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:19,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:19,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:05:19,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273099490] [2021-05-22 02:05:19,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:05:19,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:19,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:05:19,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:19,982 INFO L87 Difference]: Start difference. First operand 55132 states and 329693 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:21,377 INFO L93 Difference]: Finished difference Result 141565 states and 795911 transitions. [2021-05-22 02:05:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:05:21,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:05:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:21,922 INFO L225 Difference]: With dead ends: 141565 [2021-05-22 02:05:21,922 INFO L226 Difference]: Without dead ends: 138191 [2021-05-22 02:05:21,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 663.7ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:05:28,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138191 states. [2021-05-22 02:05:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138191 to 54752. [2021-05-22 02:05:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54752 states, 54751 states have (on average 5.986794761739511) internal successors, (327783), 54751 states have internal predecessors, (327783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54752 states to 54752 states and 327783 transitions. [2021-05-22 02:05:31,053 INFO L78 Accepts]: Start accepts. Automaton has 54752 states and 327783 transitions. Word has length 37 [2021-05-22 02:05:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:31,053 INFO L482 AbstractCegarLoop]: Abstraction has 54752 states and 327783 transitions. [2021-05-22 02:05:31,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 54752 states and 327783 transitions. [2021-05-22 02:05:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:05:31,183 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:31,183 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:31,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-22 02:05:31,183 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:31,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1412562623, now seen corresponding path program 11 times [2021-05-22 02:05:31,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:31,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403002583] [2021-05-22 02:05:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:31,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:31,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403002583] [2021-05-22 02:05:31,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403002583] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:31,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:31,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:05:31,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854441681] [2021-05-22 02:05:31,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:05:31,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:31,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:05:31,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:31,394 INFO L87 Difference]: Start difference. First operand 54752 states and 327783 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:32,775 INFO L93 Difference]: Finished difference Result 141944 states and 798093 transitions. [2021-05-22 02:05:32,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:05:32,775 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:05:32,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:33,312 INFO L225 Difference]: With dead ends: 141944 [2021-05-22 02:05:33,313 INFO L226 Difference]: Without dead ends: 138912 [2021-05-22 02:05:33,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 230.2ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:05:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138912 states. [2021-05-22 02:05:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138912 to 55235. [2021-05-22 02:05:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55235 states, 55234 states have (on average 5.974942969909838) internal successors, (330020), 55234 states have internal predecessors, (330020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55235 states to 55235 states and 330020 transitions. [2021-05-22 02:05:42,051 INFO L78 Accepts]: Start accepts. Automaton has 55235 states and 330020 transitions. Word has length 37 [2021-05-22 02:05:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:42,051 INFO L482 AbstractCegarLoop]: Abstraction has 55235 states and 330020 transitions. [2021-05-22 02:05:42,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 55235 states and 330020 transitions. [2021-05-22 02:05:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:05:42,180 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:42,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:42,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-22 02:05:42,180 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash 20418077, now seen corresponding path program 12 times [2021-05-22 02:05:42,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:42,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980470133] [2021-05-22 02:05:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:42,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:42,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980470133] [2021-05-22 02:05:42,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980470133] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:42,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:42,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:05:42,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589378552] [2021-05-22 02:05:42,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:05:42,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:42,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:05:42,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:42,391 INFO L87 Difference]: Start difference. First operand 55235 states and 330020 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:43,740 INFO L93 Difference]: Finished difference Result 141906 states and 797484 transitions. [2021-05-22 02:05:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:05:43,740 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:05:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:44,903 INFO L225 Difference]: With dead ends: 141906 [2021-05-22 02:05:44,904 INFO L226 Difference]: Without dead ends: 138175 [2021-05-22 02:05:44,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 218.7ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:05:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138175 states. [2021-05-22 02:05:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138175 to 54498. [2021-05-22 02:05:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54498 states, 54497 states have (on average 5.993632677028093) internal successors, (326635), 54497 states have internal predecessors, (326635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54498 states to 54498 states and 326635 transitions. [2021-05-22 02:05:54,089 INFO L78 Accepts]: Start accepts. Automaton has 54498 states and 326635 transitions. Word has length 37 [2021-05-22 02:05:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:54,089 INFO L482 AbstractCegarLoop]: Abstraction has 54498 states and 326635 transitions. [2021-05-22 02:05:54,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:54,089 INFO L276 IsEmpty]: Start isEmpty. Operand 54498 states and 326635 transitions. [2021-05-22 02:05:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:05:54,231 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:54,231 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:54,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-22 02:05:54,231 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:54,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:54,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2071651903, now seen corresponding path program 13 times [2021-05-22 02:05:54,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:54,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341138883] [2021-05-22 02:05:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:54,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:54,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341138883] [2021-05-22 02:05:54,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341138883] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:54,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:54,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:05:54,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249253583] [2021-05-22 02:05:54,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:05:54,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:54,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:05:54,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:54,432 INFO L87 Difference]: Start difference. First operand 54498 states and 326635 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:55,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:55,984 INFO L93 Difference]: Finished difference Result 141183 states and 794445 transitions. [2021-05-22 02:05:55,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:05:55,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:05:55,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:56,607 INFO L225 Difference]: With dead ends: 141183 [2021-05-22 02:05:56,610 INFO L226 Difference]: Without dead ends: 138389 [2021-05-22 02:05:56,610 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 201.1ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:06:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138389 states. [2021-05-22 02:06:05,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138389 to 55070. [2021-05-22 02:06:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55070 states, 55069 states have (on average 5.983493435508181) internal successors, (329505), 55069 states have internal