/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:34:44,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:34:44,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:34:44,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:34:44,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:34:44,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:34:44,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:34:44,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:34:44,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:34:44,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:34:44,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:34:44,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:34:44,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:34:44,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:34:44,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:34:44,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:34:44,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:34:44,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:34:44,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:34:44,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:34:44,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:34:44,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:34:44,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:34:44,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:34:44,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:34:44,991 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 [2020-08-22 16:34:45,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:34:45,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:34:45,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:34:45,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:34:45,016 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:34:45,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:34:45,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:34:45,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:34:45,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:34:45,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:34:45,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:34:45,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:34:45,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:34:45,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:34:45,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:34:45,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:34:45,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:34:45,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:34:45,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:34:45,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:34:45,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:34:45,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:34:45,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:34:45,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:34:45,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:34:45,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:34:45,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:34:45,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:34:45,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:34:45,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:34:45,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:34:45,328 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:34:45,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:34:45,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:34:45,333 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:34:45,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-08-22 16:34:45,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1b85a31/e78bea727926468eab90f5c91402cd5b/FLAG691a1b7ab [2020-08-22 16:34:45,914 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:34:45,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-08-22 16:34:45,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1b85a31/e78bea727926468eab90f5c91402cd5b/FLAG691a1b7ab [2020-08-22 16:34:46,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1b85a31/e78bea727926468eab90f5c91402cd5b [2020-08-22 16:34:46,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:34:46,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:34:46,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:34:46,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:34:46,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:34:46,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:34:46" (1/1) ... [2020-08-22 16:34:46,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5790f45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46, skipping insertion in model container [2020-08-22 16:34:46,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:34:46" (1/1) ... [2020-08-22 16:34:46,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:34:46,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:34:46,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:34:46,570 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:34:46,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:34:46,605 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:34:46,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46 WrapperNode [2020-08-22 16:34:46,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:34:46,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:34:46,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:34:46,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:34:46,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46" (1/1) ... [2020-08-22 16:34:46,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46" (1/1) ... [2020-08-22 16:34:46,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46" (1/1) ... [2020-08-22 16:34:46,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46" (1/1) ... [2020-08-22 16:34:46,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46" (1/1) ... [2020-08-22 16:34:46,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46" (1/1) ... [2020-08-22 16:34:46,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46" (1/1) ... [2020-08-22 16:34:46,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:34:46,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:34:46,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:34:46,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:34:46,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46" (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 [2020-08-22 16:34:46,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:34:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:34:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-22 16:34:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-08-22 16:34:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:34:46,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 16:34:46,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:34:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-22 16:34:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-08-22 16:34:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:34:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:34:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:34:47,001 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:34:47,002 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:34:47,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:34:47 BoogieIcfgContainer [2020-08-22 16:34:47,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:34:47,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:34:47,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:34:47,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:34:47,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:34:46" (1/3) ... [2020-08-22 16:34:47,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b15a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:34:47, skipping insertion in model container [2020-08-22 16:34:47,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:46" (2/3) ... [2020-08-22 16:34:47,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b15a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:34:47, skipping insertion in model container [2020-08-22 16:34:47,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:34:47" (3/3) ... [2020-08-22 16:34:47,021 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2020-08-22 16:34:47,038 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:34:47,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:34:47,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:34:47,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:34:47,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:34:47,099 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:34:47,100 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:34:47,100 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:34:47,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:34:47,101 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:34:47,101 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:34:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-22 16:34:47,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 16:34:47,144 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:47,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:47,146 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:47,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:47,155 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2020-08-22 16:34:47,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:47,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52114247] [2020-08-22 16:34:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:34:47,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52114247] [2020-08-22 16:34:47,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:34:47,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:34:47,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537046544] [2020-08-22 