/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 21:40:43,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 21:40:43,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 21:40:43,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 21:40:43,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 21:40:43,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 21:40:43,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 21:40:43,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 21:40:43,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 21:40:43,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 21:40:43,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 21:40:43,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 21:40:43,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 21:40:43,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 21:40:43,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 21:40:43,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 21:40:43,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 21:40:43,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 21:40:43,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 21:40:43,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 21:40:43,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 21:40:43,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 21:40:43,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 21:40:43,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 21:40:43,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-10 21:40:43,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-10 21:40:43,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-10 21:40:43,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-10 21:40:43,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-10 21:40:43,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-10 21:40:43,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-10 21:40:43,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-10 21:40:43,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-10 21:40:43,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-10 21:40:43,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-10 21:40:43,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-10 21:40:43,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-10 21:40:43,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-10 21:40:43,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 21:40:43,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 21:40:43,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 21:40:43,833 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.epf [2021-03-10 21:40:43,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 21:40:43,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 21:40:43,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 21:40:43,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 21:40:43,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 21:40:43,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 21:40:43,880 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 21:40:43,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 21:40:43,880 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 21:40:43,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 21:40:43,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 21:40:43,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 21:40:43,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 21:40:43,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 21:40:43,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 21:40:43,881 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 21:40:43,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 21:40:43,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 21:40:43,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 21:40:43,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 21:40:43,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 21:40:43,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 21:40:43,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 21:40:43,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 21:40:43,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 21:40:43,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 21:40:43,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 21:40:43,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 21:40:43,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 21:40:43,883 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 21:40:43,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 21:40:43,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 21:40:44,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 21:40:44,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 21:40:44,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 21:40:44,170 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 21:40:44,172 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 21:40:44,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl [2021-03-10 21:40:44,174 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl' [2021-03-10 21:40:44,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 21:40:44,222 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 21:40:44,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 21:40:44,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 21:40:44,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 21:40:44,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/1) ... [2021-03-10 21:40:44,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/1) ... [2021-03-10 21:40:44,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 21:40:44,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 21:40:44,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 21:40:44,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 21:40:44,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/1) ... [2021-03-10 21:40:44,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/1) ... [2021-03-10 21:40:44,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/1) ... [2021-03-10 21:40:44,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/1) ... [2021-03-10 21:40:44,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/1) ... [2021-03-10 21:40:44,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/1) ... [2021-03-10 21:40:44,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/1) ... [2021-03-10 21:40:44,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 21:40:44,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 21:40:44,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 21:40:44,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 21:40:44,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (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 [2021-03-10 21:40:44,348 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-10 21:40:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-10 21:40:44,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-10 21:40:44,349 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-10 21:40:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-10 21:40:44,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-10 21:40:44,349 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 21:40:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 21:40:44,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 21:40:44,350 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-10 21:40:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-10 21:40:44,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-10 21:40:44,350 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-10 21:40:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-10 21:40:44,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-10 21:40:44,351 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-10 21:40:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-10 21:40:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-10 21:40:44,352 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-10 21:40:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-10 21:40:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-10 21:40:44,354 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 21:40:44,650 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 21:40:44,651 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-10 21:40:44,651 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-03-10 21:40:44,652 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2021-03-10 21:40:44,652 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2021-03-10 21:40:44,652 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread4EXIT is neither atomic block end nor error location. [2021-03-10 21:40:44,652 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread5EXIT is neither atomic block end nor error location. [2021-03-10 21:40:44,652 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread6EXIT is neither atomic block end nor error location. [2021-03-10 21:40:44,654 INFO L202 PluginConnector]: Adding new model exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 09:40:44 BoogieIcfgContainer [2021-03-10 21:40:44,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 21:40:44,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 21:40:44,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 21:40:44,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 21:40:44,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:40:44" (1/2) ... [2021-03-10 21:40:44,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357a9d0a and model type exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 09:40:44, skipping insertion in model container [2021-03-10 21:40:44,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 09:40:44" (2/2) ... [2021-03-10 21:40:44,661 INFO L111 eAbstractionObserver]: Analyzing ICFG exp3x3-opt.wvr.bpl [2021-03-10 21:40:44,665 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 21:40:44,666 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 21:40:44,669 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 21:40:44,670 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 21:40:44,778 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-03-10 21:40:44,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-10 21:40:44,846 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 21:40:44,846 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 21:40:44,846 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 21:40:44,847 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 21:40:44,847 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 21:40:44,847 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 21:40:44,847 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 21:40:44,847 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 21:40:44,856 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 35 transitions, 118 flow [2021-03-10 21:40:44,897 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 195 states, 193 states have (on average 5.341968911917099) internal successors, (1031), 194 states have internal predecessors, (1031), 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) [2021-03-10 21:40:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 193 states have (on average 5.341968911917099) internal successors, (1031), 194 states have internal predecessors, (1031), 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) [2021-03-10 21:40:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-03-10 21:40:44,916 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:44,917 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:44,917 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:44,925 INFO L82 PathProgramCache]: Analyzing trace with hash 336800480, now seen corresponding path program 1 times [2021-03-10 21:40:44,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:44,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203120951] [2021-03-10 21:40:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 21:40:45,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203120951] [2021-03-10 21:40:45,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 21:40:45,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 21:40:45,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655048269] [2021-03-10 21:40:45,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 21:40:45,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:45,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 21:40:45,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 21:40:45,120 INFO L87 Difference]: Start difference. First operand has 195 states, 193 states have (on average 5.341968911917099) internal successors, (1031), 194 states have internal predecessors, (1031), 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 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-03-10 21:40:45,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:45,164 INFO L93 Difference]: Finished difference Result 382 states and 2054 transitions. [2021-03-10 21:40:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 21:40:45,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2021-03-10 21:40:45,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:45,182 INFO L225 Difference]: With dead ends: 382 [2021-03-10 21:40:45,183 INFO L226 Difference]: Without dead ends: 304 [2021-03-10 21:40:45,184 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 21:40:45,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-03-10 21:40:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-03-10 21:40:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 5.458745874587459) internal successors, (1654), 303 states have internal predecessors, (1654), 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) [2021-03-10 21:40:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 1654 transitions. [2021-03-10 21:40:45,251 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 1654 transitions. Word has length 21 [2021-03-10 21:40:45,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:45,251 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 1654 transitions. [2021-03-10 21:40:45,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-03-10 21:40:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 1654 transitions. [2021-03-10 21:40:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-10 21:40:45,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:45,263 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:45,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 21:40:45,264 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:45,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1957873019, now seen corresponding path program 1 times [2021-03-10 21:40:45,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:45,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969160050] [2021-03-10 21:40:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 21:40:45,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969160050] [2021-03-10 21:40:45,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 21:40:45,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 21:40:45,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801672019] [2021-03-10 21:40:45,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 21:40:45,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:45,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 21:40:45,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 21:40:45,341 INFO L87 Difference]: Start difference. First operand 304 states and 1654 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-03-10 21:40:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:45,370 INFO L93 Difference]: Finished difference Result 551 states and 3079 transitions. [2021-03-10 21:40:45,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 21:40:45,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2021-03-10 21:40:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:45,377 INFO L225 Difference]: With dead ends: 551 [2021-03-10 21:40:45,377 INFO L226 Difference]: Without dead ends: 502 [2021-03-10 21:40:45,378 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 21:40:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-03-10 21:40:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2021-03-10 21:40:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 5.598802395209581) internal successors, (2805), 501 states have internal predecessors, (2805), 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) [2021-03-10 21:40:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 2805 transitions. [2021-03-10 21:40:45,449 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 2805 transitions. Word has length 22 [2021-03-10 21:40:45,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:45,450 INFO L480 AbstractCegarLoop]: Abstraction has 502 states and 2805 transitions. [2021-03-10 21:40:45,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-03-10 21:40:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 2805 transitions. [2021-03-10 21:40:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-10 21:40:45,463 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:45,464 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:45,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 21:40:45,464 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:45,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:45,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1560108314, now seen corresponding path program 1 times [2021-03-10 21:40:45,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:45,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951741600] [2021-03-10 21:40:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 21:40:45,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951741600] [2021-03-10 21:40:45,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 21:40:45,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 21:40:45,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215318821] [2021-03-10 21:40:45,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 21:40:45,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:45,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 21:40:45,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 21:40:45,524 INFO L87 Difference]: Start difference. First operand 502 states and 2805 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-03-10 21:40:45,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:45,547 INFO L93 Difference]: Finished difference Result 989 states and 5577 transitions. [2021-03-10 21:40:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 21:40:45,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-03-10 21:40:45,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:45,556 INFO L225 Difference]: With dead ends: 989 [2021-03-10 21:40:45,557 INFO L226 Difference]: Without dead ends: 859 [2021-03-10 21:40:45,557 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 21:40:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-03-10 21:40:45,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2021-03-10 21:40:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 858 states have (on average 5.6678321678321675) internal successors, (4863), 858 states have internal predecessors, (4863), 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) [2021-03-10 21:40:45,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 4863 transitions. [2021-03-10 21:40:45,601 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 4863 transitions. Word has length 23 [2021-03-10 21:40:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:45,602 INFO L480 AbstractCegarLoop]: Abstraction has 859 states and 4863 transitions. [2021-03-10 21:40:45,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-03-10 21:40:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 4863 transitions. [2021-03-10 21:40:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-03-10 21:40:45,606 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:45,607 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:45,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 21:40:45,607 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:45,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1404106583, now seen corresponding path program 1 times [2021-03-10 21:40:45,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:45,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624089785] [2021-03-10 21:40:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 21:40:45,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624089785] [2021-03-10 21:40:45,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858560282] [2021-03-10 21:40:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:45,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-10 21:40:45,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 21:40:45,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:45,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-10 21:40:45,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376760008] [2021-03-10 21:40:45,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 21:40:45,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:45,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 21:40:45,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 21:40:45,946 INFO L87 Difference]: Start difference. First operand 859 states and 4863 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-03-10 21:40:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:46,122 INFO L93 Difference]: Finished difference Result 2168 states and 12284 transitions. [2021-03-10 21:40:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:40:46,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 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 24 [2021-03-10 21:40:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:46,132 INFO L225 Difference]: With dead ends: 2168 [2021-03-10 21:40:46,133 INFO L226 Difference]: Without dead ends: 1000 [2021-03-10 21:40:46,133 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:40:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-03-10 21:40:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 614. [2021-03-10 21:40:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 5.634584013050571) internal successors, (3454), 613 states have internal predecessors, (3454), 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) [2021-03-10 21:40:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 3454 transitions. [2021-03-10 21:40:46,165 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 3454 transitions. Word has length 24 [2021-03-10 21:40:46,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:46,165 INFO L480 AbstractCegarLoop]: Abstraction has 614 states and 3454 transitions. [2021-03-10 21:40:46,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-03-10 21:40:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 3454 transitions. [2021-03-10 21:40:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-03-10 21:40:46,169 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:46,169 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:46,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:46,387 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:46,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:46,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1358128455, now seen corresponding path program 1 times [2021-03-10 21:40:46,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:46,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115132211] [2021-03-10 21:40:46,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 21:40:46,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115132211] [2021-03-10 21:40:46,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394253667] [2021-03-10 21:40:46,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:46,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-10 21:40:46,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 21:40:46,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:46,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-10 21:40:46,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999725967] [2021-03-10 21:40:46,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 21:40:46,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:46,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 21:40:46,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 21:40:46,584 INFO L87 Difference]: Start difference. First operand 614 states and 3454 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-03-10 21:40:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:46,689 INFO L93 Difference]: Finished difference Result 1659 states and 9450 transitions. [2021-03-10 21:40:46,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:40:46,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 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 24 [2021-03-10 21:40:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:46,707 INFO L225 Difference]: With dead ends: 1659 [2021-03-10 21:40:46,708 INFO L226 Difference]: Without dead ends: 930 [2021-03-10 21:40:46,708 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:40:46,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-03-10 21:40:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 760. [2021-03-10 21:40:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 5.664031620553359) internal successors, (4299), 759 states have internal predecessors, (4299), 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) [2021-03-10 21:40:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 4299 transitions. [2021-03-10 21:40:46,741 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 4299 transitions. Word has length 24 [2021-03-10 21:40:46,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:46,742 INFO L480 AbstractCegarLoop]: Abstraction has 760 states and 4299 transitions. [2021-03-10 21:40:46,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-03-10 21:40:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 4299 transitions. [2021-03-10 21:40:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-10 21:40:46,745 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:46,745 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:46,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:46,967 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:46,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:46,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1283985542, now seen corresponding path program 1 times [2021-03-10 21:40:46,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:46,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348862298] [2021-03-10 21:40:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-10 21:40:47,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348862298] [2021-03-10 21:40:47,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630486585] [2021-03-10 21:40:47,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:47,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-10 21:40:47,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-10 21:40:47,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:47,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-10 21:40:47,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765155787] [2021-03-10 21:40:47,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 21:40:47,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:47,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 21:40:47,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 21:40:47,155 INFO L87 Difference]: Start difference. First operand 760 states and 4299 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-03-10 21:40:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:47,315 INFO L93 Difference]: Finished difference Result 2539 states and 14502 transitions. [2021-03-10 21:40:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:40:47,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 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 25 [2021-03-10 21:40:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:47,329 INFO L225 Difference]: With dead ends: 2539 [2021-03-10 21:40:47,330 INFO L226 Difference]: Without dead ends: 1460 [2021-03-10 21:40:47,330 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:40:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-03-10 21:40:47,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2021-03-10 21:40:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 5.748457847840987) internal successors, (8387), 1459 states have internal predecessors, (8387), 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) [2021-03-10 21:40:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 8387 transitions. [2021-03-10 21:40:47,390 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 8387 transitions. Word has length 25 [2021-03-10 21:40:47,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:47,391 INFO L480 AbstractCegarLoop]: Abstraction has 1460 states and 8387 transitions. [2021-03-10 21:40:47,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-03-10 21:40:47,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 8387 transitions. [2021-03-10 21:40:47,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-10 21:40:47,397 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:47,397 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:47,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:47,611 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:47,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1790951632, now seen corresponding path program 1 times [2021-03-10 21:40:47,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:47,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490110675] [2021-03-10 21:40:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:47,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490110675] [2021-03-10 21:40:47,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216346054] [2021-03-10 21:40:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:47,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:40:47,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:47,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:47,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2021-03-10 21:40:47,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344086364] [2021-03-10 21:40:47,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 21:40:47,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:47,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 21:40:47,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:40:47,848 INFO L87 Difference]: Start difference. First operand 1460 states and 8387 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-03-10 21:40:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:48,061 INFO L93 Difference]: Finished difference Result 7036 states and 40197 transitions. [2021-03-10 21:40:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 21:40:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 27 [2021-03-10 21:40:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:48,116 INFO L225 Difference]: With dead ends: 7036 [2021-03-10 21:40:48,116 INFO L226 Difference]: Without dead ends: 5971 [2021-03-10 21:40:48,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:40:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2021-03-10 21:40:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 3455. [2021-03-10 21:40:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 3454 states have (on average 6.335552982049798) internal successors, (21883), 3454 states have internal predecessors, (21883), 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) [2021-03-10 21:40:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 21883 transitions. [2021-03-10 21:40:48,364 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 21883 transitions. Word has length 27 [2021-03-10 21:40:48,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:48,364 