/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/eca-rers2012/Problem18_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:21:04,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:21:04,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:21:04,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:21:04,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:21:04,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:21:04,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:21:04,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:21:04,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:21:04,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:21:04,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:21:04,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:21:04,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:21:04,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:21:04,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:21:04,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:21:04,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:21:04,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:21:04,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:21:04,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:21:04,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:21:04,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:21:04,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:21:04,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:21:04,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:21:04,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:21:04,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:21:04,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:21:04,835 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 [2019-11-06 19:21:04,857 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:21:04,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:21:04,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:21:04,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:21:04,861 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:21:04,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:21:04,861 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:21:04,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:21:04,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:21:04,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:21:04,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:21:04,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:21:04,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:21:04,863 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:21:04,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:21:04,863 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:21:04,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:21:04,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:21:04,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:21:04,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:21:04,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:21:04,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:21:04,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:21:04,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:21:04,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:21:04,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:21:04,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:21:04,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:21:04,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:21:05,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:21:05,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:21:05,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:21:05,154 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:21:05,155 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:21:05,155 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label41.c [2019-11-06 19:21:05,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/472052c6c/5478d34c70e2422a8b29486590e5d762/FLAG590dbb459 [2019-11-06 19:21:05,961 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:21:05,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label41.c [2019-11-06 19:21:05,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/472052c6c/5478d34c70e2422a8b29486590e5d762/FLAG590dbb459 [2019-11-06 19:21:06,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/472052c6c/5478d34c70e2422a8b29486590e5d762 [2019-11-06 19:21:06,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:21:06,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:21:06,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:21:06,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:21:06,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:21:06,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:21:06" (1/1) ... [2019-11-06 19:21:06,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134500a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:06, skipping insertion in model container [2019-11-06 19:21:06,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:21:06" (1/1) ... [2019-11-06 19:21:06,105 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:21:06,237 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:21:07,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:21:07,648 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:21:08,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:21:08,144 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:21:08,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08 WrapperNode [2019-11-06 19:21:08,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:21:08,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:21:08,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:21:08,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:21:08,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08" (1/1) ... [2019-11-06 19:21:08,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08" (1/1) ... [2019-11-06 19:21:08,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08" (1/1) ... [2019-11-06 19:21:08,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08" (1/1) ... [2019-11-06 19:21:08,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08" (1/1) ... [2019-11-06 19:21:08,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08" (1/1) ... [2019-11-06 19:21:08,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08" (1/1) ... [2019-11-06 19:21:08,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:21:08,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:21:08,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:21:08,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:21:08,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08" (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 [2019-11-06 19:21:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:21:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:21:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:21:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:21:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:21:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:21:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:21:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:21:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:21:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:21:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:21:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:21:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:21:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:21:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:21:12,635 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:21:12,639 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:21:12,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:21:12 BoogieIcfgContainer [2019-11-06 19:21:12,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:21:12,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:21:12,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:21:12,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:21:12,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:21:06" (1/3) ... [2019-11-06 19:21:12,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a978459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:21:12, skipping insertion in model container [2019-11-06 19:21:12,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:08" (2/3) ... [2019-11-06 19:21:12,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a978459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:21:12, skipping insertion in model container [2019-11-06 19:21:12,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:21:12" (3/3) ... [2019-11-06 19:21:12,658 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label41.c [2019-11-06 19:21:12,669 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:21:12,679 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:21:12,693 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:21:12,742 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:21:12,742 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:21:12,742 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:21:12,742 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:21:12,742 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:21:12,743 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:21:12,743 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:21:12,743 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:21:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 19:21:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 19:21:12,801 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:12,803 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:21:12,805 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:12,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:12,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1857316166, now seen corresponding path program 1 times [2019-11-06 19:21:12,822 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:12,822 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130795131] [2019-11-06 19:21:12,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:13,329 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130795131] [2019-11-06 19:21:13,330 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:21:13,330 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:21:13,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629587969] [2019-11-06 19:21:13,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:21:13,337 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:13,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:21:13,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:21:13,354 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-11-06 19:21:24,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:24,476 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-11-06 19:21:24,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:21:24,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-11-06 19:21:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:24,510 INFO L225 Difference]: With dead ends: 2984 [2019-11-06 19:21:24,510 INFO L226 Difference]: Without dead ends: 2142 [2019-11-06 19:21:24,521 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:21:24,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-11-06 19:21:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-11-06 19:21:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-11-06 19:21:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-11-06 19:21:24,753 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 71 [2019-11-06 19:21:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:21:24,756 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-11-06 19:21:24,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:21:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-11-06 19:21:24,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-06 19:21:24,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:24,768 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2019-11-06 19:21:24,769 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:24,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1967300729, now seen corresponding path program 1 times [2019-11-06 19:21:24,770 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:24,770 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693325542] [2019-11-06 19:21:24,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:25,189 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693325542] [2019-11-06 19:21:25,190 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:21:25,190 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:21:25,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137026796] [2019-11-06 19:21:25,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:21:25,193 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:25,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:21:25,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:21:25,193 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-11-06 19:21:38,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:38,056 INFO L93 Difference]: Finished difference Result 8641 states and 15457 transitions. [2019-11-06 19:21:38,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:21:38,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 144 [2019-11-06 19:21:38,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:38,091 INFO L225 Difference]: With dead ends: 8641 [2019-11-06 19:21:38,091 INFO L226 Difference]: Without dead ends: 6515 [2019-11-06 19:21:38,098 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-06 19:21:38,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2019-11-06 19:21:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 6485. [2019-11-06 19:21:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6485 states. [2019-11-06 19:21:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 9454 transitions. [2019-11-06 19:21:38,274 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 9454 transitions. Word has length 144 [2019-11-06 19:21:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:21:38,275 INFO L462 AbstractCegarLoop]: Abstraction has 6485 states and 9454 transitions. [2019-11-06 19:21:38,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:21:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 9454 transitions. [2019-11-06 19:21:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-06 19:21:38,280 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:38,281 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:21:38,281 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:38,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:38,281 INFO L82 PathProgramCache]: Analyzing trace with hash -284922874, now seen corresponding path program 1 times [2019-11-06 19:21:38,282 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:38,282 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097376628] [2019-11-06 19:21:38,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:38,656 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097376628] [2019-11-06 19:21:38,657 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034396023] [2019-11-06 19:21:38,657 INFO L94 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 [2019-11-06 19:21:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:38,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:21:38,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:21:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:38,877 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:21:38,877 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-11-06 19:21:38,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692890712] [2019-11-06 19:21:38,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:21:38,882 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:38,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:21:38,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:21:38,889 INFO L87 Difference]: Start difference. First operand 6485 states and 9454 transitions. Second operand 3 states. [2019-11-06 19:21:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:43,277 INFO L93 Difference]: Finished difference Result 19381 states and 28727 transitions. [2019-11-06 19:21:43,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:21:43,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-11-06 19:21:43,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:43,337 INFO L225 Difference]: With dead ends: 19381 [2019-11-06 19:21:43,337 INFO L226 Difference]: Without dead ends: 10759 [2019-11-06 19:21:43,357 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:21:43,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10759 states.