predecessors, (329505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55070 states to 55070 states and 329505 transitions. [2021-05-22 02:06:05,683 INFO L78 Accepts]: Start accepts. Automaton has 55070 states and 329505 transitions. Word has length 37 [2021-05-22 02:06:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:05,683 INFO L482 AbstractCegarLoop]: Abstraction has 55070 states and 329505 transitions. [2021-05-22 02:06:05,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 55070 states and 329505 transitions. [2021-05-22 02:06:05,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:06:05,814 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:05,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:05,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-22 02:06:05,814 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:05,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:05,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1215017409, now seen corresponding path program 14 times [2021-05-22 02:06:05,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:05,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677713117] [2021-05-22 02:06:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:06,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:06,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677713117] [2021-05-22 02:06:06,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677713117] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:06,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:06,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:06:06,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807113884] [2021-05-22 02:06:06,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:06:06,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:06,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:06:06,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:06,018 INFO L87 Difference]: Start difference. First operand 55070 states and 329505 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:07,305 INFO L93 Difference]: Finished difference Result 141407 states and 795267 transitions. [2021-05-22 02:06:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:06:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:06:07,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:07,847 INFO L225 Difference]: With dead ends: 141407 [2021-05-22 02:06:07,847 INFO L226 Difference]: Without dead ends: 138007 [2021-05-22 02:06:07,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 227.2ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:06:14,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138007 states. [2021-05-22 02:06:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138007 to 54688. [2021-05-22 02:06:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54688 states, 54687 states have (on average 5.990271911057473) internal successors, (327590), 54687 states have internal predecessors, (327590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54688 states to 54688 states and 327590 transitions. [2021-05-22 02:06:16,694 INFO L78 Accepts]: Start accepts. Automaton has 54688 states and 327590 transitions. Word has length 37 [2021-05-22 02:06:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:16,694 INFO L482 AbstractCegarLoop]: Abstraction has 54688 states and 327590 transitions. [2021-05-22 02:06:16,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 54688 states and 327590 transitions. [2021-05-22 02:06:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:06:17,319 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:17,319 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:17,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-22 02:06:17,319 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:17,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:17,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1224854941, now seen corresponding path program 15 times [2021-05-22 02:06:17,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:17,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083420729] [2021-05-22 02:06:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:17,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:17,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083420729] [2021-05-22 02:06:17,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083420729] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:17,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:17,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:06:17,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091908103] [2021-05-22 02:06:17,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:06:17,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:17,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:06:17,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:17,585 INFO L87 Difference]: Start difference. First operand 54688 states and 327590 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:19,016 INFO L93 Difference]: Finished difference Result 141157 states and 794164 transitions. [2021-05-22 02:06:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:06:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:06:19,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:19,547 INFO L225 Difference]: With dead ends: 141157 [2021-05-22 02:06:19,547 INFO L226 Difference]: Without dead ends: 138363 [2021-05-22 02:06:19,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 214.7ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:06:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138363 states. [2021-05-22 02:06:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138363 to 55068. [2021-05-22 02:06:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55068 states, 55067 states have (on average 5.9801696115640945) internal successors, (329310), 55067 states have internal predecessors, (329310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55068 states to 55068 states and 329310 transitions. [2021-05-22 02:06:28,541 INFO L78 Accepts]: Start accepts. Automaton has 55068 states and 329310 transitions. Word has length 37 [2021-05-22 02:06:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:28,541 INFO L482 AbstractCegarLoop]: Abstraction has 55068 states and 329310 transitions. [2021-05-22 02:06:28,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 55068 states and 329310 transitions. [2021-05-22 02:06:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:06:28,669 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:28,669 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:28,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-22 02:06:28,669 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:28,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1194995263, now seen corresponding path program 16 times [2021-05-22 02:06:28,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:28,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581075954] [2021-05-22 02:06:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:28,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:28,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581075954] [2021-05-22 02:06:28,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581075954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:28,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:28,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:06:28,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025942434] [2021-05-22 02:06:28,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:06:28,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:28,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:06:28,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:28,889 INFO L87 Difference]: Start difference. First operand 55068 states and 329310 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:30,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:30,163 INFO L93 Difference]: Finished difference Result 141357 states and 794904 transitions. [2021-05-22 02:06:30,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:06:30,163 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:06:30,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:30,695 INFO L225 Difference]: With dead ends: 141357 [2021-05-22 02:06:30,695 INFO L226 Difference]: Without dead ends: 137983 [2021-05-22 02:06:30,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 238.5ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:06:37,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137983 states. [2021-05-22 02:06:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137983 to 54688. [2021-05-22 02:06:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54688 states, 54687 states have (on average 5.9867975935779985) internal successors, (327400), 54687 states have internal predecessors, (327400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54688 states to 54688 states and 327400 transitions. [2021-05-22 02:06:39,506 INFO L78 Accepts]: Start accepts. Automaton has 54688 states and 327400 transitions. Word has length 37 [2021-05-22 02:06:39,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:39,506 INFO L482 AbstractCegarLoop]: Abstraction has 54688 states and 327400 transitions. [2021-05-22 02:06:39,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 54688 states and 327400 transitions. [2021-05-22 02:06:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:06:39,632 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:39,632 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:39,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-22 02:06:39,633 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:39,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1165449665, now seen corresponding path program 17 times [2021-05-22 02:06:39,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:39,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875142659] [2021-05-22 02:06:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:40,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:40,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875142659] [2021-05-22 02:06:40,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875142659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:40,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:40,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:06:40,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554807330] [2021-05-22 