INFO L480 AbstractCegarLoop]: Abstraction has 3455 states and 21883 transitions. [2021-03-10 21:40:48,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-03-10 21:40:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 21883 transitions. [2021-03-10 21:40:48,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-10 21:40:48,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:48,381 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:48,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:48,605 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:48,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:48,605 INFO L82 PathProgramCache]: Analyzing trace with hash -97672488, now seen corresponding path program 2 times [2021-03-10 21:40:48,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:48,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957348403] [2021-03-10 21:40:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-03-10 21:40:48,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957348403] [2021-03-10 21:40:48,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040693342] [2021-03-10 21:40:48,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:48,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:40:48,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:40:48,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:40:48,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:48,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:48,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2021-03-10 21:40:48,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635807711] [2021-03-10 21:40:48,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 21:40:48,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:48,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 21:40:48,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:40:48,860 INFO L87 Difference]: Start difference. First operand 3455 states and 21883 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-03-10 21:40:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:49,164 INFO L93 Difference]: Finished difference Result 12126 states and 75417 transitions. [2021-03-10 21:40:49,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 21:40:49,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 27 [2021-03-10 21:40:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:49,336 INFO L225 Difference]: With dead ends: 12126 [2021-03-10 21:40:49,337 INFO L226 Difference]: Without dead ends: 10635 [2021-03-10 21:40:49,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:40:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10635 states. [2021-03-10 21:40:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10635 to 6709. [2021-03-10 21:40:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6709 states, 6708 states have (on average 6.719886702444842) internal successors, (45077), 6708 states have internal predecessors, (45077), 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) [2021-03-10 21:40:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6709 states to 6709 states and 45077 transitions. [2021-03-10 21:40:49,875 INFO L78 Accepts]: Start accepts. Automaton has 6709 states and 45077 transitions. Word has length 27 [2021-03-10 21:40:49,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:49,875 INFO L480 AbstractCegarLoop]: Abstraction has 6709 states and 45077 transitions. [2021-03-10 21:40:49,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-03-10 21:40:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 6709 states and 45077 transitions. [2021-03-10 21:40:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-03-10 21:40:49,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:49,919 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:50,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:50,143 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:50,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:50,143 INFO L82 PathProgramCache]: Analyzing trace with hash 329078829, now seen corresponding path program 3 times [2021-03-10 21:40:50,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:50,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241965849] [2021-03-10 21:40:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:50,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241965849] [2021-03-10 21:40:50,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572079345] [2021-03-10 21:40:50,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:50,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:40:50,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:40:50,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:40:50,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:50,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:50,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:40:50,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427153820] [2021-03-10 21:40:50,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:40:50,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:50,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:40:50,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:50,385 INFO L87 Difference]: Start difference. First operand 6709 states and 45077 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-03-10 21:40:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:50,584 INFO L93 Difference]: Finished difference Result 10641 states and 67958 transitions. [2021-03-10 21:40:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:40:50,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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 28 [2021-03-10 21:40:50,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:50,639 INFO L225 Difference]: With dead ends: 10641 [2021-03-10 21:40:50,639 INFO L226 Difference]: Without dead ends: 8426 [2021-03-10 21:40:50,639 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.4ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8426 states. [2021-03-10 21:40:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8426 to 6226. [2021-03-10 21:40:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6226 states, 6225 states have (on average 6.617510040160642) internal successors, (41194), 6225 states have internal predecessors, (41194), 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) [2021-03-10 21:40:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 41194 transitions. [2021-03-10 21:40:51,059 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 41194 transitions. Word has length 28 [2021-03-10 21:40:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:51,059 INFO L480 AbstractCegarLoop]: Abstraction has 6226 states and 41194 transitions. [2021-03-10 21:40:51,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-03-10 21:40:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 41194 transitions. [2021-03-10 21:40:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-03-10 21:40:51,082 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:51,082 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:51,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:51,295 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:51,296 INFO L82 PathProgramCache]: Analyzing trace with hash 589935477, now seen corresponding path program 4 times [2021-03-10 21:40:51,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:51,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728713129] [2021-03-10 21:40:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:51,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728713129] [2021-03-10 21:40:51,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538532869] [2021-03-10 21:40:51,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:51,385 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:40:51,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:40:51,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:40:51,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:51,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:51,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:40:51,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574868099] [2021-03-10 21:40:51,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:40:51,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:51,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:40:51,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:51,497 INFO L87 Difference]: Start difference. First operand 6226 states and 41194 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 21:40:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:51,738 INFO L93 Difference]: Finished difference Result 11692 states and 73874 transitions. [2021-03-10 21:40:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:40:51,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 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 28 [2021-03-10 21:40:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:51,782 INFO L225 Difference]: With dead ends: 11692 [2021-03-10 21:40:51,782 INFO L226 Difference]: Without dead ends: 7762 [2021-03-10 21:40:51,783 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:40:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2021-03-10 21:40:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 6226. [2021-03-10 21:40:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6226 states, 6225 states have (on average 6.525622489959839) internal successors, (40622), 6225 states have internal predecessors, (40622), 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) [2021-03-10 21:40:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 40622 transitions. [2021-03-10 21:40:52,144 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 40622 transitions. Word has length 28 [2021-03-10 21:40:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:52,146 INFO L480 AbstractCegarLoop]: Abstraction has 6226 states and 40622 transitions. [2021-03-10 21:40:52,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 21:40:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 40622 transitions. [2021-03-10 21:40:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-03-10 21:40:52,170 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:52,170 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:52,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-03-10 21:40:52,395 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:52,395 INFO L82 PathProgramCache]: Analyzing trace with hash 913623149, now seen corresponding path program 5 times [2021-03-10 21:40:52,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:52,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946828465] [2021-03-10 21:40:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:52,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946828465] [2021-03-10 21:40:52,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461730805] [2021-03-10 21:40:52,422 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:52,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:40:52,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:40:52,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:40:52,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:52,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:52,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:40:52,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653851388] [2021-03-10 21:40:52,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:40:52,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:52,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:40:52,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:52,564 INFO L87 Difference]: Start difference. First operand 6226 states and 40622 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:40:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:52,824 INFO L93 Difference]: Finished difference Result 10638 states and 67096 transitions. [2021-03-10 21:40:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:40:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 28 [2021-03-10 21:40:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:52,858 INFO L225 Difference]: With dead ends: 10638 [2021-03-10 21:40:52,858 INFO L226 Difference]: Without dead ends: 7656 [2021-03-10 21:40:52,858 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:40:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2021-03-10 21:40:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 5654. [2021-03-10 21:40:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 5653 states have (on average 6.388466301079073) internal successors, (36114), 5653 states have internal predecessors, (36114), 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) [2021-03-10 21:40:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 36114 transitions. [2021-03-10 21:40:53,235 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 36114 transitions. Word has length 28 [2021-03-10 21:40:53,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:53,235 INFO L480 AbstractCegarLoop]: Abstraction has 5654 states and 36114 transitions. [2021-03-10 21:40:53,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:40:53,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 36114 transitions. [2021-03-10 21:40:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-03-10 21:40:53,254 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:53,254 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:53,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-03-10 21:40:53,473 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:53,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:53,474 INFO L82 PathProgramCache]: Analyzing trace with hash -317378095, now seen corresponding path program 6 times [2021-03-10 21:40:53,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:53,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157315113] [2021-03-10 21:40:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:53,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157315113] [2021-03-10 21:40:53,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096264140] [2021-03-10 21:40:53,518 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:53,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:40:53,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:40:53,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:40:53,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:53,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:53,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:40:53,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399320860] [2021-03-10 21:40:53,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:40:53,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:53,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:40:53,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:53,658 INFO L87 Difference]: Start difference. First operand 5654 states and 36114 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:40:53,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:53,874 INFO L93 Difference]: Finished difference Result 8816 states and 55756 transitions. [2021-03-10 21:40:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:40:53,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 28 [2021-03-10 21:40:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:53,910 INFO L225 Difference]: With dead ends: 8816 [2021-03-10 21:40:53,911 INFO L226 Difference]: Without dead ends: 7190 [2021-03-10 21:40:53,911 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:53,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7190 states. [2021-03-10 21:40:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7190 to 5368. [2021-03-10 21:40:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5367 states have (on average 6.3355692193031485) internal successors, (34003), 5367 states have internal predecessors, (34003), 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) [2021-03-10 21:40:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 34003 transitions. [2021-03-10 21:40:54,095 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 34003 transitions. Word has length 28 [2021-03-10 21:40:54,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:54,095 INFO L480 AbstractCegarLoop]: Abstraction has 5368 states and 34003 transitions. [2021-03-10 21:40:54,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:40:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 34003 transitions. [2021-03-10 21:40:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-03-10 21:40:54,113 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:54,113 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:54,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:54,337 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:54,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:54,338 INFO L82 PathProgramCache]: Analyzing trace with hash -451391601, now seen corresponding path program 7 times [2021-03-10 21:40:54,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:54,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680678987] [2021-03-10 21:40:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:54,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680678987] [2021-03-10 21:40:54,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914334771] [2021-03-10 21:40:54,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:54,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:40:54,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:54,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:54,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:40:54,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954920815] [2021-03-10 21:40:54,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:40:54,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:54,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:40:54,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:54,614 INFO L87 Difference]: Start difference. First operand 5368 states and 34003 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-03-10 21:40:54,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:54,761 INFO L93 Difference]: Finished difference Result 7762 states and 48993 transitions. [2021-03-10 21:40:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:40:54,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 28 [2021-03-10 21:40:54,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:54,782 INFO L225 Difference]: With dead ends: 7762 [2021-03-10 21:40:54,783 INFO L226 Difference]: Without dead ends: 6512 [2021-03-10 21:40:54,783 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:40:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2021-03-10 21:40:54,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 5940. [2021-03-10 21:40:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 6.339956221586125) internal successors, (37653), 5939 states have internal predecessors, (37653), 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) [2021-03-10 21:40:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 37653 transitions. [2021-03-10 21:40:54,951 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 37653 transitions. Word has length 28 [2021-03-10 21:40:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:54,952 INFO L480 AbstractCegarLoop]: Abstraction has 5940 states and 37653 transitions. [2021-03-10 21:40:54,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-03-10 21:40:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 37653 transitions. [2021-03-10 21:40:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-03-10 21:40:54,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:54,967 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:55,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:55,168 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:55,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1791557168, now seen corresponding path program 8 times [2021-03-10 21:40:55,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:55,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821084032] [2021-03-10 21:40:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:55,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821084032] [2021-03-10 21:40:55,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312209060] [2021-03-10 21:40:55,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:55,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:40:55,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:40:55,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 21:40:55,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 21:40:55,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:55,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 6 [2021-03-10 21:40:55,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798766615] [2021-03-10 21:40:55,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 21:40:55,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:55,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 21:40:55,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:40:55,572 INFO L87 Difference]: Start difference. First operand 5940 states and 37653 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-03-10 21:40:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:55,714 INFO L93 Difference]: Finished difference Result 13716 states and 86495 transitions. [2021-03-10 21:40:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:40:55,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 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 29 [2021-03-10 21:40:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:55,771 INFO L225 Difference]: With dead ends: 13716 [2021-03-10 21:40:55,771 INFO L226 Difference]: Without dead ends: 12948 [2021-03-10 21:40:55,771 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:40:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2021-03-10 21:40:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 9586. [2021-03-10 21:40:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9586 states, 9585 states have (on average 6.6200312989045385) internal successors, (63453), 9585 states have internal predecessors, (63453), 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) [2021-03-10 21:40:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9586 states to 9586 states and 63453 transitions. [2021-03-10 21:40:56,239 INFO L78 Accepts]: Start accepts. Automaton has 9586 states and 63453 transitions. Word has length 29 [2021-03-10 21:40:56,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:56,239 INFO L480 AbstractCegarLoop]: Abstraction has 9586 states and 63453 transitions. [2021-03-10 21:40:56,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-03-10 21:40:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 9586 states and 63453 transitions. [2021-03-10 21:40:56,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-03-10 21:40:56,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:56,262 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:56,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-03-10 21:40:56,462 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:56,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:56,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1011086738, now seen corresponding path program 9 times [2021-03-10 21:40:56,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:56,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811995511] [2021-03-10 21:40:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-03-10 21:40:56,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811995511] [2021-03-10 21:40:56,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331182268] [2021-03-10 21:40:56,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:56,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:40:56,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:40:56,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:40:56,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:40:56,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:56,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-10 21:40:56,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613805801] [2021-03-10 21:40:56,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:40:56,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:56,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:40:56,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:56,628 INFO L87 Difference]: Start difference. First operand 9586 states and 63453 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:40:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:56,977 INFO L93 Difference]: Finished difference Result 25346 states and 162331 transitions. [2021-03-10 21:40:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 21:40:56,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 29 [2021-03-10 21:40:56,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:57,247 INFO L225 Difference]: With dead ends: 25346 [2021-03-10 21:40:57,247 INFO L226 Difference]: Without dead ends: 23242 [2021-03-10 21:40:57,248 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 111.8ms TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:40:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23242 states. [2021-03-10 21:40:57,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23242 to 14272. [2021-03-10 21:40:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14272 states, 14271 states have (on average 6.922219886483077) internal successors, (98787), 14271 states have internal predecessors, (98787), 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) [2021-03-10 21:40:57,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14272 states to 14272 states and 98787 transitions. [2021-03-10 21:40:57,880 INFO L78 Accepts]: Start accepts. Automaton has 14272 states and 98787 transitions. Word has length 29 [2021-03-10 21:40:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:57,880 INFO L480 AbstractCegarLoop]: Abstraction has 14272 states and 98787 transitions. [2021-03-10 21:40:57,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:40:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 14272 states and 98787 transitions. [2021-03-10 21:40:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 21:40:57,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:57,918 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:58,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-03-10 21:40:58,119 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:58,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1639971327, now seen corresponding path program 10 times [2021-03-10 21:40:58,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:58,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417004877] [2021-03-10 21:40:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:40:58,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417004877] [2021-03-10 21:40:58,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422333245] [2021-03-10 21:40:58,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:58,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:40:58,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:40:58,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:40:58,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:40:58,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:58,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:40:58,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561045834] [2021-03-10 21:40:58,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:40:58,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:40:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:58,260 INFO L87 Difference]: Start difference. First operand 14272 states and 98787 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-03-10 21:40:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:58,449 INFO L93 Difference]: Finished difference Result 19626 states and 131324 transitions. [2021-03-10 21:40:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:40:58,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 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 30 [2021-03-10 21:40:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:40:58,516 INFO L225 Difference]: With dead ends: 19626 [2021-03-10 21:40:58,516 INFO L226 Difference]: Without dead ends: 16783 [2021-03-10 21:40:58,516 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:58,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16783 states. [2021-03-10 21:40:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16783 to 13215. [2021-03-10 21:40:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13215 states, 13214 states have (on average 6.851672468593915) internal successors, (90538), 13214 states have internal predecessors, (90538), 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) [2021-03-10 21:40:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 90538 transitions. [2021-03-10 21:40:59,118 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 90538 transitions. Word has length 30 [2021-03-10 21:40:59,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:40:59,118 INFO L480 AbstractCegarLoop]: Abstraction has 13215 states and 90538 transitions. [2021-03-10 21:40:59,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-03-10 21:40:59,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 90538 transitions. [2021-03-10 21:40:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 21:40:59,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:40:59,159 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:40:59,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-03-10 21:40:59,363 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:40:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:40:59,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1256865581, now seen corresponding path program 11 times [2021-03-10 21:40:59,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:40:59,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307198617] [2021-03-10 21:40:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:40:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:40:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:40:59,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307198617] [2021-03-10 21:40:59,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314691901] [2021-03-10 21:40:59,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:40:59,455 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:40:59,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:40:59,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:40:59,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:40:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:40:59,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:40:59,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:40:59,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410654106] [2021-03-10 21:40:59,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:40:59,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:40:59,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:40:59,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:40:59,550 INFO L87 Difference]: Start difference. First operand 13215 states and 90538 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 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) [2021-03-10 21:40:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:40:59,804 INFO L93 Difference]: Finished difference Result 20352 states and 135504 transitions. [2021-03-10 21:40:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:40:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 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 30 [2021-03-10 21:40:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:00,104 INFO L225 Difference]: With dead ends: 20352 [2021-03-10 21:41:00,104 INFO L226 Difference]: Without dead ends: 15593 [2021-03-10 21:41:00,104 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15593 