/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_14-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:49:25,452 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 21:49:25,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:49:25,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:49:25,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:49:25,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:49:25,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:49:25,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:49:25,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:49:25,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:49:25,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:49:25,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:49:25,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:49:25,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:49:25,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:49:25,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:49:25,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:49:25,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:49:25,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:49:25,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:49:25,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:49:25,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:49:25,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:49:25,528 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:49:25,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:49:25,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:49:25,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:49:25,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:49:25,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:49:25,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:49:25,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:49:25,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:49:25,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:49:25,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:49:25,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:49:25,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:49:25,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:49:25,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:49:25,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:49:25,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:49:25,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:49:25,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:49:25,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:49:25,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:49:25,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:49:25,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:25,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:49:25,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:49:25,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:49:25,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:49:25,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:49:25,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:49:25,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:49:25,866 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:49:25,867 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-2.c [2020-07-20 21:49:25,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1978dbe/28c1f39dc3434d2aa7926c50bc62f562/FLAG3e7ecea5d [2020-07-20 21:49:26,524 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:49:26,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_14-2.c [2020-07-20 21:49:26,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1978dbe/28c1f39dc3434d2aa7926c50bc62f562/FLAG3e7ecea5d [2020-07-20 21:49:26,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1978dbe/28c1f39dc3434d2aa7926c50bc62f562 [2020-07-20 21:49:26,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:49:26,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:49:26,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:49:26,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:49:26,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:49:26,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:49:26" (1/1) ... [2020-07-20 21:49:26,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28715b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:26, skipping insertion in model container [2020-07-20 21:49:26,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:49:26" (1/1) ... [2020-07-20 21:49:26,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:49:26,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:49:27,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:49:27,119 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:49:27,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:49:27,166 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:49:27,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27 WrapperNode [2020-07-20 21:49:27,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:49:27,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:49:27,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:49:27,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:49:27,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27" (1/1) ... [2020-07-20 21:49:27,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27" (1/1) ... [2020-07-20 21:49:27,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27" (1/1) ... [2020-07-20 21:49:27,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27" (1/1) ... [2020-07-20 21:49:27,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27" (1/1) ... [2020-07-20 21:49:27,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27" (1/1) ... [2020-07-20 21:49:27,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27" (1/1) ... [2020-07-20 21:49:27,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:49:27,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:49:27,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:49:27,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:49:27,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:49:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:49:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:49:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:49:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:49:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:49:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:49:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:49:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:49:27,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:49:27,862 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 21:49:27,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:49:27 BoogieIcfgContainer [2020-07-20 21:49:27,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:49:27,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:49:27,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:49:27,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:49:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:49:26" (1/3) ... [2020-07-20 21:49:27,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322e31e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:49:27, skipping insertion in model container [2020-07-20 21:49:27,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:27" (2/3) ... [2020-07-20 21:49:27,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322e31e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:49:27, skipping insertion in model container [2020-07-20 21:49:27,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:49:27" (3/3) ... [2020-07-20 21:49:27,880 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-07-20 21:49:27,891 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:49:27,901 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:49:27,917 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:49:27,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:49:27,953 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:49:27,953 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:49:27,953 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:49:27,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:49:27,954 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:49:27,954 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:49:27,954 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:49:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-07-20 21:49:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 21:49:27,985 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:49:27,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:49:27,987 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:49:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:49:27,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1694527455, now seen corresponding path program 1 times [2020-07-20 21:49:28,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:49:28,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601969313] [2020-07-20 21:49:28,006 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:28,122 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:49:28,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:49:28,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 