02:06:40,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:06:40,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:40,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:06:40,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:40,327 INFO L87 Difference]: Start difference. First operand 54688 states and 327400 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:41,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:41,749 INFO L93 Difference]: Finished difference Result 141707 states and 796999 transitions. [2021-05-22 02:06:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:06:41,749 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:06:41,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:42,294 INFO L225 Difference]: With dead ends: 141707 [2021-05-22 02:06:42,294 INFO L226 Difference]: Without dead ends: 138689 [2021-05-22 02:06:42,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 273.5ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:06:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138689 states. [2021-05-22 02:06:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138689 to 55170. [2021-05-22 02:06:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55170 states, 55169 states have (on average 5.975004078377349) internal successors, (329635), 55169 states have internal predecessors, (329635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55170 states to 55170 states and 329635 transitions. [2021-05-22 02:06:51,379 INFO L78 Accepts]: Start accepts. Automaton has 55170 states and 329635 transitions. Word has length 37 [2021-05-22 02:06:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:51,379 INFO L482 AbstractCegarLoop]: Abstraction has 55170 states and 329635 transitions. [2021-05-22 02:06:51,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 55170 states and 329635 transitions. [2021-05-22 02:06:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:06:51,502 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:51,502 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:51,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-22 02:06:51,502 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:51,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1086180637, now seen corresponding path program 18 times [2021-05-22 02:06:51,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:51,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470636404] [2021-05-22 02:06:51,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:51,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:51,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470636404] [2021-05-22 02:06:51,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470636404] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:51,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:51,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:06:51,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864245492] [2021-05-22 02:06:51,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:06:51,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:51,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:06:51,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:51,692 INFO L87 Difference]: Start difference. First operand 55170 states and 329635 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:52,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:52,968 INFO L93 Difference]: Finished difference Result 141683 states and 796433 transitions. [2021-05-22 02:06:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:06:52,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:06:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:53,496 INFO L225 Difference]: With dead ends: 141683 [2021-05-22 02:06:53,496 INFO L226 Difference]: Without dead ends: 138017 [2021-05-22 02:06:53,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 210.4ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:07:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138017 states. [2021-05-22 02:07:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138017 to 54498. [2021-05-22 02:07:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54498 states, 54497 states have (on average 5.991889461805237) internal successors, (326540), 54497 states have internal predecessors, (326540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54498 states to 54498 states and 326540 transitions. [2021-05-22 02:07:02,230 INFO L78 Accepts]: Start accepts. Automaton has 54498 states and 326540 transitions. Word has length 37 [2021-05-22 02:07:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:02,230 INFO L482 AbstractCegarLoop]: Abstraction has 54498 states and 326540 transitions. [2021-05-22 02:07:02,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 54498 states and 326540 transitions. [2021-05-22 02:07:02,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:07:02,356 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:02,356 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:02,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-22 02:07:02,356 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:02,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:02,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1499211103, now seen corresponding path program 19 times [2021-05-22 02:07:02,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:02,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693559807] [2021-05-22 02:07:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:02,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:02,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693559807] [2021-05-22 02:07:02,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693559807] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:02,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:02,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:07:02,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316365338] [2021-05-22 02:07:02,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:07:02,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:02,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:07:02,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:02,555 INFO L87 Difference]: Start difference. First operand 54498 states and 326540 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:04,396 INFO L93 Difference]: Finished difference Result 142277 states and 800364 transitions. [2021-05-22 02:07:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:07:04,396 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:07:04,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:05,582 INFO L225 Difference]: With dead ends: 142277 [2021-05-22 02:07:05,583 INFO L226 Difference]: Without dead ends: 139245 [2021-05-22 02:07:05,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 217.3ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:07:12,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139245 states. [2021-05-22 02:07:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139245 to 55234. [2021-05-22 02:07:14,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55234 states, 55233 states have (on average 5.979975739141455) internal successors, (330292), 55233 states have internal predecessors, (330292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:15,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55234 states to 55234 states and 330292 transitions. [2021-05-22 02:07:15,105 INFO L78 Accepts]: Start accepts. Automaton has 55234 states and 330292 transitions. Word has length 37 [2021-05-22 02:07:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:15,105 INFO L482 AbstractCegarLoop]: Abstraction has 55234 states and 330292 transitions. [2021-05-22 02:07:15,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 55234 states and 330292 transitions. [2021-05-22 02:07:15,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:07:15,261 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:15,261 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:15,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-22 02:07:15,262 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:15,262 INFO L82 PathProgramCache]: Analyzing trace with hash 752419199, now seen corresponding path program 20 times [2021-05-22 02:07:15,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:15,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895274831] [2021-05-22 02:07:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:15,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:15,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895274831] [2021-05-22 02:07:15,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895274831] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:15,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:15,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:07:15,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848570612] [2021-05-22 02:07:15,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:07:15,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:15,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:07:15,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:15,515 INFO L87 Difference]: Start difference. First operand 55234 states and 330292 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:16,854 INFO L93 Difference]: Finished difference Result 142263 states and 799827 transitions. [2021-05-22 02:07:16,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:07:16,854 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:07:16,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:17,375 INFO L225 Difference]: With dead ends: 142263 [2021-05-22 02:07:17,375 INFO L226 Difference]: Without dead ends: 138750 [2021-05-22 02:07:17,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 227.0ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:07:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138750 states. [2021-05-22 02:07:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138750 to 54739. [2021-05-22 02:07:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54739 states, 54738 states have (on average 5.988125251196609) internal successors, (327778), 54738 states have