states. [2021-03-10 21:41:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15593 to 13215. [2021-03-10 21:41:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13215 states, 13214 states have (on average 6.761767822006962) internal successors, (89350), 13214 states have internal predecessors, (89350), 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) [2021-03-10 21:41:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 89350 transitions. [2021-03-10 21:41:00,472 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 89350 transitions. Word has length 30 [2021-03-10 21:41:00,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:00,472 INFO L480 AbstractCegarLoop]: Abstraction has 13215 states and 89350 transitions. [2021-03-10 21:41:00,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 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) [2021-03-10 21:41:00,473 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 89350 transitions. [2021-03-10 21:41:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 21:41:00,503 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:00,503 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:00,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:00,704 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1618072385, now seen corresponding path program 12 times [2021-03-10 21:41:00,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:00,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034553820] [2021-03-10 21:41:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:00,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034553820] [2021-03-10 21:41:00,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154673025] [2021-03-10 21:41:00,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:00,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:41:00,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:00,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:41:00,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:00,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:00,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:41:00,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014009025] [2021-03-10 21:41:00,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:41:00,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:00,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:41:00,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:41:00,889 INFO L87 Difference]: Start difference. First operand 13215 states and 89350 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:41:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:01,397 INFO L93 Difference]: Finished difference Result 19162 states and 126426 transitions. [2021-03-10 21:41:01,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:41:01,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 30 [2021-03-10 21:41:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:01,473 INFO L225 Difference]: With dead ends: 19162 [2021-03-10 21:41:01,473 INFO L226 Difference]: Without dead ends: 16185 [2021-03-10 21:41:01,473 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:01,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2021-03-10 21:41:01,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 12027. [2021-03-10 21:41:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12027 states, 12026 states have (on average 6.625644437053052) internal successors, (79680), 12026 states have internal predecessors, (79680), 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) [2021-03-10 21:41:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12027 states to 12027 states and 79680 transitions. [2021-03-10 21:41:01,819 INFO L78 Accepts]: Start accepts. Automaton has 12027 states and 79680 transitions. Word has length 30 [2021-03-10 21:41:01,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:01,819 INFO L480 AbstractCegarLoop]: Abstraction has 12027 states and 79680 transitions. [2021-03-10 21:41:01,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:41:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 12027 states and 79680 transitions. [2021-03-10 21:41:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 21:41:01,851 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:01,851 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:02,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-10 21:41:02,055 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:02,056 INFO L82 PathProgramCache]: Analyzing trace with hash 937421221, now seen corresponding path program 13 times [2021-03-10 21:41:02,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:02,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632092409] [2021-03-10 21:41:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:02,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632092409] [2021-03-10 21:41:02,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137971502] [2021-03-10 21:41:02,111 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:02,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:41:02,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:02,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:02,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:41:02,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062775959] [2021-03-10 21:41:02,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:41:02,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:02,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:41:02,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:41:02,241 INFO L87 Difference]: Start difference. First operand 12027 states and 79680 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:41:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:02,661 INFO L93 Difference]: Finished difference Result 16783 states and 110645 transitions. [2021-03-10 21:41:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:41:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 30 [2021-03-10 21:41:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:02,713 INFO L225 Difference]: With dead ends: 16783 [2021-03-10 21:41:02,713 INFO L226 Difference]: Without dead ends: 14405 [2021-03-10 21:41:02,713 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:41:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14405 states. [2021-03-10 21:41:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14405 to 11433. [2021-03-10 21:41:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11433 states, 11432 states have (on average 6.57295311406578) internal successors, (75142), 11432 states have internal predecessors, (75142), 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) [2021-03-10 21:41:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11433 states to 11433 states and 75142 transitions. [2021-03-10 21:41:03,009 INFO L78 Accepts]: Start accepts. Automaton has 11433 states and 75142 transitions. Word has length 30 [2021-03-10 21:41:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:03,010 INFO L480 AbstractCegarLoop]: Abstraction has 11433 states and 75142 transitions. [2021-03-10 21:41:03,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:41:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 11433 states and 75142 transitions. [2021-03-10 21:41:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 21:41:03,041 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:03,041 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:03,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:03,251 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:03,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash -73696029, now seen corresponding path program 14 times [2021-03-10 21:41:03,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:03,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834704372] [2021-03-10 21:41:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:03,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834704372] [2021-03-10 21:41:03,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998807888] [2021-03-10 21:41:03,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:03,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:41:03,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:03,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:41:03,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:03,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:03,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:41:03,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311561093] [2021-03-10 21:41:03,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:41:03,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:03,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:41:03,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:41:03,438 INFO L87 Difference]: Start difference. First operand 11433 states and 75142 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-03-10 21:41:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:03,823 INFO L93 Difference]: Finished difference Result 15000 states and 98811 transitions. [2021-03-10 21:41:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:41:03,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 30 [2021-03-10 21:41:03,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:03,883 INFO L225 Difference]: With dead ends: 15000 [2021-03-10 21:41:03,883 INFO L226 Difference]: Without dead ends: 13809 [2021-03-10 21:41:03,884 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13809 states. [2021-03-10 21:41:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13809 to 12621. [2021-03-10 21:41:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12621 states, 12620 states have (on average 6.579239302694137) internal successors, (83030), 12620 states have internal predecessors, (83030), 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) [2021-03-10 21:41:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12621 states to 12621 states and 83030 transitions. [2021-03-10 21:41:04,257 INFO L78 Accepts]: Start accepts. Automaton has 12621 states and 83030 transitions. Word has length 30 [2021-03-10 21:41:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:04,257 INFO L480 AbstractCegarLoop]: Abstraction has 12621 states and 83030 transitions. [2021-03-10 21:41:04,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-03-10 21:41:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 12621 states and 83030 transitions. [2021-03-10 21:41:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-10 21:41:04,293 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:04,293 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:04,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:04,493 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1100522568, now seen corresponding path program 15 times [2021-03-10 21:41:04,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:04,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073519872] [2021-03-10 21:41:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 21:41:04,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073519872] [2021-03-10 21:41:04,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086043561] [2021-03-10 21:41:04,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:04,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:41:04,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:04,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 21:41:04,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:04,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:04,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 9 [2021-03-10 21:41:04,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555024813] [2021-03-10 21:41:04,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:41:04,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:04,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:41:04,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:04,718 INFO L87 Difference]: Start difference. First operand 12621 states and 83030 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 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) [2021-03-10 21:41:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:05,655 INFO L93 Difference]: Finished difference Result 40048 states and 255837 transitions. [2021-03-10 21:41:05,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 21:41:05,656 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 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 31 [2021-03-10 21:41:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:05,850 INFO L225 Difference]: With dead ends: 40048 [2021-03-10 21:41:05,851 INFO L226 Difference]: Without dead ends: 37299 [2021-03-10 21:41:05,851 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 228.0ms TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-03-10 21:41:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37299 states. [2021-03-10 21:41:06,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37299 to 23827. [2021-03-10 21:41:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23827 states, 23826 states have (on average 6.888734995383195) internal successors, (164131), 23826 states have internal predecessors, (164131), 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) [2021-03-10 21:41:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23827 states to 23827 states and 164131 transitions. [2021-03-10 21:41:06,776 INFO L78 Accepts]: Start accepts. Automaton has 23827 states and 164131 transitions. Word has length 31 [2021-03-10 21:41:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:06,776 INFO L480 AbstractCegarLoop]: Abstraction has 23827 states and 164131 transitions. [2021-03-10 21:41:06,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 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) [2021-03-10 21:41:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 23827 states and 164131 transitions. [2021-03-10 21:41:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:06,840 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:06,840 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:07,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-03-10 21:41:07,042 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:07,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:07,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1166394235, now seen corresponding path program 16 times [2021-03-10 21:41:07,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:07,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394361490] [2021-03-10 21:41:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:07,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394361490] [2021-03-10 21:41:07,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635960893] [2021-03-10 21:41:07,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:07,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:41:07,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:07,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:07,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:07,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:07,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2021-03-10 21:41:07,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703572785] [2021-03-10 21:41:07,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:41:07,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:07,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:41:07,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:07,231 INFO L87 Difference]: Start difference. First operand 23827 states and 164131 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 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) [2021-03-10 21:41:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:08,006 INFO L93 Difference]: Finished difference Result 37282 states and 244997 transitions. [2021-03-10 21:41:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:41:08,006 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 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 32 [2021-03-10 21:41:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:08,154 INFO L225 Difference]: With dead ends: 37282 [2021-03-10 21:41:08,154 INFO L226 Difference]: Without dead ends: 32432 [2021-03-10 21:41:08,154 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32432 states. [2021-03-10 21:41:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32432 to 23826. [2021-03-10 21:41:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23826 states, 23825 states have (on average 6.828247639034627) internal successors, (162683), 23825 states have internal predecessors, (162683), 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) [2021-03-10 21:41:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23826 states to 23826 states and 162683 transitions. [2021-03-10 21:41:09,188 INFO L78 Accepts]: Start accepts. Automaton has 23826 states and 162683 transitions. Word has length 32 [2021-03-10 21:41:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:09,189 INFO L480 AbstractCegarLoop]: Abstraction has 23826 states and 162683 transitions. [2021-03-10 21:41:09,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 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) [2021-03-10 21:41:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 23826 states and 162683 transitions. [2021-03-10 21:41:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:09,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:09,253 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:09,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:09,453 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:09,454 INFO L82 PathProgramCache]: Analyzing trace with hash 418167869, now seen corresponding path program 17 times [2021-03-10 21:41:09,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:09,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400246556] [2021-03-10 21:41:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:09,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400246556] [2021-03-10 21:41:09,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386054808] [2021-03-10 21:41:09,518 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:09,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:41:09,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:09,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:09,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:09,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:09,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:41:09,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147192968] [2021-03-10 21:41:09,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:41:09,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:09,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:41:09,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:41:09,684 INFO L87 Difference]: Start difference. First operand 23826 states and 162683 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 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) [2021-03-10 21:41:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:10,180 INFO L93 Difference]: Finished difference Result 41333 states and 268452 transitions. [2021-03-10 21:41:10,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:41:10,180 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 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 32 [2021-03-10 21:41:10,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:10,315 INFO L225 Difference]: With dead ends: 41333 [2021-03-10 21:41:10,315 INFO L226 Difference]: Without dead ends: 28816 [2021-03-10 21:41:10,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 103.0ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:41:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28816 states. [2021-03-10 21:41:11,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28816 to 21142. [2021-03-10 21:41:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21142 states, 21141 states have (on average 6.765668606026205) internal successors, (143033), 21141 states have internal predecessors, (143033), 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) [2021-03-10 21:41:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21142 states to 21142 states and 143033 transitions. [2021-03-10 21:41:11,278 INFO L78 Accepts]: Start accepts. Automaton has 21142 states and 143033 transitions. Word has length 32 [2021-03-10 21:41:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:11,278 INFO L480 AbstractCegarLoop]: Abstraction has 21142 states and 143033 transitions. [2021-03-10 21:41:11,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 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) [2021-03-10 21:41:11,278 INFO L276 IsEmpty]: Start isEmpty. Operand 21142 states and 143033 transitions. [2021-03-10 21:41:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:11,329 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:11,329 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:11,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-03-10 21:41:11,530 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:11,530 INFO L82 PathProgramCache]: Analyzing trace with hash 791966179, now seen corresponding path program 18 times [2021-03-10 21:41:11,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:11,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082939904] [2021-03-10 21:41:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 21:41:11,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082939904] [2021-03-10 21:41:11,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127712005] [2021-03-10 21:41:11,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:11,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:41:11,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:11,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:11,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:11,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:11,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-03-10 21:41:11,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089284360] [2021-03-10 21:41:11,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:41:11,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:11,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:41:11,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:41:11,743 INFO L87 Difference]: Start difference. First operand 21142 states and 143033 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2021-03-10 21:41:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:12,536 INFO L93 Difference]: Finished difference Result 44813 states and 287398 transitions. [2021-03-10 21:41:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:41:12,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 32 [2021-03-10 21:41:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:12,686 INFO L225 Difference]: With dead ends: 44813 [2021-03-10 21:41:12,686 INFO L226 Difference]: Without dead ends: 33157 [2021-03-10 21:41:12,686 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 90.6ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:41:12,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33157 states. [2021-03-10 21:41:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33157 to 20660. [2021-03-10 21:41:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20660 states, 20659 states have (on average 6.63855946560821) internal successors, (137146), 20659 states have internal predecessors, (137146), 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) [2021-03-10 21:41:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20660 states to 20660 states and 137146 transitions. [2021-03-10 21:41:13,686 INFO L78 Accepts]: Start accepts. Automaton has 20660 states and 137146 transitions. Word has length 32 [2021-03-10 21:41:13,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:13,686 INFO L480 AbstractCegarLoop]: Abstraction has 20660 states and 137146 transitions. [2021-03-10 21:41:13,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2021-03-10 21:41:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 20660 states and 137146 transitions. [2021-03-10 21:41:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:13,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:13,740 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:13,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-03-10 21:41:13,943 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:13,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1084222905, now seen corresponding path program 19 times [2021-03-10 21:41:13,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:13,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342862363] [2021-03-10 21:41:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:13,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342862363] [2021-03-10 21:41:13,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536737864] [2021-03-10 21:41:13,980 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:14,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:14,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:14,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:14,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-03-10 21:41:14,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433802007] [2021-03-10 21:41:14,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:41:14,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:14,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:41:14,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:41:14,144 INFO L87 Difference]: Start difference. First operand 20660 states and 137146 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2021-03-10 21:41:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:14,565 INFO L93 Difference]: Finished difference Result 40132 states and 256712 transitions. [2021-03-10 21:41:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:41:14,565 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 32 [2021-03-10 21:41:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:14,694 INFO L225 Difference]: With dead ends: 40132 [2021-03-10 21:41:14,694 INFO L226 Difference]: Without dead ends: 29402 [2021-03-10 21:41:14,694 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:41:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29402 states. [2021-03-10 21:41:15,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29402 to 19318. [2021-03-10 21:41:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19318 states, 19317 states have (on average 6.575969353419268) internal successors, (127028), 19317 states have internal predecessors, (127028), 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) [2021-03-10 21:41:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19318 states to 19318 states and 127028 transitions. [2021-03-10 21:41:15,735 INFO L78 Accepts]: Start accepts. Automaton has 19318 states and 127028 transitions. Word has length 32 [2021-03-10 21:41:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:15,735 INFO L480 AbstractCegarLoop]: Abstraction has 19318 states and 127028 transitions. [2021-03-10 21:41:15,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2021-03-10 21:41:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 19318 states and 127028 transitions. [2021-03-10 21:41:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:15,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:15,788 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:15,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:15,988 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:15,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1022183291, now seen corresponding path program 20 times [2021-03-10 21:41:15,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:15,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764761801] [2021-03-10 21:41:15,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:16,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764761801] [2021-03-10 21:41:16,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629438312] [2021-03-10 21:41:16,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:16,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:41:16,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:16,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:16,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:16,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:16,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-03-10 21:41:16,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830976235] [2021-03-10 21:41:16,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 21:41:16,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:16,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 21:41:16,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:41:16,191 INFO L87 Difference]: Start difference. First operand 19318 states and 127028 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 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) [2021-03-10 21:41:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:17,064 INFO L93 Difference]: Finished difference Result 30263 states and 196279 transitions. [2021-03-10 21:41:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:41:17,064 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 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 32 [2021-03-10 21:41:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:17,232 INFO L225 Difference]: With dead ends: 30263 [2021-03-10 21:41:17,232 INFO L226 Difference]: Without dead ends: 27994 [2021-03-10 21:41:17,233 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 102.2ms TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:41:17,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27994 states. [2021-03-10 21:41:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27994 to 19318. [2021-03-10 21:41:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19318 states, 19317 states have (on average 6.575969353419268) internal successors, (127028), 19317 states have internal predecessors, (127028), 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) [2021-03-10 21:41:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19318 states to 19318 states and 127028 transitions. [2021-03-10 21:41:17,844 INFO L78 Accepts]: Start accepts. Automaton has 19318 states and 127028 transitions. Word has length 32 [2021-03-10 21:41:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:17,844 INFO L480 AbstractCegarLoop]: Abstraction has 19318 states and 127028 transitions. [2021-03-10 21:41:17,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 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) [2021-03-10 21:41:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 19318 states and 127028 transitions. [2021-03-10 21:41:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:17,901 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:17,901 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:18,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-03-10 21:41:18,103 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:18,104 INFO L82 PathProgramCache]: Analyzing trace with hash 13605117, now seen corresponding path program 21 times [2021-03-10 21:41:18,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:18,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250967953] [2021-03-10 21:41:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:18,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250967953] [2021-03-10 21:41:18,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626190670] [2021-03-10 21:41:18,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:18,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:41:18,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:18,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 21:41:18,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-03-10 21:41:18,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:18,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-03-10 