21:49:28,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:49:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:49:28,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:49:28,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601969313] [2020-07-20 21:49:28,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:49:28,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:49:28,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963682592] [2020-07-20 21:49:28,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:49:28,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:49:28,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:49:28,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:49:28,210 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-07-20 21:49:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:49:28,308 INFO L93 Difference]: Finished difference Result 155 states and 287 transitions. [2020-07-20 21:49:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:49:28,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 21:49:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:49:28,329 INFO L225 Difference]: With dead ends: 155 [2020-07-20 21:49:28,329 INFO L226 Difference]: Without dead ends: 96 [2020-07-20 21:49:28,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:49:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-20 21:49:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-07-20 21:49:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-20 21:49:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 174 transitions. [2020-07-20 21:49:28,393 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 174 transitions. Word has length 24 [2020-07-20 21:49:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:49:28,394 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 174 transitions. [2020-07-20 21:49:28,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:49:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 174 transitions. [2020-07-20 21:49:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 21:49:28,396 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:49:28,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:49:28,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:28,611 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:49:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:49:28,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1694520263, now seen corresponding path program 1 times [2020-07-20 21:49:28,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:49:28,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412565488] [2020-07-20 21:49:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:28,685 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:49:28,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:49:28,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 21:49:28,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:49:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:49:28,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:49:28,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412565488] [2020-07-20 21:49:28,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:49:28,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:49:28,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662623457] [2020-07-20 21:49:28,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:49:28,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:49:28,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:49:28,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:49:28,719 INFO L87 Difference]: Start difference. First operand 94 states and 174 transitions. Second operand 3 states. [2020-07-20 21:49:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:49:28,759 INFO L93 Difference]: Finished difference Result 97 states and 177 transitions. [2020-07-20 21:49:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:49:28,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 21:49:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:49:28,762 INFO L225 Difference]: With dead ends: 97 [2020-07-20 21:49:28,762 INFO L226 Difference]: Without dead ends: 95 [2020-07-20 21:49:28,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:49:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-20 21:49:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-07-20 21:49:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-20 21:49:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 175 transitions. [2020-07-20 21:49:28,776 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 175 transitions. Word has length 24 [2020-07-20 21:49:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:49:28,777 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 175 transitions. [2020-07-20 21:49:28,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:49:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 175 transitions. [2020-07-20 21:49:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 21:49:28,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:49:28,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:49:28,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:28,982 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:49:28,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:49:28,983 INFO L82 PathProgramCache]: Analyzing trace with hash 106179553, now seen corresponding path program 1 times [2020-07-20 21:49:28,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:49:28,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753952425] [2020-07-20 21:49:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:29,054 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:49:29,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:49:29,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 21:49:29,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:49:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:49:29,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:49:29,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753952425] [2020-07-20 21:49:29,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:49:29,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:49:29,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672809057] [2020-07-20 21:49:29,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:49:29,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:49:29,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:49:29,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:49:29,080 INFO L87 Difference]: Start difference. First operand 95 states and 175 transitions. Second operand 3 states. [2020-07-20 21:49:29,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:49:29,138 INFO L93 Difference]: Finished difference Result 222 states and 412 transitions. [2020-07-20 21:49:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:49:29,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 21:49:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:49:29,147 INFO L225 Difference]: With dead ends: 222 [2020-07-20 21:49:29,147 INFO L226 Difference]: Without dead ends: 132 [2020-07-20 21:49:29,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:49:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-07-20 21:49:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-07-20 21:49:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-07-20 21:49:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 237 transitions. [2020-07-20 21:49:29,182 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 237 transitions. Word has length 24 [2020-07-20 21:49:29,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:49:29,184 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 237 transitions. [2020-07-20 21:49:29,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:49:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 237 transitions. [2020-07-20 21:49:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 21:49:29,187 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:49:29,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:49:29,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:29,403 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:49:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:49:29,404 INFO L82 PathProgramCache]: Analyzing trace with hash 106172361, now seen corresponding path program 1 times [2020-07-20 21:49:29,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:49:29,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875282129] [2020-07-20 21:49:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:29,486 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:49:29,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:49:29,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 21:49:29,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:49:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:49:29,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:49:29,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875282129] [2020-07-20 21:49:29,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:49:29,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:49:29,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617971362] [2020-07-20 