internal predecessors, (327778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54739 states to 54739 states and 327778 transitions. [2021-05-22 02:07:26,101 INFO L78 Accepts]: Start accepts. Automaton has 54739 states and 327778 transitions. Word has length 37 [2021-05-22 02:07:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:26,101 INFO L482 AbstractCegarLoop]: Abstraction has 54739 states and 327778 transitions. [2021-05-22 02:07:26,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 54739 states and 327778 transitions. [2021-05-22 02:07:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:07:26,223 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:26,223 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:26,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-22 02:07:26,223 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:26,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:26,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1948959231, now seen corresponding path program 21 times [2021-05-22 02:07:26,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:26,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939825767] [2021-05-22 02:07:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:26,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:26,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939825767] [2021-05-22 02:07:26,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939825767] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:26,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:26,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:07:26,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242117391] [2021-05-22 02:07:26,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:07:26,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:26,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:07:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:26,411 INFO L87 Difference]: Start difference. First operand 54739 states and 327778 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:27,650 INFO L93 Difference]: Finished difference Result 142241 states and 799991 transitions. [2021-05-22 02:07:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:07:27,650 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:07:27,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:28,619 INFO L225 Difference]: With dead ends: 142241 [2021-05-22 02:07:28,619 INFO L226 Difference]: Without dead ends: 139209 [2021-05-22 02:07:28,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 631.3ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:07:35,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139209 states. [2021-05-22 02:07:36,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139209 to 55222. [2021-05-22 02:07:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55222 states, 55221 states have (on average 5.9762590318900415) internal successors, (330015), 55221 states have internal predecessors, (330015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55222 states to 55222 states and 330015 transitions. [2021-05-22 02:07:37,626 INFO L78 Accepts]: Start accepts. Automaton has 55222 states and 330015 transitions. Word has length 37 [2021-05-22 02:07:37,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:37,626 INFO L482 AbstractCegarLoop]: Abstraction has 55222 states and 330015 transitions. [2021-05-22 02:07:37,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,626 INFO L276 IsEmpty]: Start isEmpty. Operand 55222 states and 330015 transitions. [2021-05-22 02:07:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:07:37,794 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:37,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:37,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-22 02:07:37,794 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:37,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1153541633, now seen corresponding path program 22 times [2021-05-22 02:07:37,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:37,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230873694] [2021-05-22 02:07:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:38,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:38,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230873694] [2021-05-22 02:07:38,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230873694] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:38,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:38,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:07:38,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785857992] [2021-05-22 02:07:38,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:07:38,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:38,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:07:38,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:38,026 INFO L87 Difference]: Start difference. First operand 55222 states and 330015 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:39,378 INFO L93 Difference]: Finished difference Result 142203 states and 799382 transitions. [2021-05-22 02:07:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:07:39,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:07:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:39,894 INFO L225 Difference]: With dead ends: 142203 [2021-05-22 02:07:39,894 INFO L226 Difference]: Without dead ends: 138726 [2021-05-22 02:07:39,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 231.4ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:07:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138726 states. [2021-05-22 02:07:48,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138726 to 54739. [2021-05-22 02:07:48,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54739 states, 54738 states have (on average 5.983722459717198) internal successors, (327537), 54738 states have internal predecessors, (327537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54739 states to 54739 states and 327537 transitions. [2021-05-22 02:07:48,693 INFO L78 Accepts]: Start accepts. Automaton has 54739 states and 327537 transitions. Word has length 37 [2021-05-22 02:07:48,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:48,693 INFO L482 AbstractCegarLoop]: Abstraction has 54739 states and 327537 transitions. [2021-05-22 02:07:48,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,693 INFO L276 IsEmpty]: Start isEmpty. Operand 54739 states and 327537 transitions. [2021-05-22 02:07:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:07:48,821 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:48,821 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:48,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-22 02:07:48,822 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:48,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1363660451, now seen corresponding path program 23 times [2021-05-22 02:07:48,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:48,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410075403] [2021-05-22 02:07:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:49,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:49,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410075403] [2021-05-22 02:07:49,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410075403] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:49,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:49,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:07:49,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524810126] [2021-05-22 02:07:49,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:07:49,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:49,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:07:49,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:49,016 INFO L87 Difference]: Start difference. First operand 54739 states and 327537 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:50,249 INFO L93 Difference]: Finished difference Result 142212 states and 799663 transitions. [2021-05-22 02:07:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:07:50,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:07:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:51,191 INFO L225 Difference]: With dead ends: 142212 [2021-05-22 02:07:51,191 INFO L226 Difference]: Without dead ends: 139194 [2021-05-22 02:07:51,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 204.9ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:07:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139194 states. [2021-05-22 02:07:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139194 to 55221. [2021-05-22 02:07:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55221 states, 55220 states have (on average 5.971966678739587) internal successors, (329772), 55220 states have internal predecessors, (329772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:59,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55221 states to 55221 states and 329772 transitions. [2021-05-22 02:07:59,698 INFO L78 Accepts]: Start accepts. Automaton has 55221 states and 329772 transitions. Word has length 37 [2021-05-22 02:07:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:59,698 INFO L482 AbstractCegarLoop]: Abstraction has 55221 states and 329772 transitions. [2021-05-22 02:07:59,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:59,698 INFO L276 IsEmpty]: Start isEmpty. Operand 55221 states and 329772 transitions. [2021-05-22 02:08:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:08:00,313 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:00,313 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:00,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-22 02:08:00,313 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:00,313 INFO L82 PathProgramCache]: Analyzing trace with hash -282597825, now seen corresponding path program 24 times [2021-05-22 02:08:00,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:00,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711671141] [2021-05-22 02:08:00,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:00,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:00,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711671141] [2021-05-22 