/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 NOT_INCREMENTALLY -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 [2020-07-21 11:13:28,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:13:28,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:13:28,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:13:28,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:13:28,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:13:28,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:13:28,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:13:28,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:13:28,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:13:28,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:13:28,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:13:28,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:13:28,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:13:28,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:13:28,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:13:28,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:13:28,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:13:28,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:13:28,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:13:28,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:13:28,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:13:28,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:13:28,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:13:28,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:13:28,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:13:28,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:13:28,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:13:28,341 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 [2020-07-21 11:13:28,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:13:28,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:13:28,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:13:28,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:13:28,359 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:13:28,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:13:28,360 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:13:28,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:13:28,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:13:28,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:13:28,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:13:28,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:13:28,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:13:28,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:13:28,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:13:28,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:13:28,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:13:28,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:13:28,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:13:28,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:13:28,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:13:28,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:13:28,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:13:28,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:13:28,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:13:28,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:13:28,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:28,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:13:28,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:13:28,364 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 -> NOT_INCREMENTALLY [2020-07-21 11:13:28,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:13:28,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:13:28,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:13:28,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:13:28,696 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:13:28,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-2.c [2020-07-21 11:13:28,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f215654/d5afc5ca44a84d4282769574103fabfe/FLAG82d940ac8 [2020-07-21 11:13:29,381 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:13:29,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_14-2.c [2020-07-21 11:13:29,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f215654/d5afc5ca44a84d4282769574103fabfe/FLAG82d940ac8 [2020-07-21 11:13:29,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f215654/d5afc5ca44a84d4282769574103fabfe [2020-07-21 11:13:29,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:13:29,752 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:13:29,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:13:29,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:13:29,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:13:29,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:13:29" (1/1) ... [2020-07-21 11:13:29,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280fe8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:29, skipping insertion in model container [2020-07-21 11:13:29,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:13:29" (1/1) ... [2020-07-21 11:13:29,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:13:29,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:13:30,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:13:30,034 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:13:30,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:13:30,086 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:13:30,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30 WrapperNode [2020-07-21 11:13:30,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:13:30,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:13:30,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:13:30,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:13:30,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30" (1/1) ... [2020-07-21 11:13:30,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30" (1/1) ... [2020-07-21 11:13:30,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30" (1/1) ... [2020-07-21 11:13:30,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30" (1/1) ... [2020-07-21 11:13:30,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30" (1/1) ... [2020-07-21 11:13:30,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30" (1/1) ... [2020-07-21 11:13:30,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30" (1/1) ... [2020-07-21 11:13:30,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:13:30,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:13:30,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:13:30,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:13:30,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30" (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 [2020-07-21 11:13:30,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:13:30,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:13:30,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:13:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:13:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:13:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:13:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:13:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:13:30,710 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:13:30,710 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:13:30,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:13:30 BoogieIcfgContainer [2020-07-21 11:13:30,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:13:30,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:13:30,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:13:30,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:13:30,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:13:29" (1/3) ... [2020-07-21 11:13:30,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b089de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:13:30, skipping insertion in model container [2020-07-21 11:13:30,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:30" (2/3) ... [2020-07-21 11:13:30,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b089de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:13:30, skipping insertion in model container [2020-07-21 11:13:30,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:13:30" (3/3) ... [2020-07-21 11:13:30,726 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-07-21 11:13:30,740 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:13:30,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:13:30,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:13:30,793 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:13:30,794 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:13:30,794 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:13:30,794 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:13:30,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:13:30,795 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:13:30,795 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:13:30,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:13:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-07-21 11:13:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 11:13:30,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:30,826 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] [2020-07-21 11:13:30,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1694527455, now seen corresponding path program 1 times [2020-07-21 11:13:30,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:30,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877166996] [2020-07-21 11:13:30,844 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 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 [2020-07-21 11:13:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:30,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 11:13:30,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:13:31,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:31,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877166996] [2020-07-21 11:13:31,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:31,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:31,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790103962] [2020-07-21 11:13:31,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:31,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:31,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:31,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:31,095 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-07-21 11:13:31,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:31,175 INFO L93 Difference]: Finished difference Result 155 states and 287 transitions. [2020-07-21 11:13:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:31,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-21 11:13:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:31,203 INFO L225 Difference]: With dead ends: 155 [2020-07-21 11:13:31,204 INFO L226 Difference]: Without dead ends: 96 [2020-07-21 11:13:31,213 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 [2020-07-21 11:13:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-21 11:13:31,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-07-21 11:13:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-21 11:13:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 174 transitions. [2020-07-21 11:13:31,273 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 174 transitions. Word has length 24 [2020-07-21 11:13:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:31,274 