21:41:18,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902939789] [2021-03-10 21:41:18,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 21:41:18,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:18,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 21:41:18,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:41:18,294 INFO L87 Difference]: Start difference. First operand 19318 states and 127028 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 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) [2021-03-10 21:41:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:19,694 INFO L93 Difference]: Finished difference Result 45485 states and 293122 transitions. [2021-03-10 21:41:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 21:41:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 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 32 [2021-03-10 21:41:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:19,868 INFO L225 Difference]: With dead ends: 45485 [2021-03-10 21:41:19,868 INFO L226 Difference]: Without dead ends: 40798 [2021-03-10 21:41:19,869 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 383.9ms TimeCoverageRelationStatistics Valid=240, Invalid=1740, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 21:41:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40798 states. [2021-03-10 21:41:20,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40798 to 22218. [2021-03-10 21:41:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22218 states, 22217 states have (on average 6.736643111131116) internal successors, (149668), 22217 states have internal predecessors, (149668), 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) [2021-03-10 21:41:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22218 states to 22218 states and 149668 transitions. [2021-03-10 21:41:20,870 INFO L78 Accepts]: Start accepts. Automaton has 22218 states and 149668 transitions. Word has length 32 [2021-03-10 21:41:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:20,870 INFO L480 AbstractCegarLoop]: Abstraction has 22218 states and 149668 transitions. [2021-03-10 21:41:20,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 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) [2021-03-10 21:41:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 22218 states and 149668 transitions. [2021-03-10 21:41:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:20,925 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:20,925 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:21,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:21,125 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:21,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1536238151, now seen corresponding path program 22 times [2021-03-10 21:41:21,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:21,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196689090] [2021-03-10 21:41:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:21,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196689090] [2021-03-10 21:41:21,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133933502] [2021-03-10 21:41:21,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:21,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:41:21,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:21,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:21,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:21,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:21,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2021-03-10 21:41:21,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690840265] [2021-03-10 21:41:21,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:41:21,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:21,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:41:21,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:21,287 INFO L87 Difference]: Start difference. First operand 22218 states and 149668 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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) [2021-03-10 21:41:22,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:22,213 INFO L93 Difference]: Finished difference Result 41987 states and 272492 transitions. [2021-03-10 21:41:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 21:41:22,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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 32 [2021-03-10 21:41:22,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:22,378 INFO L225 Difference]: With dead ends: 41987 [2021-03-10 21:41:22,378 INFO L226 Difference]: Without dead ends: 33040 [2021-03-10 21:41:22,378 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:41:22,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33040 states. [2021-03-10 21:41:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33040 to 22218. [2021-03-10 21:41:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22218 states, 22217 states have (on average 6.7117972723590045) internal successors, (149116), 22217 states have internal predecessors, (149116), 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) [2021-03-10 21:41:23,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22218 states to 22218 states and 149116 transitions. [2021-03-10 21:41:23,084 INFO L78 Accepts]: Start accepts. Automaton has 22218 states and 149116 transitions. Word has length 32 [2021-03-10 21:41:23,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:23,084 INFO L480 AbstractCegarLoop]: Abstraction has 22218 states and 149116 transitions. [2021-03-10 21:41:23,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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) [2021-03-10 21:41:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 22218 states and 149116 transitions. [2021-03-10 21:41:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:23,149 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:23,149 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:23,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-03-10 21:41:23,350 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:23,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:23,350 INFO L82 PathProgramCache]: Analyzing trace with hash -339950933, now seen corresponding path program 23 times [2021-03-10 21:41:23,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:23,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228232668] [2021-03-10 21:41:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:23,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228232668] [2021-03-10 21:41:23,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086936415] [2021-03-10 21:41:23,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:23,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-03-10 21:41:23,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:23,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:23,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:23,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:23,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2021-03-10 21:41:23,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540471730] [2021-03-10 21:41:23,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:41:23,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:23,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:41:23,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:23,958 INFO L87 Difference]: Start difference. First operand 22218 states and 149116 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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) [2021-03-10 21:41:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:24,396 INFO L93 Difference]: Finished difference Result 37137 states and 242038 transitions. [2021-03-10 21:41:24,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:41:24,397 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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 32 [2021-03-10 21:41:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:24,540 INFO L225 Difference]: With dead ends: 37137 [2021-03-10 21:41:24,540 INFO L226 Difference]: Without dead ends: 33280 [2021-03-10 21:41:24,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 409.9ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33280 states. [2021-03-10 21:41:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33280 to 21666. [2021-03-10 21:41:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21666 states, 21665 states have (on average 6.638495268866836) internal successors, (143823), 21665 states have internal predecessors, (143823), 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) [2021-03-10 21:41:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21666 states to 21666 states and 143823 transitions. [2021-03-10 21:41:25,518 INFO L78 Accepts]: Start accepts. Automaton has 21666 states and 143823 transitions. Word has length 32 [2021-03-10 21:41:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:25,518 INFO L480 AbstractCegarLoop]: Abstraction has 21666 states and 143823 transitions. [2021-03-10 21:41:25,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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) [2021-03-10 21:41:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 21666 states and 143823 transitions. [2021-03-10 21:41:25,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:25,565 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:25,565 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:25,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-10 21:41:25,767 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:25,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash -277911319, now seen corresponding path program 24 times [2021-03-10 21:41:25,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:25,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480662170] [2021-03-10 21:41:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 21:41:25,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480662170] [2021-03-10 21:41:25,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740200205] [2021-03-10 21:41:25,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:25,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:41:25,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:25,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:25,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:25,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:25,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-03-10 21:41:25,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768181418] [2021-03-10 21:41:25,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:41:25,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:25,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:41:25,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:41:25,970 INFO L87 Difference]: Start difference. First operand 21666 states and 143823 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2021-03-10 21:41:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:26,737 INFO L93 Difference]: Finished difference Result 55554 states and 358578 transitions. [2021-03-10 21:41:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 21:41:26,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 32 [2021-03-10 21:41:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:26,917 INFO L225 Difference]: With dead ends: 55554 [2021-03-10 21:41:26,917 INFO L226 Difference]: Without dead ends: 31050 [2021-03-10 21:41:26,918 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:41:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31050 states. [2021-03-10 21:41:27,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31050 to 18354. [2021-03-10 21:41:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18354 states, 18353 states have (on average 6.557238598594235) internal successors, (120345), 18353 states have internal predecessors, (120345), 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) [2021-03-10 21:41:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18354 states to 18354 states and 120345 transitions. [2021-03-10 21:41:27,954 INFO L78 Accepts]: Start accepts. Automaton has 18354 states and 120345 transitions. Word has length 32 [2021-03-10 21:41:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:27,954 INFO L480 AbstractCegarLoop]: Abstraction has 18354 states and 120345 transitions. [2021-03-10 21:41:27,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2021-03-10 21:41:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 18354 states and 120345 transitions. [2021-03-10 21:41:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-03-10 21:41:28,004 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:28,004 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:28,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:28,207 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:28,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1583277101, now seen corresponding path program 25 times [2021-03-10 21:41:28,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:28,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623886800] [2021-03-10 21:41:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:28,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623886800] [2021-03-10 21:41:28,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085920594] [2021-03-10 21:41:28,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:28,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:28,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:28,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:28,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:41:28,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974548007] [2021-03-10 21:41:28,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:41:28,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:28,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:41:28,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:41:28,374 INFO L87 Difference]: Start difference. First operand 18354 states and 120345 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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) [2021-03-10 21:41:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:28,784 INFO L93 Difference]: Finished difference Result 24315 states and 158900 transitions. [2021-03-10 21:41:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:41:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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 32 [2021-03-10 21:41:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:29,367 INFO L225 Difference]: With dead ends: 24315 [2021-03-10 21:41:29,367 INFO L226 Difference]: Without dead ends: 21666 [2021-03-10 21:41:29,368 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:41:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21666 states. [2021-03-10 21:41:29,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21666 to 19458. [2021-03-10 21:41:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19458 states, 19457 states have (on average 6.559027599321581) internal successors, (127619), 19457 states have internal predecessors, (127619), 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) [2021-03-10 21:41:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19458 states to 19458 states and 127619 transitions. [2021-03-10 21:41:29,965 INFO L78 Accepts]: Start accepts. Automaton has 19458 states and 127619 transitions. Word has length 32 [2021-03-10 21:41:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:29,965 INFO L480 AbstractCegarLoop]: Abstraction has 19458 states and 127619 transitions. [2021-03-10 21:41:29,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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) [2021-03-10 21:41:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 19458 states and 127619 transitions. [2021-03-10 21:41:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-03-10 21:41:30,021 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:30,021 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:30,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:30,223 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:30,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:30,224 INFO L82 PathProgramCache]: Analyzing trace with hash 548184980, now seen corresponding path program 26 times [2021-03-10 21:41:30,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:30,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262027028] [2021-03-10 21:41:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:30,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262027028] [2021-03-10 21:41:30,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150331961] [2021-03-10 21:41:30,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:30,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:41:30,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:30,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 21:41:30,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-03-10 21:41:30,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:30,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 8 [2021-03-10 21:41:30,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340669910] [2021-03-10 21:41:30,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:41:30,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:30,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:41:30,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:41:30,465 INFO L87 Difference]: Start difference. First operand 19458 states and 127619 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-03-10 21:41:31,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:31,343 INFO L93 Difference]: Finished difference Result 43790 states and 285373 transitions. [2021-03-10 21:41:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:41:31,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 33 [2021-03-10 21:41:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:31,536 INFO L225 Difference]: With dead ends: 43790 [2021-03-10 21:41:31,536 INFO L226 Difference]: Without dead ends: 42141 [2021-03-10 21:41:31,536 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:41:31,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42141 states. [2021-03-10 21:41:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42141 to 31980. [2021-03-10 21:41:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31980 states, 31979 states have (on average 6.798211326182807) internal successors, (217400), 31979 states have internal predecessors, (217400), 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) [2021-03-10 21:41:32,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31980 states to 31980 states and 217400 transitions. [2021-03-10 21:41:32,986 INFO L78 Accepts]: Start accepts. Automaton has 31980 states and 217400 transitions. Word has length 33 [2021-03-10 21:41:32,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:32,986 INFO L480 AbstractCegarLoop]: Abstraction has 31980 states and 217400 transitions. [2021-03-10 21:41:32,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-03-10 21:41:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 31980 states and 217400 transitions. [2021-03-10 21:41:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-03-10 21:41:33,086 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:33,086 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:33,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-03-10 21:41:33,286 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:33,287 INFO L82 PathProgramCache]: Analyzing trace with hash 692395924, now seen corresponding path program 27 times [2021-03-10 21:41:33,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:33,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662659665] [2021-03-10 21:41:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-03-10 21:41:33,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662659665] [2021-03-10 21:41:33,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802489203] [2021-03-10 21:41:33,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:33,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:41:33,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:33,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 21:41:33,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-03-10 21:41:33,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:33,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-03-10 21:41:33,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795257627] [2021-03-10 21:41:33,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:41:33,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:33,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:41:33,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:41:33,491 INFO L87 Difference]: Start difference. First operand 31980 states and 217400 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 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) [2021-03-10 21:41:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:35,074 INFO L93 Difference]: Finished difference Result 78327 states and 512684 transitions. [2021-03-10 21:41:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 21:41:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 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 33 [2021-03-10 21:41:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:35,447 INFO L225 Difference]: With dead ends: 78327 [2021-03-10 21:41:35,447 INFO L226 Difference]: Without dead ends: 73049 [2021-03-10 21:41:35,448 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 263.1ms TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2021-03-10 21:41:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73049 states. [2021-03-10 21:41:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73049 to 37920. [2021-03-10 21:41:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37920 states, 37919 states have (on average 6.966454811572035) internal successors, (264161), 37919 states have internal predecessors, (264161), 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) [2021-03-10 21:41:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37920 states to 37920 states and 264161 transitions. [2021-03-10 21:41:37,227 INFO L78 Accepts]: Start accepts. Automaton has 37920 states and 264161 transitions. Word has length 33 [2021-03-10 21:41:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:37,227 INFO L480 AbstractCegarLoop]: Abstraction has 37920 states and 264161 transitions. [2021-03-10 21:41:37,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 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) [2021-03-10 21:41:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 37920 states and 264161 transitions. [2021-03-10 21:41:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-03-10 21:41:37,325 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:37,325 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:37,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:37,526 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:37,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:37,526 INFO L82 PathProgramCache]: Analyzing trace with hash -694764650, now seen corresponding path program 28 times [2021-03-10 21:41:37,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:37,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978483439] [2021-03-10 21:41:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-03-10 21:41:37,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978483439] [2021-03-10 21:41:37,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478125162] [2021-03-10 21:41:37,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:37,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:41:37,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:37,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:41:37,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:41:37,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:37,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2021-03-10 21:41:37,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032079506] [2021-03-10 21:41:37,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:41:37,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:37,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:41:37,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:41:37,683 INFO L87 Difference]: Start difference. First operand 37920 states and 264161 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-03-10 21:41:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:39,241 INFO L93 Difference]: Finished difference Result 100012 states and 667139 transitions. [2021-03-10 21:41:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 21:41:39,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 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 33 [2021-03-10 21:41:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:40,243 INFO L225 Difference]: With dead ends: 100012 [2021-03-10 21:41:40,243 INFO L226 Difference]: Without dead ends: 92787 [2021-03-10 21:41:40,243 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:41:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92787 states. [2021-03-10 21:41:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92787 to 58925. [2021-03-10 21:41:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58925 states, 58924 states have (on average 7.206706944538728) internal successors, (424648), 58924 states have internal predecessors, (424648), 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) [2021-03-10 21:41:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58925 states to 58925 states and 424648 transitions. [2021-03-10 21:41:42,469 INFO L78 Accepts]: Start accepts. Automaton has 58925 states and 424648 transitions. Word has length 33 [2021-03-10 21:41:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:42,469 INFO L480 AbstractCegarLoop]: Abstraction has 58925 states and 424648 transitions. [2021-03-10 21:41:42,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-03-10 21:41:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 58925 states and 424648 transitions. [2021-03-10 21:41:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 21:41:42,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:42,648 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:42,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-03-10 21:41:42,848 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:42,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1092657503, now seen corresponding path program 29 times [2021-03-10 21:41:42,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:42,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722952499] [2021-03-10 21:41:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:41:42,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722952499] [2021-03-10 21:41:42,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008063436] [2021-03-10 21:41:42,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:42,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-03-10 21:41:42,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:42,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:41:42,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:41:43,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:43,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:41:43,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503168888] [2021-03-10 21:41:43,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:41:43,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:43,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:41:43,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:41:43,025 INFO L87 Difference]: Start difference. First operand 58925 states and 424648 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-03-10 21:41:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:44,589 INFO L93 Difference]: Finished difference Result 86764 states and 598397 transitions. [2021-03-10 21:41:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:41:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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 34 [2021-03-10 21:41:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:44,961 INFO L225 Difference]: With dead ends: 86764 [2021-03-10 21:41:44,961 INFO L226 Difference]: Without dead ends: 74248 [2021-03-10 21:41:44,961 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:41:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74248 states. [2021-03-10 21:41:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74248 to 55757. [2021-03-10 21:41:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55757 states, 55756 states have (on average 7.122354544802353) internal successors, (397114), 55756 states have internal predecessors, (397114), 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) [2021-03-10 21:41:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55757 states to 55757 states and 397114 transitions. [2021-03-10 21:41:47,810 INFO L78 Accepts]: Start accepts. Automaton has 55757 states and 397114 transitions. Word has length 34 [2021-03-10 21:41:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:47,810 INFO L480 AbstractCegarLoop]: Abstraction has 55757 states and 397114 transitions. [2021-03-10 21:41:47,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-03-10 21:41:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 55757 states and 397114 transitions. [2021-03-10 21:41:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 21:41:47,985 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:47,985 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:48,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-03-10 21:41:48,186 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:48,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:48,186 INFO L82 PathProgramCache]: Analyzing trace with hash 759094517, now seen corresponding path program 30 times [2021-03-10 21:41:48,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:48,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984918718] [2021-03-10 21:41:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:41:48,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984918718] [2021-03-10 21:41:48,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297838560] [2021-03-10 21:41:48,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:48,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:41:48,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:48,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:41:48,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:41:48,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:48,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:41:48,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70710623] [2021-03-10 21:41:48,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:41:48,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:48,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:41:48,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:41:48,379 INFO L87 Difference]: Start difference. First operand 55757 states and 397114 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 21:41:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:49,751 INFO L93 Difference]: Finished difference Result 92909 states and 637114 transitions. [2021-03-10 21:41:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:41:49,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 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 34 [2021-03-10 21:41:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:50,154 INFO L225 Difference]: With dead ends: 92909 [2021-03-10 21:41:50,154 INFO L226 Difference]: Without dead ends: 68099 [2021-03-10 21:41:50,154 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 45.3ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68099 states. [2021-03-10 21:41:52,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68099 