02:08:00,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711671141] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:00,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:00,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:08:00,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941515720] [2021-05-22 02:08:00,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:08:00,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:00,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:08:00,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:00,525 INFO L87 Difference]: Start difference. First operand 55221 states and 329772 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:01,969 INFO L93 Difference]: Finished difference Result 142188 states and 799097 transitions. [2021-05-22 02:08:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:08:01,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:08:01,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:02,488 INFO L225 Difference]: With dead ends: 142188 [2021-05-22 02:08:02,488 INFO L226 Difference]: Without dead ends: 138280 [2021-05-22 02:08:02,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 220.9ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:08:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138280 states. [2021-05-22 02:08:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138280 to 54307. [2021-05-22 02:08:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54307 states, 54306 states have (on average 5.998858321364122) internal successors, (325774), 54306 states have internal predecessors, (325774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54307 states to 54307 states and 325774 transitions. [2021-05-22 02:08:11,401 INFO L78 Accepts]: Start accepts. Automaton has 54307 states and 325774 transitions. Word has length 37 [2021-05-22 02:08:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:11,401 INFO L482 AbstractCegarLoop]: Abstraction has 54307 states and 325774 transitions. [2021-05-22 02:08:11,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 54307 states and 325774 transitions. [2021-05-22 02:08:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:08:11,526 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:11,526 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:11,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-22 02:08:11,526 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:11,526 INFO L82 PathProgramCache]: Analyzing trace with hash 715667261, now seen corresponding path program 25 times [2021-05-22 02:08:11,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:11,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316888244] [2021-05-22 02:08:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:11,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:11,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316888244] [2021-05-22 02:08:11,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316888244] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:11,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:11,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:08:11,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508525661] [2021-05-22 02:08:11,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:08:11,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:11,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:08:11,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:11,737 INFO L87 Difference]: Start difference. First operand 54307 states and 325774 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:13,259 INFO L93 Difference]: Finished difference Result 141506 states and 796059 transitions. [2021-05-22 02:08:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:08:13,259 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:08:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:14,062 INFO L225 Difference]: With dead ends: 141506 [2021-05-22 02:08:14,062 INFO L226 Difference]: Without dead ends: 138712 [2021-05-22 02:08:14,063 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 211.7ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:08:21,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138712 states. [2021-05-22 02:08:22,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138712 to 55295. [2021-05-22 02:08:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55295 states, 55294 states have (on average 5.981426556226715) internal successors, (330737), 55294 states have internal predecessors, (330737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55295 states to 55295 states and 330737 transitions. [2021-05-22 02:08:23,101 INFO L78 Accepts]: Start accepts. Automaton has 55295 states and 330737 transitions. Word has length 37 [2021-05-22 02:08:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:23,102 INFO L482 AbstractCegarLoop]: Abstraction has 55295 states and 330737 transitions. [2021-05-22 02:08:23,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 55295 states and 330737 transitions. [2021-05-22 02:08:23,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:08:23,234 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:23,234 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:23,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-22 02:08:23,234 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:23,235 INFO L82 PathProgramCache]: Analyzing trace with hash -874267489, now seen corresponding path program 26 times [2021-05-22 02:08:23,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:23,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564702447] [2021-05-22 02:08:23,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:23,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:23,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564702447] [2021-05-22 02:08:23,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564702447] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:23,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:23,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:08:23,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057737430] [2021-05-22 02:08:23,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:08:23,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:23,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:08:23,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:23,437 INFO L87 Difference]: Start difference. First operand 55295 states and 330737 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:24,770 INFO L93 Difference]: Finished difference Result 141744 states and 796922 transitions. [2021-05-22 02:08:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:08:24,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:08:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:25,778 INFO L225 Difference]: With dead ends: 141744 [2021-05-22 02:08:25,778 INFO L226 Difference]: Without dead ends: 138201 [2021-05-22 02:08:25,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 221.3ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:08:32,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138201 states. [2021-05-22 02:08:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138201 to 54784. [2021-05-22 02:08:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54784 states, 54783 states have (on average 5.990526258145775) internal successors, (328179), 54783 states have internal predecessors, (328179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54784 states to 54784 states and 328179 transitions. [2021-05-22 02:08:34,830 INFO L78 Accepts]: Start accepts. Automaton has 54784 states and 328179 transitions. Word has length 37 [2021-05-22 02:08:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:34,830 INFO L482 AbstractCegarLoop]: Abstraction has 54784 states and 328179 transitions. [2021-05-22 02:08:34,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 54784 states and 328179 transitions. [2021-05-22 02:08:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:08:35,048 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:35,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:35,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-22 02:08:35,048 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1796729887, now seen corresponding path program 27 times [2021-05-22 02:08:35,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:35,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86631138] [2021-05-22 02:08:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:35,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:35,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86631138] [2021-05-22 02:08:35,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86631138] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:35,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:35,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:08:35,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161433903] [2021-05-22 02:08:35,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:08:35,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:35,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:08:35,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:35,246 INFO L87 Difference]: Start difference. First operand 54784 states and 328179 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:36,652 INFO L93 Difference]: Finished difference Result 141363 states and 795183 transitions. [2021-05-22 02:08:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:08:36,652 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:08:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:37,187 INFO L225 Difference]: With dead ends: 141363 [2021-05-22 02:08:37,188 INFO L226 Difference]: Without dead ends: 138569 [2021-05-22 02:08:37,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 199.0ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:08:44,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138569 states. [2021-05-22 02:08:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138569 to 55166. [2021-05-22 02:08:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55166 states, 55165 states have (on average 5.980313604640624) internal successors, (329904), 55165 states have internal predecessors, (329904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55166 states to 55166 states and 329904 transitions. [2021-05-22 02:08:46,117 INFO L78 