16:34:47,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:34:47,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:47,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:34:47,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:47,493 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-08-22 16:34:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:47,549 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-22 16:34:47,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:34:47,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 16:34:47,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:47,562 INFO L225 Difference]: With dead ends: 40 [2020-08-22 16:34:47,563 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 16:34:47,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 16:34:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-22 16:34:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 16:34:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-22 16:34:47,611 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2020-08-22 16:34:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:47,611 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-22 16:34:47,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:34:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-22 16:34:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:34:47,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:47,614 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] [2020-08-22 16:34:47,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:34:47,615 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:47,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2020-08-22 16:34:47,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:47,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799105846] [2020-08-22 16:34:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:34:47,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799105846] [2020-08-22 16:34:47,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:34:47,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:34:47,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616902719] [2020-08-22 16:34:47,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:34:47,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:47,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:34:47,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:47,758 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-08-22 16:34:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:47,801 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-08-22 16:34:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:34:47,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-22 16:34:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:47,804 INFO L225 Difference]: With dead ends: 32 [2020-08-22 16:34:47,804 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 16:34:47,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 16:34:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-08-22 16:34:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 16:34:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-22 16:34:47,816 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2020-08-22 16:34:47,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:47,817 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-22 16:34:47,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:34:47,817 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-22 16:34:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:34:47,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:47,819 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] [2020-08-22 16:34:47,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:34:47,819 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:47,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2020-08-22 16:34:47,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:47,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385020411] [2020-08-22 16:34:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:34:48,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385020411] [2020-08-22 16:34:48,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:34:48,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 16:34:48,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577171608] [2020-08-22 16:34:48,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:34:48,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:48,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:34:48,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:34:48,079 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 8 states. [2020-08-22 16:34:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:48,149 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-08-22 16:34:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:34:48,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-22 16:34:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:48,151 INFO L225 Difference]: With dead ends: 48 [2020-08-22 16:34:48,152 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 16:34:48,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:34:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 16:34:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 16:34:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:34:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-22 16:34:48,161 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-08-22 16:34:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:48,162 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-22 16:34:48,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:34:48,162 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-22 16:34:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:34:48,163 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:48,163 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:48,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:34:48,164 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:48,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1451784300, now seen corresponding path program 1 times [2020-08-22 16:34:48,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:48,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245180559] [2020-08-22 16:34:48,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:34:48,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245180559] [2020-08-22 16:34:48,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:34:48,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:34:48,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15371974] [2020-08-22 16:34:48,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:34:48,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:48,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:34:48,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:48,343 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-08-22 16:34:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:48,391 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-22 16:34:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:34:48,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 16:34:48,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:48,395 INFO L225 Difference]: With dead ends: 50 [2020-08-22 16:34:48,396 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 16:34:48,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 16:34:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-08-22 16:34:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-22 16:34:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-22 16:34:48,413 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2020-08-22 16:34:48,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:48,414 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-22 16:34:48,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:34:48,415 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-22 16:34:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:34:48,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:48,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:48,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 16:34:48,418 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:48,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2020-08-22 16:34:48,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:48,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236097137] [2020-08-22 16:34:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:34:48,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236097137] [2020-08-22 16:34:48,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002922636] [2020-08-22 16:34:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 19 conjunts are in the unsatisfiable core [2020-08-22 16:34:48,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:34:48,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:48,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-08-22 16:34:48,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064992056] [2020-08-22 16:34:48,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 16:34:48,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:48,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 16:34:48,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:34:48,810 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 12 states. [2020-08-22 16:34:48,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:48,909 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-08-22 16:34:48,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:34:48,910 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-08-22 16:34:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:48,911 INFO L225 Difference]: With dead ends: 66 [2020-08-22 16:34:48,911 INFO L226 Difference]: Without dead ends: 46 [2020-08-22 16:34:48,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-08-22 16:34:48,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-08-22 16:34:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2020-08-22 