to 55757. [2021-03-10 21:41:52,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55757 states, 55756 states have (on average 7.012267738001292) internal successors, (390976), 55756 states have internal predecessors, (390976), 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) [2021-03-10 21:41:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55757 states to 55757 states and 390976 transitions. [2021-03-10 21:41:53,234 INFO L78 Accepts]: Start accepts. Automaton has 55757 states and 390976 transitions. Word has length 34 [2021-03-10 21:41:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:53,234 INFO L480 AbstractCegarLoop]: Abstraction has 55757 states and 390976 transitions. [2021-03-10 21:41:53,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 21:41:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 55757 states and 390976 transitions. [2021-03-10 21:41:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 21:41:53,402 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:53,402 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:53,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-03-10 21:41:53,603 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1460159095, now seen corresponding path program 31 times [2021-03-10 21:41:53,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:53,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561940695] [2021-03-10 21:41:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:41:53,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561940695] [2021-03-10 21:41:53,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681728360] [2021-03-10 21:41:53,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:53,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:41:53,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:41:53,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:53,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:41:53,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343910211] [2021-03-10 21:41:53,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:41:53,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:53,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:41:53,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:41:53,772 INFO L87 Difference]: Start difference. First operand 55757 states and 390976 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:41:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:55,099 INFO L93 Difference]: Finished difference Result 86696 states and 588891 transitions. [2021-03-10 21:41:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:41:55,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 34 [2021-03-10 21:41:55,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:41:55,496 INFO L225 Difference]: With dead ends: 86696 [2021-03-10 21:41:55,496 INFO L226 Difference]: Without dead ends: 71102 [2021-03-10 21:41:55,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:41:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71102 states. [2021-03-10 21:41:57,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71102 to 49619. [2021-03-10 21:41:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49619 states, 49618 states have (on average 6.850961344673304) internal successors, (339931), 49618 states have internal predecessors, (339931), 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) [2021-03-10 21:41:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49619 states to 49619 states and 339931 transitions. [2021-03-10 21:41:57,512 INFO L78 Accepts]: Start accepts. Automaton has 49619 states and 339931 transitions. Word has length 34 [2021-03-10 21:41:57,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:41:57,512 INFO L480 AbstractCegarLoop]: Abstraction has 49619 states and 339931 transitions. [2021-03-10 21:41:57,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:41:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 49619 states and 339931 transitions. [2021-03-10 21:41:57,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 21:41:57,671 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:41:57,671 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:41:57,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-03-10 21:41:57,871 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:41:57,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:41:57,872 INFO L82 PathProgramCache]: Analyzing trace with hash -351716319, now seen corresponding path program 32 times [2021-03-10 21:41:57,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:41:57,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371247434] [2021-03-10 21:41:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:41:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:41:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:41:57,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371247434] [2021-03-10 21:41:57,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428052882] [2021-03-10 21:41:57,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:41:57,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:41:57,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:41:57,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:41:57,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:41:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:41:58,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:41:58,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:41:58,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531921176] [2021-03-10 21:41:58,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:41:58,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:41:58,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:41:58,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:41:58,023 INFO L87 Difference]: Start difference. First operand 49619 states and 339931 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:41:59,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:41:59,649 INFO L93 Difference]: Finished difference Result 74312 states and 504788 transitions. [2021-03-10 21:41:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:41:59,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 34 [2021-03-10 21:41:59,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:42:00,014 INFO L225 Difference]: With dead ends: 74312 [2021-03-10 21:42:00,014 INFO L226 Difference]: Without dead ends: 61961 [2021-03-10 21:42:00,015 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:42:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61961 states. [2021-03-10 21:42:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61961 to 46550. [2021-03-10 21:42:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46550 states, 46549 states have (on average 6.78732088766676) internal successors, (315943), 46549 states have internal predecessors, (315943), 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) [2021-03-10 21:42:01,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46550 states to 46550 states and 315943 transitions. [2021-03-10 21:42:01,871 INFO L78 Accepts]: Start accepts. Automaton has 46550 states and 315943 transitions. Word has length 34 [2021-03-10 21:42:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:42:01,872 INFO L480 AbstractCegarLoop]: Abstraction has 46550 states and 315943 transitions. [2021-03-10 21:42:01,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-03-10 21:42:01,872 INFO L276 IsEmpty]: Start isEmpty. Operand 46550 states and 315943 transitions. [2021-03-10 21:42:02,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 21:42:02,012 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:42:02,012 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:42:02,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-03-10 21:42:02,214 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:42:02,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:42:02,214 INFO L82 PathProgramCache]: Analyzing trace with hash -744743329, now seen corresponding path program 33 times [2021-03-10 21:42:02,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:42:02,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968345305] [2021-03-10 21:42:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:42:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:42:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:42:02,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968345305] [2021-03-10 21:42:02,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540900725] [2021-03-10 21:42:02,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:02,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:42:02,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:42:02,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 21:42:02,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:42:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:42:02,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:42:02,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 21:42:02,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188283859] [2021-03-10 21:42:02,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:42:02,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:42:02,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:42:02,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:42:02,369 INFO L87 Difference]: Start difference. First operand 46550 states and 315943 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-03-10 21:42:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:42:03,514 INFO L93 Difference]: Finished difference Result 65072 states and 441884 transitions. [2021-03-10 21:42:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:42:03,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 34 [2021-03-10 21:42:03,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:42:03,803 INFO L225 Difference]: With dead ends: 65072 [2021-03-10 21:42:03,803 INFO L226 Difference]: Without dead ends: 58826 [2021-03-10 21:42:03,804 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:42:03,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58826 states. [2021-03-10 21:42:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58826 to 52688. [2021-03-10 21:42:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52688 states, 52687 states have (on average 6.79068840510942) internal successors, (357781), 52687 states have internal predecessors, (357781), 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) [2021-03-10 21:42:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52688 states to 52688 states and 357781 transitions. [2021-03-10 21:42:06,682 INFO L78 Accepts]: Start accepts. Automaton has 52688 states and 357781 transitions. Word has length 34 [2021-03-10 21:42:06,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:42:06,682 INFO L480 AbstractCegarLoop]: Abstraction has 52688 states and 357781 transitions. [2021-03-10 21:42:06,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-03-10 21:42:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 52688 states and 357781 transitions. [2021-03-10 21:42:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-03-10 21:42:06,939 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:42:06,939 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:42:07,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-03-10 21:42:07,155 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:42:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:42:07,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1952484644, now seen corresponding path program 34 times [2021-03-10 21:42:07,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:42:07,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506555691] [2021-03-10 21:42:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:42:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:42:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-03-10 21:42:07,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506555691] [2021-03-10 21:42:07,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539989254] [2021-03-10 21:42:07,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:07,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:42:07,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:42:07,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 21:42:07,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:42:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:42:07,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:42:07,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-03-10 21:42:07,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203044270] [2021-03-10 21:42:07,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:42:07,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:42:07,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:42:07,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:42:07,395 INFO L87 Difference]: Start difference. First operand 52688 states and 357781 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 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) [2021-03-10 21:42:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:42:09,859 INFO L93 Difference]: Finished difference Result 164151 states and 1080949 transitions. [2021-03-10 21:42:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 21:42:09,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 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 35 [2021-03-10 21:42:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:42:10,757 INFO L225 Difference]: With dead ends: 164151 [2021-03-10 21:42:10,758 INFO L226 Difference]: Without dead ends: 155058 [2021-03-10 21:42:10,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 278.9ms TimeCoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2021-03-10 21:42:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155058 states. [2021-03-10 21:42:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155058 to 98860. [2021-03-10 21:42:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98860 states, 98859 states have (on average 7.100709090725174) internal successors, (701969), 98859 states have internal predecessors, (701969), 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) [2021-03-10 21:42:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98860 states to 98860 states and 701969 transitions. [2021-03-10 21:42:15,916 INFO L78 Accepts]: Start accepts. Automaton has 98860 states and 701969 transitions. Word has length 35 [2021-03-10 21:42:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:42:15,916 INFO L480 AbstractCegarLoop]: Abstraction has 98860 states and 701969 transitions. [2021-03-10 21:42:15,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 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) [2021-03-10 21:42:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 98860 states and 701969 transitions. [2021-03-10 21:42:17,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 21:42:17,074 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:42:17,075 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:42:17,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-03-10 21:42:17,287 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:42:17,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:42:17,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1072335793, now seen corresponding path program 35 times [2021-03-10 21:42:17,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:42:17,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613746497] [2021-03-10 21:42:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:42:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:42:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-03-10 21:42:17,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613746497] [2021-03-10 21:42:17,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161916400] [2021-03-10 21:42:17,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:17,356 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:42:17,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:42:17,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:42:17,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:42:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-03-10 21:42:17,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:42:17,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2021-03-10 21:42:17,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106688007] [2021-03-10 21:42:17,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 21:42:17,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:42:17,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 21:42:17,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:42:17,488 INFO L87 Difference]: Start difference. First operand 98860 states and 701969 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 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) [2021-03-10 21:42:19,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:42:19,487 INFO L93 Difference]: Finished difference Result 144978 states and 989665 transitions. [2021-03-10 21:42:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 21:42:19,488 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 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 36 [2021-03-10 21:42:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:42:20,275 INFO L225 Difference]: With dead ends: 144978 [2021-03-10 21:42:20,275 INFO L226 Difference]: Without dead ends: 131912 [2021-03-10 21:42:20,275 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 77.2ms TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:42:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131912 states. [2021-03-10 21:42:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131912 to 102815. [2021-03-10 21:42:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102815 states, 102814 states have (on average 7.039090007197464) internal successors, (723717), 102814 states have internal predecessors, (723717), 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) [2021-03-10 21:42:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102815 states to 102815 states and 723717 transitions. [2021-03-10 21:42:25,566 INFO L78 Accepts]: Start accepts. Automaton has 102815 states and 723717 transitions. Word has length 36 [2021-03-10 21:42:25,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:42:25,566 INFO L480 AbstractCegarLoop]: Abstraction has 102815 states and 723717 transitions. [2021-03-10 21:42:25,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 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) [2021-03-10 21:42:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 102815 states and 723717 transitions. [2021-03-10 21:42:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 21:42:25,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:42:25,949 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:42:26,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:26,150 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:42:26,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:42:26,150 INFO L82 PathProgramCache]: Analyzing trace with hash 776425721, now seen corresponding path program 36 times [2021-03-10 21:42:26,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:42:26,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583190264] [2021-03-10 21:42:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:42:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:42:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-03-10 21:42:26,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583190264] [2021-03-10 21:42:26,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098459520] [2021-03-10 21:42:26,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:26,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:42:26,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:42:26,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:42:26,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:42:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-03-10 21:42:26,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:42:26,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-03-10 21:42:26,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519432347] [2021-03-10 21:42:26,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:42:26,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:42:26,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:42:26,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:42:26,430 INFO L87 Difference]: Start difference. First operand 102815 states and 723717 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 13 states have internal predecessors, (58), 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) [2021-03-10 21:42:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:42:28,730 INFO L93 Difference]: Finished difference Result 163299 states and 1102914 transitions. [2021-03-10 21:42:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:42:28,731 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 13 states have internal predecessors, (58), 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 36 [2021-03-10 21:42:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:42:30,092 INFO L225 Difference]: With dead ends: 163299 [2021-03-10 21:42:30,092 INFO L226 Difference]: Without dead ends: 120510 [2021-03-10 21:42:30,092 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 189.7ms TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:42:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120510 states. [2021-03-10 21:42:33,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120510 to 87490. [2021-03-10 21:42:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87490 states, 87489 states have (on average 7.016344911931785) internal successors, (613853), 87489 states have internal predecessors, (613853), 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) [2021-03-10 21:42:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87490 states to 87490 states and 613853 transitions. [2021-03-10 21:42:34,168 INFO L78 Accepts]: Start accepts. Automaton has 87490 states and 613853 transitions. Word has length 36 [2021-03-10 21:42:34,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:42:34,168 INFO L480 AbstractCegarLoop]: Abstraction has 87490 states and 613853 transitions. [2021-03-10 21:42:34,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 13 states have internal predecessors, (58), 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) [2021-03-10 21:42:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 87490 states and 613853 transitions. [2021-03-10 21:42:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 21:42:34,468 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:42:34,468 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:42:34,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:34,669 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:42:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:42:34,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2001694799, now seen corresponding path program 37 times [2021-03-10 21:42:34,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:42:34,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961281035] [2021-03-10 21:42:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:42:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:42:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-03-10 21:42:34,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961281035] [2021-03-10 21:42:34,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899236294] [2021-03-10 21:42:34,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:42:34,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:42:34,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:42:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-03-10 21:42:34,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:42:34,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2021-03-10 21:42:34,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115061090] [2021-03-10 21:42:34,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 21:42:34,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:42:34,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 21:42:34,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:42:34,892 INFO L87 Difference]: Start difference. First operand 87490 states and 613853 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 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) [2021-03-10 21:42:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:42:37,535 INFO L93 Difference]: Finished difference Result 148260 states and 994640 transitions. [2021-03-10 21:42:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:42:37,536 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 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 36 [2021-03-10 21:42:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:42:38,302 INFO L225 Difference]: With dead ends: 148260 [2021-03-10 21:42:38,302 INFO L226 Difference]: Without dead ends: 119736 [2021-03-10 21:42:38,302 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:42:38,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119736 states. [2021-03-10 21:42:41,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119736 to 88381. [2021-03-10 21:42:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88381 states, 88380 states have (on average 6.939499886852229) internal successors, (613313), 88380 states have internal predecessors, (613313), 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) [2021-03-10 21:42:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88381 states to 88381 states and 613313 transitions. [2021-03-10 21:42:42,306 INFO L78 Accepts]: Start accepts. Automaton has 88381 states and 613313 transitions. Word has length 36 [2021-03-10 21:42:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:42:42,306 INFO L480 AbstractCegarLoop]: Abstraction has 88381 states and 613313 transitions. [2021-03-10 21:42:42,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 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) [2021-03-10 21:42:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 88381 states and 613313 transitions. [2021-03-10 21:42:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 21:42:42,627 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:42:42,628 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:42:42,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:42,828 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:42:42,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:42:42,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1133140203, now seen corresponding path program 38 times [2021-03-10 21:42:42,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:42:42,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641452884] [2021-03-10 21:42:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:42:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:42:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-03-10 21:42:42,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641452884] [2021-03-10 21:42:42,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333840101] [2021-03-10 21:42:42,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:42,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:42:42,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:42:42,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:42:42,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:42:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-03-10 21:42:43,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:42:43,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2021-03-10 21:42:43,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031028487] [2021-03-10 21:42:43,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 21:42:43,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:42:43,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 21:42:43,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:42:43,060 INFO L87 Difference]: Start difference. First operand 88381 states and 613313 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 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) [2021-03-10 21:42:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:42:45,945 INFO L93 Difference]: Finished difference Result 154610 states and 1027932 transitions. [2021-03-10 21:42:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 21:42:45,945 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 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 36 [2021-03-10 21:42:45,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:42:46,698 INFO L225 Difference]: With dead ends: 154610 [2021-03-10 21:42:46,698 INFO L226 Difference]: Without dead ends: 121821 [2021-03-10 21:42:46,698 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:42:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121821 states. [2021-03-10 21:42:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121821 to 88381. [2021-03-10 21:42:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88381 states, 88380 states have (on average 6.9149015614392395) internal successors, (611139), 88380 states have internal predecessors, (611139), 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) [2021-03-10 21:42:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88381 states to 88381 states and 611139 transitions. [2021-03-10 21:42:50,553 INFO L78 Accepts]: Start accepts. Automaton has 88381 states and 611139 transitions. Word has length 36 [2021-03-10 21:42:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:42:50,553 INFO L480 AbstractCegarLoop]: Abstraction has 88381 states and 611139 transitions. [2021-03-10 21:42:50,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 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) [2021-03-10 21:42:50,553 INFO L276 IsEmpty]: Start isEmpty. Operand 88381 states and 611139 transitions. [2021-03-10 21:42:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 21:42:51,699 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:42:51,700 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:42:51,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-03-10 21:42:51,900 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:42:51,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:42:51,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1642613293, now seen corresponding path program 39 times [2021-03-10 21:42:51,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:42:51,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527744834] [2021-03-10 21:42:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:42:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:42:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-03-10 21:42:51,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527744834] [2021-03-10 21:42:51,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136623614] [2021-03-10 21:42:51,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:42:52,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:42:52,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:42:52,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 21:42:52,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:42:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-03-10 21:42:52,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:42:52,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2021-03-10 21:42:52,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002231315] [2021-03-10 21:42:52,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:42:52,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:42:52,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:42:52,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:42:52,139 INFO L87 Difference]: Start difference. First operand 88381 states and 611139 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 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) [2021-03-10 