Accepts]: Start accepts. Automaton has 55166 states and 329904 transitions. Word has length 37 [2021-05-22 02:08:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:46,117 INFO L482 AbstractCegarLoop]: Abstraction has 55166 states and 329904 transitions. [2021-05-22 02:08:46,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 55166 states and 329904 transitions. [2021-05-22 02:08:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:08:46,245 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:46,245 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:46,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-22 02:08:46,245 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:46,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:46,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1489939425, now seen corresponding path program 28 times [2021-05-22 02:08:46,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:46,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425085408] [2021-05-22 02:08:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:46,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:46,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425085408] [2021-05-22 02:08:46,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425085408] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:46,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:46,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:08:46,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179697722] [2021-05-22 02:08:46,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:08:46,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:46,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:08:46,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:46,428 INFO L87 Difference]: Start difference. First operand 55166 states and 329904 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:47,715 INFO L93 Difference]: Finished difference Result 141587 states and 796005 transitions. [2021-05-22 02:08:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:08:47,715 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:08:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:48,732 INFO L225 Difference]: With dead ends: 141587 [2021-05-22 02:08:48,732 INFO L226 Difference]: Without dead ends: 138187 [2021-05-22 02:08:48,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 205.4ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:08:55,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138187 states. [2021-05-22 02:08:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138187 to 54784. [2021-05-22 02:08:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54784 states, 54783 states have (on average 5.987039775112717) internal successors, (327988), 54783 states have internal predecessors, (327988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54784 states to 54784 states and 327988 transitions. [2021-05-22 02:08:57,715 INFO L78 Accepts]: Start accepts. Automaton has 54784 states and 327988 transitions. Word has length 37 [2021-05-22 02:08:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:57,716 INFO L482 AbstractCegarLoop]: Abstraction has 54784 states and 327988 transitions. [2021-05-22 02:08:57,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:57,716 INFO L276 IsEmpty]: Start isEmpty. Operand 54784 states and 327988 transitions. [2021-05-22 02:08:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:08:57,863 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:57,863 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:57,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-22 02:08:57,863 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:57,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1081075455, now seen corresponding path program 29 times [2021-05-22 02:08:57,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:57,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287913224] [2021-05-22 02:08:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:58,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:58,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287913224] [2021-05-22 02:08:58,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287913224] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:58,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:58,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:08:58,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138028664] [2021-05-22 02:08:58,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:08:58,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:58,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:08:58,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:58,127 INFO L87 Difference]: Start difference. First operand 54784 states and 327988 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:59,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:59,515 INFO L93 Difference]: Finished difference Result 141952 states and 798145 transitions. [2021-05-22 02:08:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:08:59,516 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:08:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:00,045 INFO L225 Difference]: With dead ends: 141952 [2021-05-22 02:09:00,045 INFO L226 Difference]: Without dead ends: 138920 [2021-05-22 02:09:00,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 254.7ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:09:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138920 states. [2021-05-22 02:09:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138920 to 55279. [2021-05-22 02:09:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55279 states, 55278 states have (on average 5.974546835992619) internal successors, (330261), 55278 states have internal predecessors, (330261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55279 states to 55279 states and 330261 transitions. [2021-05-22 02:09:08,936 INFO L78 Accepts]: Start accepts. Automaton has 55279 states and 330261 transitions. Word has length 37 [2021-05-22 02:09:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:08,936 INFO L482 AbstractCegarLoop]: Abstraction has 55279 states and 330261 transitions. [2021-05-22 02:09:08,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 55279 states and 330261 transitions. [2021-05-22 02:09:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:09:09,065 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:09,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:09,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-22 02:09:09,066 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:09,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1170554847, now seen corresponding path program 30 times [2021-05-22 02:09:09,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:09,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319380437] [2021-05-22 02:09:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:09,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:09,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319380437] [2021-05-22 02:09:09,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319380437] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:09,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:09,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:09:09,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52151727] [2021-05-22 02:09:09,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:09:09,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:09,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:09:09,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:09,251 INFO L87 Difference]: Start difference. First operand 55279 states and 330261 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:10,644 INFO L93 Difference]: Finished difference Result 141938 states and 797608 transitions. [2021-05-22 02:09:10,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:09:10,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:09:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:11,768 INFO L225 Difference]: With dead ends: 141938 [2021-05-22 02:09:11,768 INFO L226 Difference]: Without dead ends: 138106 [2021-05-22 02:09:11,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 222.4ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:09:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138106 states. [2021-05-22 02:09:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138106 to 54465. [2021-05-22 02:09:20,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54465 states, 54464 states have (on average 5.995721944770858) internal successors, (326551), 54464 states have internal predecessors, (326551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54465 states to 54465 states and 326551 transitions. [2021-05-22 02:09:20,828 INFO L78 Accepts]: Start accepts. Automaton has 54465 states and 326551 transitions. Word has length 37 [2021-05-22 02:09:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:20,828 INFO L482 AbstractCegarLoop]: Abstraction has 54465 states and 326551 transitions. [2021-05-22 02:09:20,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:20,829 INFO L276 IsEmpty]: Start isEmpty. Operand 54465 states and 326551 transitions. [2021-05-22 02:09:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:09:21,030 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:21,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:21,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-22 02:09:21,030 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:21,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:21,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1819351839, now seen corresponding path program 31 times [2021-05-22 02:09:21,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:21,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306845963] [2021-05-22 02:09:21,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:21,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:21,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306845963] [2021-05-22 02:09:21,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306845963] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:21,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:21,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:09:21,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713473015] [2021-05-22 