16:34:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 16:34:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-08-22 16:34:48,920 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-08-22 16:34:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:48,920 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-08-22 16:34:48,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 16:34:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-08-22 16:34:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 16:34:48,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:48,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:49,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:49,137 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:49,137 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2020-08-22 16:34:49,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:49,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713462789] [2020-08-22 16:34:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 16:34:49,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713462789] [2020-08-22 16:34:49,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563802440] [2020-08-22 16:34:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2020-08-22 16:34:49,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 16:34:49,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:49,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-08-22 16:34:49,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970706808] [2020-08-22 16:34:49,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 16:34:49,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:49,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 16:34:49,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:34:49,587 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 12 states. [2020-08-22 16:34:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:49,701 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-08-22 16:34:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:34:49,702 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-08-22 16:34:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:49,704 INFO L225 Difference]: With dead ends: 70 [2020-08-22 16:34:49,704 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 16:34:49,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-08-22 16:34:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 16:34:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-08-22 16:34:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-22 16:34:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-08-22 16:34:49,714 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 34 [2020-08-22 16:34:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:49,714 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-08-22 16:34:49,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 16:34:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-08-22 16:34:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 16:34:49,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:49,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:49,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:49,932 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:49,933 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2020-08-22 16:34:49,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:49,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931868365] [2020-08-22 16:34:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:34:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-22 16:34:50,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931868365] [2020-08-22 16:34:50,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101162093] [2020-08-22 16:34:50,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:50,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:34:50,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:50,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2020-08-22 16:34:50,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-22 16:34:50,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:50,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 18 [2020-08-22 16:34:50,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184050805] [2020-08-22 16:34:50,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 16:34:50,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:50,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 16:34:50,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:34:50,437 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 18 states. [2020-08-22 16:34:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:50,577 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-08-22 16:34:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:34:50,578 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2020-08-22 16:34:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:50,578 INFO L225 Difference]: With dead ends: 58 [2020-08-22 16:34:50,579 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:34:50,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-08-22 16:34:50,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:34:50,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:34:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:34:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:34:50,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-08-22 16:34:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:50,582 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:34:50,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 16:34:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:34:50,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:34:50,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:50,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:34:50,821 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:34:50,821 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:34:50,821 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-22 16:34:50,821 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-22 16:34:50,821 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-08-22 16:34:50,822 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-08-22 16:34:50,822 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-08-22 16:34:50,822 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-08-22 16:34:50,822 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-08-22 16:34:50,822 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:34:50,822 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:34:50,822 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:34:50,823 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:34:50,823 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-08-22 16:34:50,823 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-08-22 16:34:50,823 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-08-22 16:34:50,823 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-08-22 16:34:50,823 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-08-22 16:34:50,823 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-08-22 16:34:50,828 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-08-22 16:34:50,829 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-08-22 16:34:50,829 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-08-22 16:34:50,829 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-08-22 16:34:50,829 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-08-22 16:34:50,830 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-08-22 16:34:50,831 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 16:34:50,832 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-08-22 16:34:50,832 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-08-22 16:34:50,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:34:50 BoogieIcfgContainer [2020-08-22 16:34:50,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:34:50,847 INFO L168 Benchmark]: Toolchain (without parser) took 4489.72 ms. Allocated memory was 147.8 MB in the beginning and 245.4 MB in the end (delta: 97.5 MB). Free memory was 103.4 MB in the beginning and 133.8 MB in the end (delta: -30.3 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:50,848 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:34:50,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.15 ms. Allocated memory is still 147.8 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:50,850 INFO L168 Benchmark]: Boogie Preprocessor took 132.66 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 93.7 MB in the beginning and 184.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:50,851 INFO L168 Benchmark]: RCFGBuilder took 268.19 ms. Allocated memory is still 205.5 MB. Free memory was 183.6 MB in the beginning and 171.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:50,854 INFO L168 Benchmark]: TraceAbstraction took 3829.33 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 170.8 MB in the beginning and 133.8 MB in the end (delta: 37.0 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:50,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.15 ms. Allocated memory is still 147.8 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.66 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 93.7 MB in the beginning and 184.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 268.19 ms. Allocated memory is still 205.5 MB. Free memory was 183.6 MB in the beginning and 171.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3829.33 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 170.8 MB in the beginning and 133.8 MB in the end (delta: 37.0 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 26 SDslu, 1296 SDs, 0 SdLazy, 295 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 159 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 27230 SizeOfPredicates, 11 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 50/78 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 correct! Received shutdown request...