21:42:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:42:55,222 INFO L93 Difference]: Finished difference Result 188739 states and 1249534 transitions. [2021-03-10 21:42:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 21:42:55,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 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 36 [2021-03-10 21:42:55,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:42:56,957 INFO L225 Difference]: With dead ends: 188739 [2021-03-10 21:42:56,957 INFO L226 Difference]: Without dead ends: 177820 [2021-03-10 21:42:56,958 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 461.8ms TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 21:42:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177820 states. [2021-03-10 21:43:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177820 to 108631. [2021-03-10 21:43:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108631 states, 108630 states have (on average 6.994228113780723) internal successors, (759783), 108630 states have internal predecessors, (759783), 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) [2021-03-10 21:43:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108631 states to 108631 states and 759783 transitions. [2021-03-10 21:43:04,005 INFO L78 Accepts]: Start accepts. Automaton has 108631 states and 759783 transitions. Word has length 36 [2021-03-10 21:43:04,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:43:04,005 INFO L480 AbstractCegarLoop]: Abstraction has 108631 states and 759783 transitions. [2021-03-10 21:43:04,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 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) [2021-03-10 21:43:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 108631 states and 759783 transitions. [2021-03-10 21:43:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:43:04,534 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:43:04,534 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:43:04,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:43:04,747 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:43:04,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:43:04,748 INFO L82 PathProgramCache]: Analyzing trace with hash -674266402, now seen corresponding path program 40 times [2021-03-10 21:43:04,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:43:04,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039074096] [2021-03-10 21:43:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:43:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:43:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-03-10 21:43:04,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039074096] [2021-03-10 21:43:04,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735995892] [2021-03-10 21:43:04,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:43:04,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:43:04,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:43:04,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:43:04,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:43:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:43:05,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:43:05,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2021-03-10 21:43:05,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302000298] [2021-03-10 21:43:05,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:43:05,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:43:05,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:43:05,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:43:05,030 INFO L87 Difference]: Start difference. First operand 108631 states and 759783 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2021-03-10 21:43:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:43:08,292 INFO L93 Difference]: Finished difference Result 223476 states and 1495121 transitions. [2021-03-10 21:43:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 21:43:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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 [2021-03-10 21:43:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:43:09,330 INFO L225 Difference]: With dead ends: 223476 [2021-03-10 21:43:09,331 INFO L226 Difference]: Without dead ends: 177390 [2021-03-10 21:43:09,331 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 160.9ms TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:43:10,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177390 states. [2021-03-10 21:43:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177390 to 106167. [2021-03-10 21:43:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106167 states, 106166 states have (on average 6.964772149275663) internal successors, (739422), 106166 states have internal predecessors, (739422), 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) [2021-03-10 21:43:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106167 states to 106167 states and 739422 transitions. [2021-03-10 21:43:15,150 INFO L78 Accepts]: Start accepts. Automaton has 106167 states and 739422 transitions. Word has length 37 [2021-03-10 21:43:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:43:15,150 INFO L480 AbstractCegarLoop]: Abstraction has 106167 states and 739422 transitions. [2021-03-10 21:43:15,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2021-03-10 21:43:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 106167 states and 739422 transitions. [2021-03-10 21:43:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:43:15,656 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:43:15,656 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:43:15,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:43:15,856 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:43:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:43:15,857 INFO L82 PathProgramCache]: Analyzing trace with hash 481122298, now seen corresponding path program 41 times [2021-03-10 21:43:15,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:43:15,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808530044] [2021-03-10 21:43:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:43:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:43:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:43:15,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808530044] [2021-03-10 21:43:15,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774224483] [2021-03-10 21:43:15,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:43:15,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:43:15,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:43:15,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:43:15,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:43:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:43:16,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:43:16,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2021-03-10 21:43:16,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819448959] [2021-03-10 21:43:16,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:43:16,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:43:16,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:43:16,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:43:16,099 INFO L87 Difference]: Start difference. First operand 106167 states and 739422 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2021-03-10 21:43:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:43:18,416 INFO L93 Difference]: Finished difference Result 191961 states and 1284744 transitions. [2021-03-10 21:43:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:43:18,416 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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 [2021-03-10 21:43:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:43:19,982 INFO L225 Difference]: With dead ends: 191961 [2021-03-10 21:43:19,982 INFO L226 Difference]: Without dead ends: 159123 [2021-03-10 21:43:19,983 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:43:20,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159123 states. [2021-03-10 21:43:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159123 to 108827. [2021-03-10 21:43:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108827 states, 108826 states have (on average 6.872089390403029) internal successors, (747862), 108826 states have internal predecessors, (747862), 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) [2021-03-10 21:43:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108827 states to 108827 states and 747862 transitions. [2021-03-10 21:43:25,080 INFO L78 Accepts]: Start accepts. Automaton has 108827 states and 747862 transitions. Word has length 37 [2021-03-10 21:43:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:43:25,080 INFO L480 AbstractCegarLoop]: Abstraction has 108827 states and 747862 transitions. [2021-03-10 21:43:25,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2021-03-10 21:43:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 108827 states and 747862 transitions. [2021-03-10 21:43:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:43:25,471 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:43:25,471 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:43:25,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-03-10 21:43:25,672 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:43:25,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:43:25,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1867325692, now seen corresponding path program 42 times [2021-03-10 21:43:25,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:43:25,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542299463] [2021-03-10 21:43:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:43:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:43:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-03-10 21:43:25,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542299463] [2021-03-10 21:43:25,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134087142] [2021-03-10 21:43:25,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:43:25,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-03-10 21:43:25,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:43:25,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:43:25,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:43:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-03-10 21:43:25,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:43:25,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-03-10 21:43:25,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775367905] [2021-03-10 21:43:25,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:43:25,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:43:25,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:43:25,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:43:25,917 INFO L87 Difference]: Start difference. First operand 108827 states and 747862 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-03-10 21:43:29,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:43:29,460 INFO L93 Difference]: Finished difference Result 190091 states and 1240020 transitions. [2021-03-10 21:43:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-10 21:43:29,461 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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 [2021-03-10 21:43:29,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:43:30,201 INFO L225 Difference]: With dead ends: 190091 [2021-03-10 21:43:30,202 INFO L226 Difference]: Without dead ends: 137534 [2021-03-10 21:43:30,202 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 540.8ms TimeCoverageRelationStatistics Valid=334, Invalid=3206, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 21:43:30,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137534 states. [2021-03-10 21:43:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137534 to 99038. [2021-03-10 21:43:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99038 states, 99037 states have (on average 6.792249361349799) internal successors, (672684), 99037 states have internal predecessors, (672684), 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) [2021-03-10 21:43:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99038 states to 99038 states and 672684 transitions. [2021-03-10 21:43:35,088 INFO L78 Accepts]: Start accepts. Automaton has 99038 states and 672684 transitions. Word has length 37 [2021-03-10 21:43:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:43:35,088 INFO L480 AbstractCegarLoop]: Abstraction has 99038 states and 672684 transitions. [2021-03-10 21:43:35,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-03-10 21:43:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 99038 states and 672684 transitions. [2021-03-10 21:43:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:43:35,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:43:35,445 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:43:35,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-03-10 21:43:35,645 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:43:35,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:43:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1878928166, now seen corresponding path program 43 times [2021-03-10 21:43:35,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:43:35,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055741715] [2021-03-10 21:43:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:43:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:43:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:43:35,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055741715] [2021-03-10 21:43:35,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135403735] [2021-03-10 21:43:35,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:43:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:43:35,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:43:35,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:43:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:43:35,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:43:35,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:43:35,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272462390] [2021-03-10 21:43:35,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:43:35,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:43:35,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:43:35,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:43:35,908 INFO L87 Difference]: Start difference. First operand 99038 states and 672684 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 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) [2021-03-10 21:43:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:43:37,988 INFO L93 Difference]: Finished difference Result 147129 states and 986771 transitions. [2021-03-10 21:43:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 21:43:37,988 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 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 [2021-03-10 21:43:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:43:39,332 INFO L225 Difference]: With dead ends: 147129 [2021-03-10 21:43:39,333 INFO L226 Difference]: Without dead ends: 140734 [2021-03-10 21:43:39,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 204.0ms TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-03-10 21:43:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140734 states. [2021-03-10 21:43:42,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140734 to 99038. [2021-03-10 21:43:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99038 states, 99037 states have (on average 6.792249361349799) internal successors, (672684), 99037 states have internal predecessors, (672684), 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) [2021-03-10 21:43:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99038 states to 99038 states and 672684 transitions. [2021-03-10 21:43:43,581 INFO L78 Accepts]: Start accepts. Automaton has 99038 states and 672684 transitions. Word has length 37 [2021-03-10 21:43:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:43:43,581 INFO L480 AbstractCegarLoop]: Abstraction has 99038 states and 672684 transitions. [2021-03-10 21:43:43,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 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) [2021-03-10 21:43:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 99038 states and 672684 transitions. [2021-03-10 21:43:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:43:43,900 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:43:43,900 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:43:44,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-03-10 21:43:44,101 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:43:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:43:44,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1505483020, now seen corresponding path program 44 times [2021-03-10 21:43:44,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:43:44,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502341220] [2021-03-10 21:43:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:43:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:43:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:43:45,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502341220] [2021-03-10 21:43:45,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407475203] [2021-03-10 21:43:45,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:43:45,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:43:45,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:43:45,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:43:45,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:43:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:43:45,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:43:45,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:43:45,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849759066] [2021-03-10 21:43:45,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:43:45,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:43:45,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:43:45,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:43:45,267 INFO L87 Difference]: Start difference. First operand 99038 states and 672684 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 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) [2021-03-10 21:43:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:43:48,047 INFO L93 Difference]: Finished difference Result 210905 states and 1398862 transitions. [2021-03-10 21:43:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 21:43:48,048 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 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 [2021-03-10 21:43:48,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:43:50,105 INFO L225 Difference]: With dead ends: 210905 [2021-03-10 21:43:50,106 INFO L226 Difference]: Without dead ends: 177289 [2021-03-10 21:43:50,106 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 212.2ms TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-03-10 21:43:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177289 states. [2021-03-10 21:43:53,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177289 to 87818. [2021-03-10 21:43:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87818 states, 87817 states have (on average 6.753339330653518) internal successors, (593058), 87817 states have internal predecessors, (593058), 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) [2021-03-10 21:43:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87818 states to 87818 states and 593058 transitions. [2021-03-10 21:43:55,127 INFO L78 Accepts]: Start accepts. Automaton has 87818 states and 593058 transitions. Word has length 37 [2021-03-10 21:43:55,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:43:55,143 INFO L480 AbstractCegarLoop]: Abstraction has 87818 states and 593058 transitions. [2021-03-10 21:43:55,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 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) [2021-03-10 21:43:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 87818 states and 593058 transitions. [2021-03-10 21:43:55,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:43:55,615 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:43:55,616 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:43:55,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:43:55,833 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:43:55,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:43:55,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1404559502, now seen corresponding path program 45 times [2021-03-10 21:43:55,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:43:55,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039773699] [2021-03-10 21:43:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:43:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:43:55,874 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:43:55,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039773699] [2021-03-10 21:43:55,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732016019] [2021-03-10 21:43:55,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:43:55,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:43:55,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:43:55,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:43:55,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:43:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-03-10 21:43:56,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:43:56,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-03-10 21:43:56,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125439101] [2021-03-10 21:43:56,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:43:56,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:43:56,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:43:56,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:43:56,069 INFO L87 Difference]: Start difference. First operand 87818 states and 593058 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-03-10 21:44:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:44:00,181 INFO L93 Difference]: Finished difference Result 192010 states and 1246834 transitions. [2021-03-10 21:44:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-03-10 21:44:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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 [2021-03-10 21:44:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:44:01,172 INFO L225 Difference]: With dead ends: 192010 [2021-03-10 21:44:01,172 INFO L226 Difference]: Without dead ends: 178847 [2021-03-10 21:44:01,173 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 583.9ms TimeCoverageRelationStatistics Valid=263, Invalid=3397, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 21:44:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178847 states. [2021-03-10 21:44:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178847 to 100736. [2021-03-10 21:44:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100736 states, 100735 states have (on average 6.7786667990271505) internal successors, (682849), 100735 states have internal predecessors, (682849), 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) [2021-03-10 21:44:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100736 states to 100736 states and 682849 transitions. [2021-03-10 21:44:06,353 INFO L78 Accepts]: Start accepts. Automaton has 100736 states and 682849 transitions. Word has length 37 [2021-03-10 21:44:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:44:06,353 INFO L480 AbstractCegarLoop]: Abstraction has 100736 states and 682849 transitions. [2021-03-10 21:44:06,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-03-10 21:44:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 100736 states and 682849 transitions. [2021-03-10 21:44:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:44:06,672 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:44:06,672 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:44:06,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:44:06,873 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:44:06,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:44:06,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1180951440, now seen corresponding path program 46 times [2021-03-10 21:44:06,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:44:06,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967564253] [2021-03-10 21:44:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:44:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:44:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:44:06,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967564253] [2021-03-10 21:44:06,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064960799] [2021-03-10 21:44:06,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:44:06,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:44:06,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:44:06,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:44:06,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:44:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:44:07,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:44:07,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2021-03-10 21:44:07,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106136321] [2021-03-10 21:44:07,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 21:44:07,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:44:07,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 21:44:07,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:44:07,082 INFO L87 Difference]: Start difference. First operand 100736 states and 682849 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 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) [2021-03-10 21:44:09,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:44:09,700 INFO L93 Difference]: Finished difference Result 180763 states and 1186152 transitions. [2021-03-10 21:44:09,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 21:44:09,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 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 [2021-03-10 21:44:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:44:10,533 INFO L225 Difference]: With dead ends: 180763 [2021-03-10 21:44:10,533 INFO L226 Difference]: Without dead ends: 148324 [2021-03-10 21:44:10,533 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:44:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148324 states. [2021-03-10 21:44:13,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148324 to 100736. [2021-03-10 21:44:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100736 states, 100735 states have (on average 6.763855660892441) internal successors, (681357), 100735 states have internal predecessors, (681357), 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) [2021-03-10 21:44:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100736 states to 100736 states and 681357 transitions. [2021-03-10 21:44:15,452 INFO L78 Accepts]: Start accepts. Automaton has 100736 states and 681357 transitions. Word has length 37 [2021-03-10 21:44:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:44:15,453 INFO L480 AbstractCegarLoop]: Abstraction has 100736 states and 681357 transitions. [2021-03-10 21:44:15,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 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) [2021-03-10 21:44:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 100736 states and 681357 transitions. [2021-03-10 21:44:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:44:15,778 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:44:15,779 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:44:15,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:44:15,979 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:44:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:44:15,979 INFO L82 PathProgramCache]: Analyzing trace with hash -25562740, now seen corresponding path program 47 times [2021-03-10 21:44:15,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:44:15,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346866284] [2021-03-10 21:44:15,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:44:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:44:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:44:16,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346866284] [2021-03-10 21:44:16,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657972535] [2021-03-10 21:44:16,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:44:16,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-03-10 21:44:16,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:44:16,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:44:16,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:44:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-03-10 21:44:16,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:44:16,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-03-10 21:44:16,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861496591] [2021-03-10 21:44:16,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:44:16,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:44:16,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:44:16,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:44:16,179 INFO L87 Difference]: Start difference. First operand 100736 states and 681357 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 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) [2021-03-10 21:44:17,730 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-03-10 21:44:21,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:44:21,468 INFO L93 Difference]: Finished difference Result 257569 states and 1635717 transitions. [2021-03-10 21:44:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-03-10 21:44:21,468 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 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 [2021-03-10 21:44:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:44:22,636 INFO L225 Difference]: With dead ends: 257569 [2021-03-10 21:44:22,636 INFO L226 Difference]: Without dead ends: 207928 [2021-03-10 21:44:22,637 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2250 ImplicationChecksByTransitivity, 1447.5ms TimeCoverageRelationStatistics Valid=525, Invalid=6117, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 21:44:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207928 states. [2021-03-10 21:44:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207928 to 99243. [2021-03-10 21:44:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99243 states, 99242 states have (on average 6.815461195864654) internal successors, (676380), 99242 states have internal predecessors, (676380), 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) [2021-03-10 21:44:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99243 states to 99243 states and 676380 transitions. [2021-03-10 21:44:28,047 INFO L78 Accepts]: Start accepts. Automaton has 99243 states and 676380 transitions. Word has length 37 [2021-03-10 21:44:28,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:44:28,047 INFO L480 AbstractCegarLoop]: Abstraction has 99243 states and 676380 transitions. [2021-03-10 21:44:28,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 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) [2021-03-10 21:44:28,047 INFO L276 IsEmpty]: Start isEmpty. Operand 99243 states and 676380 transitions. [2021-03-10 21:44:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:44:29,155 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:44:29,156 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:44:29,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:44:29,377 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:44:29,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:44:29,378 INFO L82 PathProgramCache]: Analyzing trace with hash -931167312, now seen corresponding path program 48 times [2021-03-10 21:44:29,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:44:29,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794271093] [2021-03-10 21:44:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:44:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:44:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-03-10 21:44:29,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794271093] [2021-03-10 21:44:29,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822320830] [2021-03-10 21:44:29,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:44:29,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-03-10 21:44:29,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:44:29,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:44:29,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:44:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-03-10 21:44:29,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:44:29,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-03-10 21:44:29,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111318758] [2021-03-10 21:44:29,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:44:29,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:44:29,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:44:29,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:44:29,649 INFO L87 Difference]: Start difference. First operand 99243 states and 676380 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 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) [2021-03-10 21:44:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:44:34,821 INFO L93 Difference]: Finished difference Result 304259 states and 1944342 transitions. [2021-03-10 21:44:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-03-10 21:44:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 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 [2021-03-10 21:44:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:44:36,693 INFO L225 Difference]: With dead ends: 304259 [2021-03-10 21:44:36,693 INFO L226 Difference]: Without dead ends: 214089 [2021-03-10 21:44:36,694 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5022 ImplicationChecksByTransitivity, 1281.4ms TimeCoverageRelationStatistics Valid=1026, Invalid=11856, Unknown=0, NotChecked=0, Total=12882 [2021-03-10 21:44:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214089 states. [2021-03-10 21:44:42,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214089 to 120131. [2021-03-10 21:44:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120131 states, 120130 states have (on average 6.801115458253559) internal successors, (817018), 120130 states have internal predecessors, (817018), 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) [2021-03-10 21:44:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120131 states to 120131 states and 817018 transitions. [2021-03-10 21:44:44,442 INFO L78 Accepts]: Start accepts. Automaton has 120131 states and 817018 transitions. Word has length 37 [2021-03-10 21:44:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:44:44,442 INFO L480 AbstractCegarLoop]: Abstraction has 120131 states and 817018 transitions. [2021-03-10 21:44:44,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 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) [2021-03-10 21:44:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 120131 states and 817018 transitions. [2021-03-10 21:44:45,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:44:45,226 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:44:45,226 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:44:45,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-03-10 21:44:45,448 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:44:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:44:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash -944253574, now seen corresponding path program 49 times [2021-03-10 21:44:45,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:44:45,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213731743] [2021-03-10 21:44:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:44:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:44:45,531 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-03-10 21:44:45,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213731743] [2021-03-10 21:44:45,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293964861] [2021-03-10 21:44:45,532 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:44:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:44:45,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:44:45,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:44:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:44:45,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:44:45,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-03-10 21:44:45,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769775356] [2021-03-10 21:44:45,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:44:45,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:44:45,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:44:45,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:44:45,761 INFO L87 Difference]: Start difference. First operand 120131 states and 817018 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 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) [2021-03-10 21:44:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:44:52,291 INFO L93 Difference]: Finished difference Result 412845 states and 2712377 transitions. [2021-03-10 21:44:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 21:44:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 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 [2021-03-10 21:44:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:44:54,367 INFO L225 Difference]: With dead ends: 412845 [2021-03-10 21:44:54,367 INFO L226 Difference]: Without dead ends: 208159 [2021-03-10 21:44:54,367 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 469.8ms TimeCoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 21:44:54,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208159 states. [2021-03-10 21:44:58,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208159 to 81339. [2021-03-10 21:44:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81339 states, 81338 states have (on average 6.60852246182596) internal successors, (537524), 81338 states have internal predecessors, (537524), 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) [2021-03-10 21:44:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81339 states to 81339 states and 537524 transitions. [2021-03-10 21:44:59,056 INFO L78 Accepts]: Start accepts. Automaton has 81339 states and 537524 transitions. Word has length 37 [2021-03-10 21:44:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:44:59,056 INFO L480 AbstractCegarLoop]: Abstraction has 81339 states and 537524 transitions. [2021-03-10 21:44:59,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 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) [2021-03-10 21:44:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 81339 states and 537524 transitions. [2021-03-10 21:45:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 21:45:00,243 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:00,243 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:00,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:00,459 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:45:00,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:00,459 INFO L82 PathProgramCache]: Analyzing trace with hash -265285954, now seen corresponding path program 50 times [2021-03-10 21:45:00,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:00,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741741584] [2021-03-10 21:45:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:45:00,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741741584] [2021-03-10 21:45:00,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176611043] [2021-03-10 21:45:00,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:00,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:00,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:00,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:00,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-03-10 21:45:00,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:00,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-03-10 21:45:00,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380857754] [2021-03-10 21:45:00,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:45:00,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:00,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:45:00,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:45:00,692 INFO L87 Difference]: Start difference. First operand 81339 states and 537524 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 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) [2021-03-10 21:45:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:02,681 INFO L93 Difference]: Finished difference Result 100680 states and 663750 transitions. [2021-03-10 21:45:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:45:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 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 [2021-03-10 21:45:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:03,249 INFO L225 Difference]: With dead ends: 100680 [2021-03-10 21:45:03,250 INFO L226 Difference]: Without dead ends: 93275 [2021-03-10 21:45:03,250 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 191.2ms TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:45:03,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93275 states. [2021-03-10 21:45:05,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93275 to 84323. [2021-03-10 21:45:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84323 states, 84322 states have (on average 6.609212305210977) internal successors, (557302), 84322 states have internal predecessors, (557302), 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) [2021-03-10 21:45:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84323 states to 84323 states and 557302 transitions. [2021-03-10 21:45:06,758 INFO L78 Accepts]: Start accepts. Automaton has 84323 states and 557302 transitions. Word has length 37 [2021-03-10 21:45:06,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:06,758 INFO L480 AbstractCegarLoop]: Abstraction has 84323 states and 557302 transitions. [2021-03-10 21:45:06,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 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) [2021-03-10 21:45:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 84323 states and 557302 transitions. [2021-03-10 21:45:07,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 21:45:07,030 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:07,030 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:07,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-03-10 21:45:07,231 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:45:07,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:07,231 INFO L82 PathProgramCache]: Analyzing trace with hash 941176573, now seen corresponding path program 51 times [2021-03-10 21:45:07,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:07,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717639223] [2021-03-10 21:45:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-03-10 21:45:07,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717639223] [2021-03-10 21:45:07,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624349338] [2021-03-10 21:45:07,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:07,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:45:07,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:07,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:07,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:07,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:07,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-03-10 21:45:07,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048694997] [2021-03-10 21:45:07,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:07,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:07,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:07,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:07,423 INFO L87 Difference]: Start difference. First operand 84323 states and 557302 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 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) [2021-03-10 21:45:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:09,147 INFO L93 Difference]: Finished difference Result 138523 states and 880908 transitions. [2021-03-10 21:45:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:45:09,148 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 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 38 [2021-03-10 21:45:09,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:09,774 INFO L225 Difference]: With dead ends: 138523 [2021-03-10 21:45:09,774 INFO L226 Difference]: Without dead ends: 121480 [2021-03-10 21:45:09,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:45:10,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121480 states. [2021-03-10 21:45:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121480 to 82775. [2021-03-10 21:45:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82775 states, 82774 states have (on average 6.541510619276584) internal successors, (541467), 82774 states have internal predecessors, (541467), 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) [2021-03-10 21:45:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82775 states to 82775 states and 541467 transitions. [2021-03-10 21:45:13,925 INFO L78 Accepts]: Start accepts. Automaton has 82775 states and 541467 transitions. Word has length 38 [2021-03-10 21:45:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:13,926 INFO L480 AbstractCegarLoop]: Abstraction has 82775 states and 541467 transitions. [2021-03-10 21:45:13,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 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) [2021-03-10 21:45:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 82775 states and 541467 transitions. [2021-03-10 21:45:14,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 21:45:14,352 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:14,352 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:14,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-03-10 21:45:14,552 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:45:14,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:14,553 INFO L82 PathProgramCache]: Analyzing trace with hash -329563039, now seen corresponding path program 52 times [2021-03-10 21:45:14,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:14,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586456436] [2021-03-10 21:45:14,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:14,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586456436] [2021-03-10 21:45:14,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188017539] [2021-03-10 21:45:14,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:14,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:14,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:14,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:14,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:14,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:14,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-03-10 21:45:14,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189185095] [2021-03-10 21:45:14,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:14,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:14,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:14,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:14,791 INFO L87 Difference]: Start difference. First operand 82775 states and 541467 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 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) [2021-03-10 21:45:16,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:16,665 INFO L93 Difference]: Finished difference Result 127682 states and 811850 transitions. [2021-03-10 21:45:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:45:16,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 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 38 [2021-03-10 21:45:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:17,255 INFO L225 Difference]: With dead ends: 127682 [2021-03-10 21:45:17,255 INFO L226 Difference]: Without dead ends: 107548 [2021-03-10 21:45:17,255 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 73.9ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:45:17,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107548 states. [2021-03-10 21:45:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107548 to 81227. [2021-03-10 21:45:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81227 states, 81226 states have (on average 6.471228424396129) internal successors, (525632), 81226 states have internal predecessors, (525632), 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) [2021-03-10 21:45:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81227 states to 81227 states and 525632 transitions. [2021-03-10 21:45:20,663 INFO L78 Accepts]: Start accepts. Automaton has 81227 states and 525632 transitions. Word has length 38 [2021-03-10 21:45:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:20,663 INFO L480 AbstractCegarLoop]: Abstraction has 81227 states and 525632 transitions. [2021-03-10 21:45:20,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 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) [2021-03-10 21:45:20,663 INFO L276 IsEmpty]: Start isEmpty. Operand 81227 states and 525632 transitions. [2021-03-10 21:45:20,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 21:45:20,911 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:20,911 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:21,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:21,112 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:45:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:21,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1350631393, now seen corresponding path program 53 times [2021-03-10 21:45:21,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:21,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125001220] [2021-03-10 21:45:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:21,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125001220] [2021-03-10 21:45:21,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843304241] [2021-03-10 21:45:21,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:21,182 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:45:21,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:21,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:21,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:21,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:21,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-03-10 21:45:21,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717285576] [2021-03-10 21:45:21,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 21:45:21,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:21,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 21:45:21,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:21,941 INFO L87 Difference]: Start difference. First operand 81227 states and 525632 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 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) [2021-03-10 21:45:23,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:23,705 INFO L93 Difference]: Finished difference Result 112190 states and 716949 transitions. [2021-03-10 21:45:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:45:23,706 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 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 38 [2021-03-10 21:45:23,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:24,737 INFO L225 Difference]: With dead ends: 112190 [2021-03-10 21:45:24,738 INFO L226 Difference]: Without dead ends: 109091 [2021-03-10 21:45:24,738 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 693.8ms TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:45:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109091 states. [2021-03-10 21:45:27,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109091 to 81227. [2021-03-10 21:45:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81227 states, 81226 states have (on average 6.471228424396129) internal successors, (525632), 81226 states have internal predecessors, (525632), 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) [2021-03-10 21:45:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81227 states to 81227 states and 525632 transitions. [2021-03-10 21:45:28,362 INFO L78 Accepts]: Start accepts. Automaton has 81227 states and 525632 transitions. Word has length 38 [2021-03-10 21:45:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:28,362 INFO L480 AbstractCegarLoop]: Abstraction has 81227 states and 525632 transitions. [2021-03-10 21:45:28,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 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) [2021-03-10 21:45:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 81227 states and 525632 transitions. [2021-03-10 21:45:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 21:45:28,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:28,598 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:28,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-03-10 21:45:28,799 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:45:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:28,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1112457229, now seen corresponding path program 54 times [2021-03-10 21:45:28,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:28,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609645758] [2021-03-10 21:45:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:28,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609645758] [2021-03-10 21:45:28,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618232591] [2021-03-10 21:45:28,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:28,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-03-10 21:45:28,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:28,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:28,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:28,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:28,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-03-10 21:45:28,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402344759] [2021-03-10 21:45:28,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 21:45:28,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:28,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 21:45:28,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:28,992 INFO L87 Difference]: Start difference. First operand 81227 states and 525632 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 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) [2021-03-10 21:45:30,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:30,646 INFO L93 Difference]: Finished difference Result 119937 states and 766726 transitions. [2021-03-10 21:45:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:45:30,646 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 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 38 [2021-03-10 21:45:30,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:31,244 INFO L225 Difference]: With dead ends: 119937 [2021-03-10 21:45:31,245 INFO L226 Difference]: Without dead ends: 116839 [2021-03-10 21:45:31,245 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:45:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116839 states. [2021-03-10 21:45:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116839 to 81227. [2021-03-10 21:45:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81227 states, 81226 states have (on average 6.471228424396129) internal successors, (525632), 81226 states have internal predecessors, (525632), 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) [2021-03-10 21:45:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81227 states to 81227 states and 525632 transitions. [2021-03-10 21:45:35,381 INFO L78 Accepts]: Start accepts. Automaton has 81227 states and 525632 transitions. Word has length 38 [2021-03-10 21:45:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:35,381 INFO L480 AbstractCegarLoop]: Abstraction has 81227 states and 525632 transitions. [2021-03-10 21:45:35,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 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) [2021-03-10 21:45:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 81227 states and 525632 transitions. [2021-03-10 21:45:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 21:45:35,818 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:35,819 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:36,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:36,020 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:45:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:36,020 INFO L82 PathProgramCache]: Analyzing trace with hash -881687477, now seen corresponding path program 55 times [2021-03-10 21:45:36,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:36,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359720096] [2021-03-10 21:45:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:36,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359720096] [2021-03-10 21:45:36,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916718886] [2021-03-10 21:45:36,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:36,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:36,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:36,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:36,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2021-03-10 21:45:36,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074317979] [2021-03-10 21:45:36,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:36,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:36,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:36,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:36,221 INFO L87 Difference]: Start difference. First operand 81227 states and 525632 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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) [2021-03-10 21:45:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:38,046 INFO L93 Difference]: Finished difference Result 113755 states and 717330 transitions. [2021-03-10 21:45:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 21:45:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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 38 [2021-03-10 21:45:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:38,597 INFO L225 Difference]: With dead ends: 113755 [2021-03-10 21:45:38,597 INFO L226 Difference]: Without dead ends: 102909 [2021-03-10 21:45:38,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:45:38,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102909 states. [2021-03-10 21:45:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102909 to 81227. [2021-03-10 21:45:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81227 states, 81226 states have (on average 6.452170487282397) internal successors, (524084), 81226 states have internal predecessors, (524084), 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) [2021-03-10 21:45:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81227 states to 81227 states and 524084 transitions. [2021-03-10 21:45:41,890 INFO L78 Accepts]: Start accepts. Automaton has 81227 states and 524084 transitions. Word has length 38 [2021-03-10 21:45:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:41,890 INFO L480 AbstractCegarLoop]: Abstraction has 81227 states and 524084 transitions. [2021-03-10 21:45:41,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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) [2021-03-10 21:45:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 81227 states and 524084 transitions. [2021-03-10 21:45:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 21:45:42,141 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:42,142 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:42,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-03-10 21:45:42,342 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:45:42,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:42,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2142540207, now seen corresponding path program 56 times [2021-03-10 21:45:42,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:42,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49620117] [2021-03-10 21:45:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:42,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49620117] [2021-03-10 21:45:42,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248329917] [2021-03-10 21:45:42,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:42,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:42,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:42,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:42,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:42,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:42,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2021-03-10 21:45:42,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400784421] [2021-03-10 21:45:42,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:42,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:42,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:42,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:42,527 INFO L87 Difference]: Start difference. First operand 81227 states and 524084 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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) [2021-03-10 21:45:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:43,945 INFO L93 Difference]: Finished difference Result 107558 states and 678750 transitions. [2021-03-10 21:45:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:45:43,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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 38 [2021-03-10 21:45:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:44,445 INFO L225 Difference]: With dead ends: 107558 [2021-03-10 21:45:44,445 INFO L226 Difference]: Without dead ends: 99816 [2021-03-10 21:45:44,445 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 53.7ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99816 states. [2021-03-10 21:45:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99816 to 79679. [2021-03-10 21:45:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79679 states, 79678 states have (on average 6.398215316649514) internal successors, (509797), 79678 states have internal predecessors, (509797), 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) [2021-03-10 21:45:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79679 states to 79679 states and 509797 transitions. [2021-03-10 21:45:47,641 INFO L78 Accepts]: Start accepts. Automaton has 79679 states and 509797 transitions. Word has length 38 [2021-03-10 21:45:47,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:47,641 INFO L480 AbstractCegarLoop]: Abstraction has 79679 states and 509797 transitions. [2021-03-10 21:45:47,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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) [2021-03-10 21:45:47,641 INFO L276 IsEmpty]: Start isEmpty. Operand 79679 states and 509797 transitions. [2021-03-10 21:45:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 21:45:48,577 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:48,577 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:48,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:48,799 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:45:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1121471853, now seen corresponding path program 57 times [2021-03-10 21:45:48,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:48,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436092174] [2021-03-10 21:45:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-03-10 21:45:48,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436092174] [2021-03-10 21:45:48,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395049452] [2021-03-10 21:45:48,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:48,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:45:48,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:48,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:48,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:48,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:48,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-03-10 21:45:48,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53983486] [2021-03-10 21:45:48,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:48,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:48,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:48,984 INFO L87 Difference]: Start difference. First operand 79679 states and 509797 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2021-03-10 21:45:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:51,086 INFO L93 Difference]: Finished difference Result 140075 states and 878174 transitions. [2021-03-10 21:45:51,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 21:45:51,086 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 38 [2021-03-10 21:45:51,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:51,705 INFO L225 Difference]: With dead ends: 140075 [2021-03-10 21:45:51,705 INFO L226 Difference]: Without dead ends: 105995 [2021-03-10 21:45:51,706 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 146.1ms TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:45:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105995 states. [2021-03-10 21:45:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105995 to 70391. [2021-03-10 21:45:54,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70391 states, 70390 states have (on average 6.35452479045319) internal successors, (447295), 70390 states have internal predecessors, (447295), 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) [2021-03-10 21:45:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70391 states to 70391 states and 447295 transitions. [2021-03-10 21:45:55,112 INFO L78 Accepts]: Start accepts. Automaton has 70391 states and 447295 transitions. Word has length 38 [2021-03-10 21:45:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:55,112 INFO L480 AbstractCegarLoop]: Abstraction has 70391 states and 447295 transitions. [2021-03-10 21:45:55,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2021-03-10 21:45:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 70391 states and 447295 transitions. [2021-03-10 21:45:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 21:45:55,334 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:55,334 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:55,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-03-10 21:45:55,535 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:45:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:55,535 INFO L82 PathProgramCache]: Analyzing trace with hash 554192305, now seen corresponding path program 58 times [2021-03-10 21:45:55,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:55,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588622657] [2021-03-10 21:45:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:55,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588622657] [2021-03-10 21:45:55,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140771151] [2021-03-10 21:45:55,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:55,657 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:55,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:55,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:55,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:45:55,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:55,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:45:55,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108366031] [2021-03-10 21:45:55,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:55,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:55,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:55,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:55,789 INFO L87 Difference]: Start difference. First operand 70391 states and 447295 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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) [2021-03-10 21:45:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:57,155 INFO L93 Difference]: Finished difference Result 82778 states and 524444 transitions. [2021-03-10 21:45:57,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:45:57,156 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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 38 [2021-03-10 21:45:57,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:57,552 INFO L225 Difference]: With dead ends: 82778 [2021-03-10 21:45:57,552 INFO L226 Difference]: Without dead ends: 79679 [2021-03-10 21:45:57,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:45:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79679 states. [2021-03-10 21:45:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79679 to 73487. [2021-03-10 21:45:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73487 states, 73486 states have (on average 6.349250197316496) internal successors, (466581), 73486 states have internal predecessors, (466581), 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) [2021-03-10 21:46:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73487 states to 73487 states and 466581 transitions. [2021-03-10 21:46:00,611 INFO L78 Accepts]: Start accepts. Automaton has 73487 states and 466581 transitions. Word has length 38 [2021-03-10 21:46:00,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:00,611 INFO L480 AbstractCegarLoop]: Abstraction has 73487 states and 466581 transitions. [2021-03-10 21:46:00,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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) [2021-03-10 21:46:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 73487 states and 466581 transitions. [2021-03-10 21:46:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 21:46:00,854 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:00,854 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:46:01,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:01,055 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:46:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:01,055 INFO L82 PathProgramCache]: Analyzing trace with hash -41639662, now seen corresponding path program 59 times [2021-03-10 21:46:01,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:01,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706515228] [2021-03-10 21:46:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:46:01,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706515228] [2021-03-10 21:46:01,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708192867] [2021-03-10 21:46:01,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:01,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:46:01,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:01,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 21:46:01,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:46:01,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:01,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 10 [2021-03-10 21:46:01,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272734728] [2021-03-10 21:46:01,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:46:01,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:01,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:46:01,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:46:01,421 INFO L87 Difference]: Start difference. First operand 73487 states and 466581 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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) [2021-03-10 21:46:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:03,284 INFO L93 Difference]: Finished difference Result 155912 states and 983338 transitions. [2021-03-10 21:46:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:46:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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 39 [2021-03-10 21:46:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:04,627 INFO L225 Difference]: With dead ends: 155912 [2021-03-10 21:46:04,628 INFO L226 Difference]: Without dead ends: 151952 [2021-03-10 21:46:04,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.8ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:46:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151952 states. [2021-03-10 21:46:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151952 to 119841. [2021-03-10 21:46:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119841 states, 119840 states have (on average 6.5424148865153535) internal successors, (784043), 119840 states have internal predecessors, (784043), 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) [2021-03-10 21:46:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119841 states to 119841 states and 784043 transitions. [2021-03-10 21:46:10,233 INFO L78 Accepts]: Start accepts. Automaton has 119841 states and 784043 transitions. Word has length 39 [2021-03-10 21:46:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:10,234 INFO L480 AbstractCegarLoop]: Abstraction has 119841 states and 784043 transitions. [2021-03-10 21:46:10,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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) [2021-03-10 21:46:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 119841 states and 784043 transitions. [2021-03-10 21:46:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 21:46:10,773 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:10,773 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:46:10,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-03-10 21:46:10,975 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:46:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:10,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2062562636, now seen corresponding path program 60 times [2021-03-10 21:46:10,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:10,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802430503] [2021-03-10 21:46:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-03-10 21:46:11,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802430503] [2021-03-10 21:46:11,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713232034] [2021-03-10 21:46:11,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:11,082 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-03-10 21:46:11,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:11,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 21:46:11,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:46:11,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:11,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-03-10 21:46:11,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108847371] [2021-03-10 21:46:11,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:46:11,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:11,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:46:11,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:46:11,263 INFO L87 Difference]: Start difference. First operand 119841 states and 784043 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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) [2021-03-10 21:46:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:18,475 INFO L93 Difference]: Finished difference Result 363219 states and 2317845 transitions. [2021-03-10 21:46:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 21:46:18,476 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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 39 [2021-03-10 21:46:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:20,696 INFO L225 Difference]: With dead ends: 363219 [2021-03-10 21:46:20,696 INFO L226 Difference]: Without dead ends: 351491 [2021-03-10 21:46:20,696 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 574.9ms TimeCoverageRelationStatistics Valid=198, Invalid=2154, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 21:46:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351491 states. [2021-03-10 21:46:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351491 to 205350. [2021-03-10 21:46:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205350 states, 205349 states have (on average 6.88260960608525) internal successors, (1413337), 205349 states have internal predecessors, (1413337), 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) [2021-03-10 21:46:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205350 states to 205350 states and 1413337 transitions. [2021-03-10 21:46:34,844 INFO L78 Accepts]: Start accepts. Automaton has 205350 states and 1413337 transitions. Word has length 39 [2021-03-10 21:46:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:34,844 INFO L480 AbstractCegarLoop]: Abstraction has 205350 states and 1413337 transitions. [2021-03-10 21:46:34,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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) [2021-03-10 21:46:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 205350 states and 1413337 transitions. [2021-03-10 21:46:36,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 21:46:36,694 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:36,694 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:46:36,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:36,907 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:46:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:36,907 INFO L82 PathProgramCache]: Analyzing trace with hash -828443812, now seen corresponding path program 61 times [2021-03-10 21:46:36,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:36,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245612071] [2021-03-10 21:46:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-03-10 21:46:36,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245612071] [2021-03-10 21:46:36,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506193426] [2021-03-10 21:46:36,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:37,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 21:46:37,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-03-10 21:46:37,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:37,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-10 21:46:37,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879716456] [2021-03-10 21:46:37,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 21:46:37,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:37,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 21:46:37,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:46:37,202 INFO L87 Difference]: Start difference. First operand 205350 states and 1413337 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 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) [2021-03-10 21:46:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:45,471 INFO L93 Difference]: Finished difference Result 505241 states and 3345930 transitions. [2021-03-10 21:46:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 21:46:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 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 39 [2021-03-10 21:46:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:49,750 INFO L225 Difference]: With dead ends: 505241 [2021-03-10 21:46:49,750 INFO L226 Difference]: Without dead ends: 471693 [2021-03-10 21:46:49,750 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 488.3ms TimeCoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 21:46:50,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471693 states. [2021-03-10 21:47:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471693 to 273193. [2021-03-10 21:47:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273193 states, 273192 states have (on average 7.154719025447305) internal successors, (1954612), 273192 states have internal predecessors, (1954612), 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) [2021-03-10 21:47:08,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273193 states to 273193 states and 1954612 transitions. [2021-03-10 21:47:08,369 INFO L78 Accepts]: Start accepts. Automaton has 273193 states and 1954612 transitions. Word has length 39 [2021-03-10 21:47:08,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:08,369 INFO L480 AbstractCegarLoop]: Abstraction has 273193 states and 1954612 transitions. [2021-03-10 21:47:08,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 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) [2021-03-10 21:47:08,369 INFO L276 IsEmpty]: Start isEmpty. Operand 273193 states and 1954612 transitions. [2021-03-10 21:47:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 21:47:11,331 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:11,331 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:47:11,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-03-10 21:47:11,547 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:47:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:11,548 INFO L82 PathProgramCache]: Analyzing trace with hash -410626040, now seen corresponding path program 62 times [2021-03-10 21:47:11,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:11,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149242146] [2021-03-10 21:47:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-03-10 21:47:11,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149242146] [2021-03-10 21:47:11,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871914223] [2021-03-10 21:47:11,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:11,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:47:11,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:11,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 21:47:11,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:47:12,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:12,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-03-10 21:47:12,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231392013] [2021-03-10 21:47:12,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:47:12,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:12,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:47:12,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:47:12,090 INFO L87 Difference]: Start difference. First operand 273193 states and 1954612 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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) [2021-03-10 21:47:24,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:24,179 INFO L93 Difference]: Finished difference Result 514006 states and 3547889 transitions. [2021-03-10 21:47:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 21:47:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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 39 [2021-03-10 21:47:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:28,647 INFO L225 Difference]: With dead ends: 514006 [2021-03-10 21:47:28,647 INFO L226 Difference]: Without dead ends: 493775 [2021-03-10 21:47:28,647 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 935.2ms TimeCoverageRelationStatistics Valid=209, Invalid=2143, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 21:47:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493775 states. [2021-03-10 21:47:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493775 to 333832. [2021-03-10 21:47:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333832 states, 333831 states have (on average 7.313104534929351) internal successors, (2441341), 333831 states have internal predecessors, (2441341), 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) [2021-03-10 21:47:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333832 states to 333832 states and 2441341 transitions. [2021-03-10 21:47:53,729 INFO L78 Accepts]: Start accepts. Automaton has 333832 states and 2441341 transitions. Word has length 39 [2021-03-10 21:47:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:53,729 INFO L480 AbstractCegarLoop]: Abstraction has 333832 states and 2441341 transitions. [2021-03-10 21:47:53,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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) [2021-03-10 21:47:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 333832 states and 2441341 transitions. [2021-03-10 21:47:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 21:47:57,356 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:57,356 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:47:57,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-03-10 21:47:57,575 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:47:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:57,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1520847550, now seen corresponding path program 63 times [2021-03-10 21:47:57,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:57,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868793968] [2021-03-10 21:47:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-03-10 21:47:57,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868793968] [2021-03-10 21:47:57,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673362637] [2021-03-10 21:47:57,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:57,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:47:57,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:57,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 21:47:57,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-10 21:47:58,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:58,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-03-10 21:47:58,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127587872] [2021-03-10 21:47:58,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:47:58,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:47:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:47:58,086 INFO L87 Difference]: Start difference. First operand 333832 states and 2441341 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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) [2021-03-10 21:48:01,022 WARN L205 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-03-10 21:48:15,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:48:15,568 INFO L93 Difference]: Finished difference Result 673375 states and 4722113 transitions. [2021-03-10 21:48:15,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 21:48:15,569 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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 39 [2021-03-10 21:48:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:48:21,788 INFO L225 Difference]: With dead ends: 673375 [2021-03-10 21:48:21,789 INFO L226 Difference]: Without dead ends: 650182 [2021-03-10 21:48:21,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 1753.0ms TimeCoverageRelationStatistics Valid=209, Invalid=2143, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 21:48:24,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650182 states. [2021-03-10 21:48:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650182 to 443520. [2021-03-10 21:48:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443520 states, 443519 states have (on average 7.412081556821692) internal successors, (3287399), 443519 states have internal predecessors, (3287399), 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) [2021-03-10 21:49:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443520 states to 443520 states and 3287399 transitions. [2021-03-10 21:49:03,308 INFO L78 Accepts]: Start accepts. Automaton has 443520 states and 3287399 transitions. Word has length 39 [2021-03-10 21:49:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:49:03,317 INFO L480 AbstractCegarLoop]: Abstraction has 443520 states and 3287399 transitions. [2021-03-10 21:49:03,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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) [2021-03-10 21:49:03,318 INFO L276 IsEmpty]: Start isEmpty. Operand 443520 states and 3287399 transitions. [2021-03-10 21:49:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 21:49:09,325 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:49:09,325 INFO L519 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:49:09,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-03-10 21:49:09,549 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 21:49:09,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:49:09,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1403202507, now seen corresponding path program 64 times [2021-03-10 21:49:09,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:49:09,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153533821] [2021-03-10 21:49:09,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:49:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:49:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:49:09,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153533821] [2021-03-10 21:49:09,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620637160] [2021-03-10 21:49:09,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:09,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:49:09,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:49:09,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 21:49:09,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:49:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 21:49:09,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:49:09,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 13 [2021-03-10 21:49:09,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739808956] [2021-03-10 21:49:09,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:49:09,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:49:09,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:49:09,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:49:09,915 INFO L87 Difference]: Start difference. First operand 443520 states and 3287399 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2021-03-10 21:49:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:49:24,545 INFO L93 Difference]: Finished difference Result 620784 states and 4448544 transitions. [2021-03-10 21:49:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:49:24,546 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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 40 [2021-03-10 21:49:24,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:49:34,402 INFO L225 Difference]: With dead ends: 620784 [2021-03-10 21:49:34,402 INFO L226 Difference]: Without dead ends: 578825 [2021-03-10 21:49:34,402 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 175.3ms TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:49:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578825 states. [2021-03-10 21:49:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578825 to 471074. [2021-03-10 21:49:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471074 states, 471073 states have (on average 7.345876329146438) internal successors, (3460444), 471073 states have internal predecessors, (3460444), 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) Received shutdown request... [2021-03-10 21:50:04,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:04,419 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 21:50:04,424 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 21:50:04,425 INFO L202 PluginConnector]: Adding new model exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 09:50:04 BasicIcfg [2021-03-10 21:50:04,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 21:50:04,425 INFO L168 Benchmark]: Toolchain (without parser) took 560206.18 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 236.7 MB in the beginning and 7.7 GB in the end (delta: -7.5 GB). Peak memory consumption was 8.4 GB. Max. memory is 16.0 GB. [2021-03-10 21:50:04,426 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 21:50:04,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.46 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 21:50:04,426 INFO L168 Benchmark]: Boogie Preprocessor took 23.65 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-10 21:50:04,426 INFO L168 Benchmark]: RCFGBuilder took 377.35 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 233.5 MB in the end (delta: 110.3 kB). Peak memory consumption was 16.2 MB. Max. memory is 16.0 GB. [2021-03-10 21:50:04,426 INFO L168 Benchmark]: TraceAbstraction took 559769.86 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 233.4 MB in the beginning and 7.7 GB in the end (delta: -7.5 GB). Peak memory consumption was 8.4 GB. Max. memory is 16.0 GB. [2021-03-10 21:50:04,426 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 0.18 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.46 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.65 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 377.35 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 233.5 MB in the end (delta: 110.3 kB). Peak memory consumption was 16.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 559769.86 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 233.4 MB in the beginning and 7.7 GB in the end (delta: -7.5 GB). Peak memory consumption was 8.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 100). Cancelled while ReachableStatesComputation was computing reachable states (276651 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 559575.8ms, OverallIterations: 70, TraceHistogramMax: 5, EmptinessCheckTime: 30187.6ms, AutomataDifference: 214893.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 49.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9848 SDtfs, 13188 SDslu, 63485 SDs, 0 SdLazy, 28639 SolverSat, 1335 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13684.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3374 GetRequests, 1969 SyntacticMatches, 112 SemanticMatches, 1293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14592 ImplicationChecksByTransitivity, 15454.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=443520occurred in iteration=69, InterpolantAutomatonStates: 1285, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 282695.2ms AutomataMinimizationTime, 70 MinimizatonAttempts, 2274741 StatesRemovedByMinimization, 65 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 558.7ms SsaConstructionTime, 2348.3ms SatisfiabilityAnalysisTime, 12775.2ms InterpolantComputationTime, 4578 NumberOfCodeBlocks, 4555 NumberOfCodeBlocksAsserted, 216 NumberOfCheckSat, 4441 ConstructedInterpolants, 0 QuantifiedInterpolants, 35190 SizeOfPredicates, 128 NumberOfNonLiveVariables, 9714 ConjunctsInSsa, 525 ConjunctsInUnsatCore, 137 InterpolantComputations, 3 PerfectInterpolantSequences, 1844/3031 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown !SESSION 2021-03-10 21:40:42.305 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.9.1 java.vendor=Debian BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl Command-line arguments: -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl !ENTRY org.eclipse.osgi 4 0 2021-03-10 21:50:04.702 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cde57475/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cde57475/.metadata/.log.