02:09:21,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:09:21,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:21,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:09:21,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:21,248 INFO L87 Difference]: Start difference. First operand 54465 states and 326551 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:22,614 INFO L93 Difference]: Finished difference Result 141337 states and 795227 transitions. [2021-05-22 02:09:22,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:09:22,614 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:09:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:23,529 INFO L225 Difference]: With dead ends: 141337 [2021-05-22 02:09:23,529 INFO L226 Difference]: Without dead ends: 138543 [2021-05-22 02:09:23,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 218.2ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:09:30,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138543 states. [2021-05-22 02:09:32,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138543 to 55228. [2021-05-22 02:09:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55228 states, 55227 states have (on average 5.980951346261792) internal successors, (330310), 55227 states have internal predecessors, (330310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55228 states to 55228 states and 330310 transitions. [2021-05-22 02:09:32,997 INFO L78 Accepts]: Start accepts. Automaton has 55228 states and 330310 transitions. Word has length 37 [2021-05-22 02:09:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:32,998 INFO L482 AbstractCegarLoop]: Abstraction has 55228 states and 330310 transitions. [2021-05-22 02:09:32,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 55228 states and 330310 transitions. [2021-05-22 02:09:33,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:09:33,138 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:33,138 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:33,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-22 02:09:33,139 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:33,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:33,139 INFO L82 PathProgramCache]: Analyzing trace with hash 229417089, now seen corresponding path program 32 times [2021-05-22 02:09:33,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:33,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068538281] [2021-05-22 02:09:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:33,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:33,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068538281] [2021-05-22 02:09:33,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068538281] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:33,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:33,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:09:33,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649610304] [2021-05-22 02:09:33,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:09:33,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:33,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:09:33,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:33,359 INFO L87 Difference]: Start difference. First operand 55228 states and 330310 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:34,687 INFO L93 Difference]: Finished difference Result 141575 states and 796090 transitions. [2021-05-22 02:09:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:09:34,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:09:34,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:35,223 INFO L225 Difference]: With dead ends: 141575 [2021-05-22 02:09:35,223 INFO L226 Difference]: Without dead ends: 138032 [2021-05-22 02:09:35,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 245.9ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:09:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138032 states. [2021-05-22 02:09:43,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138032 to 54717. [2021-05-22 02:09:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54717 states, 54716 states have (on average 5.990112581329044) internal successors, (327755), 54716 states have internal predecessors, (327755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54717 states to 54717 states and 327755 transitions. [2021-05-22 02:09:43,954 INFO L78 Accepts]: Start accepts. Automaton has 54717 states and 327755 transitions. Word has length 37 [2021-05-22 02:09:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:43,954 INFO L482 AbstractCegarLoop]: Abstraction has 54717 states and 327755 transitions. [2021-05-22 02:09:43,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 54717 states and 327755 transitions. [2021-05-22 02:09:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:09:44,078 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:44,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:44,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-22 02:09:44,079 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:44,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:44,079 INFO L82 PathProgramCache]: Analyzing trace with hash -688233697, now seen corresponding path program 33 times [2021-05-22 02:09:44,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:44,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129061094] [2021-05-22 02:09:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:44,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:44,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129061094] [2021-05-22 02:09:44,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129061094] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:44,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:44,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:09:44,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084358761] [2021-05-22 02:09:44,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:09:44,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:44,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:09:44,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:44,298 INFO L87 Difference]: Start difference. First operand 54717 states and 327755 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:45,615 INFO L93 Difference]: Finished difference Result 141124 states and 794087 transitions. [2021-05-22 02:09:45,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:09:45,616 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:09:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:46,748 INFO L225 Difference]: With dead ends: 141124 [2021-05-22 02:09:46,748 INFO L226 Difference]: Without dead ends: 138330 [2021-05-22 02:09:46,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 229.7ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:09:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138330 states. [2021-05-22 02:09:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138330 to 55093. [2021-05-22 02:09:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55093 states, 55092 states have (on average 5.980233064691788) internal successors, (329463), 55092 states have internal predecessors, (329463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55093 states to 55093 states and 329463 transitions. [2021-05-22 02:09:55,946 INFO L78 Accepts]: Start accepts. Automaton has 55093 states and 329463 transitions. Word has length 37 [2021-05-22 02:09:55,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:55,946 INFO L482 AbstractCegarLoop]: Abstraction has 55093 states and 329463 transitions. [2021-05-22 02:09:55,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 55093 states and 329463 transitions. [2021-05-22 02:09:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:09:56,108 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:56,108 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:56,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-22 02:09:56,108 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1958307041, now seen corresponding path program 34 times [2021-05-22 02:09:56,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:56,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38450148] [2021-05-22 02:09:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:56,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:56,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38450148] [2021-05-22 02:09:56,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38450148] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:56,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:56,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:09:56,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968265497] [2021-05-22 02:09:56,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:09:56,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:09:56,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:56,326 INFO L87 Difference]: Start difference. First operand 55093 states and 329463 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:57,674 INFO L93 Difference]: Finished difference Result 141284 states and 794671 transitions. [2021-05-22 02:09:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:09:57,674 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:09:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:58,212 INFO L225 Difference]: With dead ends: 141284 [2021-05-22 02:09:58,212 INFO L226 Difference]: Without dead ends: 137954 [2021-05-22 02:09:58,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 244.1ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:10:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137954 states. [2021-05-22 02:10:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137954 to 54717. [2021-05-22 02:10:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54717 states, 54716 states have (on average 5.986676657650413) internal successors, (327567), 54716 states have internal predecessors, (327567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54717 states to 54717 states and 327567 transitions. [2021-05-22 02:10:07,043 INFO L78 Accepts]: Start accepts. Automaton has 54717 states and 327567 transitions. Word has length 37 [2021-05-22 