21:49:29,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:49:29,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:49:29,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:49:29,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:49:29,514 INFO L87 Difference]: Start difference. First operand 130 states and 237 transitions. Second operand 3 states. [2020-07-20 21:49:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:49:29,550 INFO L93 Difference]: Finished difference Result 179 states and 322 transitions. [2020-07-20 21:49:29,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:49:29,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 21:49:29,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:49:29,552 INFO L225 Difference]: With dead ends: 179 [2020-07-20 21:49:29,553 INFO L226 Difference]: Without dead ends: 130 [2020-07-20 21:49:29,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:49:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-20 21:49:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-07-20 21:49:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-20 21:49:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 230 transitions. [2020-07-20 21:49:29,566 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 230 transitions. Word has length 24 [2020-07-20 21:49:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:49:29,567 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 230 transitions. [2020-07-20 21:49:29,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:49:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 230 transitions. [2020-07-20 21:49:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 21:49:29,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:49:29,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:49:29,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:29,784 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:49:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:49:29,785 INFO L82 PathProgramCache]: Analyzing trace with hash -914888801, now seen corresponding path program 1 times [2020-07-20 21:49:29,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:49:29,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500556241] [2020-07-20 21:49:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:29,838 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:49:29,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 21:49:29,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:49:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 21:49:29,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:49:29,890 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 21:49:29,891 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 21:49:30,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:30,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:49:30 BoogieIcfgContainer [2020-07-20 21:49:30,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:49:30,194 INFO L168 Benchmark]: Toolchain (without parser) took 3362.32 ms. Allocated memory was 134.7 MB in the beginning and 225.4 MB in the end (delta: 90.7 MB). Free memory was 98.6 MB in the beginning and 170.5 MB in the end (delta: -71.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-07-20 21:49:30,197 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 134.7 MB. Free memory was 116.6 MB in the beginning and 116.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 21:49:30,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.42 ms. Allocated memory is still 134.7 MB. Free memory was 98.2 MB in the beginning and 86.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:49:30,200 INFO L168 Benchmark]: Boogie Preprocessor took 147.76 ms. Allocated memory was 134.7 MB in the beginning and 199.8 MB in the end (delta: 65.0 MB). Free memory was 86.5 MB in the beginning and 177.1 MB in the end (delta: -90.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:49:30,201 INFO L168 Benchmark]: RCFGBuilder took 551.86 ms. Allocated memory is still 199.8 MB. Free memory was 177.1 MB in the beginning and 154.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:49:30,203 INFO L168 Benchmark]: TraceAbstraction took 2320.47 ms. Allocated memory was 199.8 MB in the beginning and 225.4 MB in the end (delta: 25.7 MB). Free memory was 153.3 MB in the beginning and 170.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2020-07-20 21:49:30,207 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 134.7 MB. Free memory was 116.6 MB in the beginning and 116.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.42 ms. Allocated memory is still 134.7 MB. Free memory was 98.2 MB in the beginning and 86.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.76 ms. Allocated memory was 134.7 MB in the beginning and 199.8 MB in the end (delta: 65.0 MB). Free memory was 86.5 MB in the beginning and 177.1 MB in the end (delta: -90.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 551.86 ms. Allocated memory is still 199.8 MB. Free memory was 177.1 MB in the beginning and 154.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2320.47 ms. Allocated memory was 199.8 MB in the beginning and 225.4 MB in the end (delta: 25.7 MB). Free memory was 153.3 MB in the beginning and 170.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 217]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] int p1 = __VERIFIER_nondet_int(); [L7] int lk1; [L9] int p2 = __VERIFIER_nondet_int(); [L10] int lk2; [L12] int p3 = __VERIFIER_nondet_int(); [L13] int lk3; [L15] int p4 = __VERIFIER_nondet_int(); [L16] int lk4; [L18] int p5 = __VERIFIER_nondet_int(); [L19] int lk5; [L21] int p6 = __VERIFIER_nondet_int(); [L22] int lk6; [L24] int p7 = __VERIFIER_nondet_int(); [L25] int lk7; [L27] int p8 = __VERIFIER_nondet_int(); [L28] int lk8; [L30] int p9 = __VERIFIER_nondet_int(); [L31] int lk9; [L33] int p10 = __VERIFIER_nondet_int(); [L34] int lk10; [L36] int p11 = __VERIFIER_nondet_int(); [L37] int lk11; [L39] int p12 = __VERIFIER_nondet_int(); [L40] int lk12; [L42] int p13 = __VERIFIER_nondet_int(); [L43] int lk13; [L45] int p14 = __VERIFIER_nondet_int(); [L46] int lk14; [L49] int cond; VAL [p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L51] COND TRUE 1 [L52] cond = __VERIFIER_nondet_int() [L53] COND FALSE !(cond == 0) [L56] lk1 = 0 [L58] lk2 = 0 [L60] lk3 = 0 [L62] lk4 = 0 [L64] lk5 = 0 [L66] lk6 = 0 [L68] lk7 = 0 [L70] lk8 = 0 [L72] lk9 = 0 [L74] lk10 = 0 [L76] lk11 = 0 [L78] lk12 = 0 [L80] lk13 = 0 [L82] lk14 = 0 VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L86] COND FALSE !(p1 != 0) VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L90] COND FALSE !(p2 != 0) VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L94] COND TRUE p3 != 0 [L95] lk3 = 1 VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=1, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L98] COND TRUE p4 != 0 [L99] lk4 = 1 VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=1, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L102] COND TRUE p5 != 0 [L103] lk5 = 1 VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L106] COND TRUE p6 != 0 [L107] lk6 = 1 VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L110] COND TRUE p7 != 0 [L111] lk7 = 1 VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L114] COND FALSE !(p8 != 0) VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L118] COND TRUE p9 != 0 [L119] lk9 = 1 VAL [cond=-1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=1, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L122] COND TRUE p10 != 0 [L123] lk10 = 1 VAL [cond=-1, lk1=0, lk10=1, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=1, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L126] COND TRUE p11 != 0 [L127] lk11 = 1 VAL [cond=-1, lk1=0, lk10=1, lk11=1, lk12=0, lk13=0, lk14=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=1, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L130] COND TRUE p12 != 0 [L131] lk12 = 1 VAL [cond=-1, lk1=0, lk10=1, lk11=1, lk12=1, lk13=0, lk14=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=1, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L134] COND TRUE p13 != 0 [L135] lk13 = 1 VAL [cond=-1, lk1=0, lk10=1, lk11=1, lk12=1, lk13=1, lk14=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=1, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L138] COND TRUE p14 != 0 [L139] lk14 = 1 VAL [cond=-1, lk1=0, lk10=1, lk11=1, lk12=1, lk13=1, lk14=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=1, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L144] COND FALSE !(p1 != 0) VAL [cond=-1, lk1=0, lk10=1, lk11=1, lk12=1, lk13=1, lk14=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=1, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L149] COND FALSE !(p2 != 0) VAL [cond=-1, lk1=0, lk10=1, lk11=1, lk12=1, lk13=1, lk14=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=1, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] [L217] __VERIFIER_error() VAL [cond=-1, lk1=0, lk10=1, lk11=1, lk12=1, lk13=1, lk14=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=1, p1=0, p10=-1, p11=1, p12=1, p13=-1, p14=1, p2=0, p3=-1, p4=-1, p5=1, p6=-1, p7=1, p8=0, p9=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 458 SDtfs, 227 SDslu, 301 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 120 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 5382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 541 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...