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 174 transitions. [2020-07-21 11:13:31,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 174 transitions. [2020-07-21 11:13:31,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 11:13:31,276 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:31,277 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] [2020-07-21 11:13:31,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:31,492 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1694520263, now seen corresponding path program 1 times [2020-07-21 11:13:31,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:31,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479757831] [2020-07-21 11:13:31,494 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 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 [2020-07-21 11:13:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:31,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 11:13:31,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:13:31,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:31,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479757831] [2020-07-21 11:13:31,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:31,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:31,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103536820] [2020-07-21 11:13:31,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:31,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:31,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:31,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:31,650 INFO L87 Difference]: Start difference. First operand 94 states and 174 transitions. Second operand 3 states. [2020-07-21 11:13:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:31,684 INFO L93 Difference]: Finished difference Result 97 states and 177 transitions. [2020-07-21 11:13:31,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:31,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-21 11:13:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:31,687 INFO L225 Difference]: With dead ends: 97 [2020-07-21 11:13:31,688 INFO L226 Difference]: Without dead ends: 95 [2020-07-21 11:13:31,689 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 [2020-07-21 11:13:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-21 11:13:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-07-21 11:13:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-21 11:13:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 175 transitions. [2020-07-21 11:13:31,702 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 175 transitions. Word has length 24 [2020-07-21 11:13:31,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:31,703 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 175 transitions. [2020-07-21 11:13:31,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 175 transitions. [2020-07-21 11:13:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 11:13:31,704 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:31,704 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] [2020-07-21 11:13:31,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:31,918 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:31,920 INFO L82 PathProgramCache]: Analyzing trace with hash 106179553, now seen corresponding path program 1 times [2020-07-21 11:13:31,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:31,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441252600] [2020-07-21 11:13:31,921 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 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 [2020-07-21 11:13:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:31,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 11:13:31,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:13:31,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:31,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441252600] [2020-07-21 11:13:31,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:31,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:31,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111071477] [2020-07-21 11:13:31,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:31,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:31,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:31,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:31,997 INFO L87 Difference]: Start difference. First operand 95 states and 175 transitions. Second operand 3 states. [2020-07-21 11:13:32,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:32,064 INFO L93 Difference]: Finished difference Result 222 states and 412 transitions. [2020-07-21 11:13:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:32,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-21 11:13:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:32,069 INFO L225 Difference]: With dead ends: 222 [2020-07-21 11:13:32,070 INFO L226 Difference]: Without dead ends: 132 [2020-07-21 11:13:32,074 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 [2020-07-21 11:13:32,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-07-21 11:13:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-07-21 11:13:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-07-21 11:13:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 237 transitions. [2020-07-21 11:13:32,108 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 237 transitions. Word has length 24 [2020-07-21 11:13:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:32,109 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 237 transitions. [2020-07-21 11:13:32,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 237 transitions. [2020-07-21 11:13:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 11:13:32,113 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:32,113 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] [2020-07-21 11:13:32,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:32,320 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:32,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:32,321 INFO L82 PathProgramCache]: Analyzing trace with hash 106172361, now seen corresponding path program 1 times [2020-07-21 11:13:32,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:32,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174342083] [2020-07-21 11:13:32,323 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 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 [2020-07-21 11:13:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:32,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 11:13:32,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:13:32,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:32,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174342083] [2020-07-21 11:13:32,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:32,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:32,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140274118] [2020-07-21 11:13:32,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:32,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:32,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:32,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:32,405 INFO L87 Difference]: Start difference. First operand 130 states and 237 transitions. Second operand 3 states. [2020-07-21 11:13:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:32,425 INFO L93 Difference]: Finished difference Result 179 states and 322 transitions. [2020-07-21 11:13:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:32,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-21 11:13:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:32,428 INFO L225 Difference]: With dead ends: 179 [2020-07-21 11:13:32,428 INFO L226 Difference]: Without dead ends: 130 [2020-07-21 11:13:32,429 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 [2020-07-21 11:13:32,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-21 11:13:32,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-07-21 11:13:32,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 11:13:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 230 transitions. [2020-07-21 11:13:32,441 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 230 transitions. Word has length 24 [2020-07-21 11:13:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:32,442 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 230 transitions. [2020-07-21 11:13:32,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 230 transitions. [2020-07-21 11:13:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 11:13:32,444 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:32,444 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] [2020-07-21 11:13:32,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:32,658 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:32,660 INFO L82 PathProgramCache]: Analyzing trace with hash -914888801, now seen corresponding path program 1 times [2020-07-21 11:13:32,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:32,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259432038] [2020-07-21 11:13:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 11:13:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:13:32,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:13:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:13:32,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:13:32,768 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 11:13:32,769 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:13:32,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:33,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:13:33 BoogieIcfgContainer [2020-07-21 11:13:33,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:13:33,047 INFO L168 Benchmark]: Toolchain (without parser) took 3294.65 ms. Allocated memory was 138.4 MB in the beginning and 236.5 MB in the end (delta: 98.0 MB). Free memory was 101.6 MB in the beginning and 178.6 MB in the end (delta: -77.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:33,047 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 11:13:33,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.11 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 89.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:33,049 INFO L168 Benchmark]: Boogie Preprocessor took 133.29 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 89.9 MB in the beginning and 181.0 MB in the end (delta: -91.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:33,050 INFO L168 Benchmark]: RCFGBuilder took 494.49 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 157.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:33,052 INFO L168 Benchmark]: TraceAbstraction took 2325.03 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 157.5 MB in the beginning and 178.6 MB in the end (delta: -21.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:33,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.11 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 89.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.29 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 89.9 MB in the beginning and 181.0 MB in the end (delta: -91.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.49 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 157.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2325.03 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 157.5 MB in the beginning and 178.6 MB in the end (delta: -21.2 MB). Peak memory consumption was 11.9 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 5382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 574 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...