02:10:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:07,043 INFO L482 AbstractCegarLoop]: Abstraction has 54717 states and 327567 transitions. [2021-05-22 02:10:07,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 54717 states and 327567 transitions. [2021-05-22 02:10:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:10:07,171 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:07,171 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:07,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-22 02:10:07,171 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:07,171 INFO L82 PathProgramCache]: Analyzing trace with hash 728928257, now seen corresponding path program 35 times [2021-05-22 02:10:07,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:07,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181960610] [2021-05-22 02:10:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:07,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:07,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181960610] [2021-05-22 02:10:07,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181960610] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:07,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:07,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:10:07,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348832422] [2021-05-22 02:10:07,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:10:07,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:07,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:10:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:10:07,392 INFO L87 Difference]: Start difference. First operand 54717 states and 327567 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:08,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:08,678 INFO L93 Difference]: Finished difference Result 141687 states and 796937 transitions. [2021-05-22 02:10:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:10:08,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:10:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:09,695 INFO L225 Difference]: With dead ends: 141687 [2021-05-22 02:10:09,696 INFO L226 Difference]: Without dead ends: 138655 [2021-05-22 02:10:09,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 241.7ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:10:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138655 states. [2021-05-22 02:10:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138655 to 55180. [2021-05-22 02:10:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55180 states, 55179 states have (on average 5.9757153989742475) internal successors, (329734), 55179 states have internal predecessors, (329734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55180 states to 55180 states and 329734 transitions. [2021-05-22 02:10:18,806 INFO L78 Accepts]: Start accepts. Automaton has 55180 states and 329734 transitions. Word has length 37 [2021-05-22 02:10:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:18,807 INFO L482 AbstractCegarLoop]: Abstraction has 55180 states and 329734 transitions. [2021-05-22 02:10:18,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 55180 states and 329734 transitions. [2021-05-22 02:10:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-22 02:10:18,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:18,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:18,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-22 02:10:18,992 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:18,992 INFO L82 PathProgramCache]: Analyzing trace with hash 639168607, now seen corresponding path program 36 times [2021-05-22 02:10:18,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:18,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955787956] [2021-05-22 02:10:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:19,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:19,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955787956] [2021-05-22 02:10:19,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955787956] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:19,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:19,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-22 02:10:19,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694292724] [2021-05-22 02:10:19,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 02:10:19,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:19,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 02:10:19,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:10:19,228 INFO L87 Difference]: Start difference. First operand 55180 states and 329734 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:20,618 INFO L93 Difference]: Finished difference Result 141609 states and 796188 transitions. [2021-05-22 02:10:20,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 02:10:20,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-05-22 02:10:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:21,141 INFO L225 Difference]: With dead ends: 141609 [2021-05-22 02:10:21,141 INFO L226 Difference]: Without dead ends: 137940 [2021-05-22 02:10:21,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 261.1ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-05-22 02:10:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137940 states. Received shutdown request... [2021-05-22 02:10:28,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-22 02:10:28,681 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 02:10:28,681 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2021-05-22 02:10:28,682 INFO L255 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-05-22 02:10:28,683 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 02:10:28,683 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 02:10:28,683 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 02:10:28,683 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 02:10:28,683 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 02:10:28,683 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 02:10:28,683 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 02:10:28,683 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 02:10:28,685 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 120 transitions, 528 flow [2021-05-22 02:10:28,685 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 02:10:28,685 INFO L315 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2021-05-22 02:10:28,685 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-22 02:10:28,686 WARN L196 ceAbstractionStarter]: Timeout [2021-05-22 02:10:28,687 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 02:10:28 BasicIcfg [2021-05-22 02:10:28,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 02:10:28,687 INFO L168 Benchmark]: Toolchain (without parser) took 712140.44 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 332.2 MB in the beginning and 8.6 GB in the end (delta: -8.3 GB). Peak memory consumption was 7.3 GB. Max. memory is 16.0 GB. [2021-05-22 02:10:28,687 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 352.3 MB. Free memory was 333.3 MB in the beginning and 333.2 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:10:28,687 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.64 ms. Allocated memory is still 352.3 MB. Free memory was 332.1 MB in the beginning and 330.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:10:28,687 INFO L168 Benchmark]: Boogie Preprocessor took 8.60 ms. Allocated memory is still 352.3 MB. Free memory was 330.6 MB in the beginning and 329.7 MB in the end (delta: 899.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-05-22 02:10:28,687 INFO L168 Benchmark]: RCFGBuilder took 221.90 ms. Allocated memory is still 352.3 MB. Free memory was 329.7 MB in the beginning and 317.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-05-22 02:10:28,687 INFO L168 Benchmark]: TraceAbstraction took 711889.86 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 317.1 MB in the beginning and 8.6 GB in the end (delta: -8.3 GB). Peak memory consumption was 7.3 GB. Max. memory is 16.0 GB. [2021-05-22 02:10:28,688 INFO L339 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 0.10 ms. Allocated memory is still 352.3 MB. Free memory was 333.3 MB in the beginning and 333.2 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.64 ms. Allocated memory is still 352.3 MB. Free memory was 332.1 MB in the beginning and 330.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 8.60 ms. Allocated memory is still 352.3 MB. Free memory was 330.6 MB in the beginning and 329.7 MB in the end (delta: 899.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 221.90 ms. Allocated memory is still 352.3 MB. Free memory was 329.7 MB in the beginning and 317.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 711889.86 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 317.1 MB in the beginning and 8.6 GB in the end (delta: -8.3 GB). Peak memory consumption was 7.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 19 procedures, 85 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 711728.8ms, OverallIterations: 43, TraceHistogramMax: 1, EmptinessCheckTime: 14562.9ms, AutomataDifference: 98024.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 161317.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14198 SDtfs, 32913 SDslu, 41294 SDs, 0 SdLazy, 3549 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2913.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 417 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 9183.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=271988occurred in iteration=0, InterpolantAutomatonStates: 417, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 427911.5ms AutomataMinimizationTime, 43 MinimizatonAttempts, 2924405 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.7ms SsaConstructionTime, 94.0ms SatisfiabilityAnalysisTime, 9085.8ms InterpolantComputationTime, 1591 NumberOfCodeBlocks, 1591 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 1548 ConstructedInterpolants, 0 QuantifiedInterpolants, 50369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 43 InterpolantComputations, 43 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 19 procedures, 85 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 2.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown