/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/Problem12_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:11:46,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:11:46,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:11:46,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:11:46,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:11:46,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:11:46,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:11:46,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:11:46,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:11:46,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:11:46,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:11:46,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:11:46,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:11:46,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:11:46,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:11:46,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:11:46,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:11:46,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:11:46,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:11:46,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:11:46,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:11:46,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:11:46,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:11:46,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:11:46,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 19:11:46,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 19:11:46,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 19:11:46,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 19:11:46,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 19:11:46,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 19:11:46,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 19:11:46,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 19:11:46,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 19:11:46,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 19:11:46,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 19:11:46,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 19:11:46,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 19:11:46,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 19:11:46,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:11:46,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:11:46,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:11:46,742 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 19:11:46,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:11:46,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:11:46,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:11:46,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:11:46,763 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:11:46,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:11:46,764 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:11:46,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:11:46,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:11:46,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:11:46,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:11:46,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:11:46,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:11:46,766 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:11:46,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:11:46,767 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:11:46,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:11:46,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:11:46,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:11:46,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:11:46,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:11:46,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:11:46,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:11:46,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:11:46,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:11:46,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:11:46,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:11:46,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:11:46,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:11:47,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:11:47,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:11:47,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:11:47,081 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:11:47,081 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:11:47,082 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2019-11-06 19:11:47,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486d6aa40/b0ce95fd5f1d416087f382445b3a0cfe/FLAGd752d79d0 [2019-11-06 19:11:47,957 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:11:47,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2019-11-06 19:11:48,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486d6aa40/b0ce95fd5f1d416087f382445b3a0cfe/FLAGd752d79d0 [2019-11-06 19:11:48,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486d6aa40/b0ce95fd5f1d416087f382445b3a0cfe [2019-11-06 19:11:48,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:11:48,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:11:48,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:11:48,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:11:48,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:11:48,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:48" (1/1) ... [2019-11-06 19:11:48,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fac17dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:48, skipping insertion in model container [2019-11-06 19:11:48,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:48" (1/1) ... [2019-11-06 19:11:48,506 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:11:48,640 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:11:50,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:11:50,012 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:11:50,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:11:50,637 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:11:50,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50 WrapperNode [2019-11-06 19:11:50,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:11:50,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:11:50,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:11:50,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:11:50,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50" (1/1) ... [2019-11-06 19:11:50,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50" (1/1) ... [2019-11-06 19:11:50,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50" (1/1) ... [2019-11-06 19:11:50,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50" (1/1) ... [2019-11-06 19:11:50,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50" (1/1) ... [2019-11-06 19:11:50,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50" (1/1) ... [2019-11-06 19:11:50,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50" (1/1) ... [2019-11-06 19:11:50,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:11:50,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:11:50,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:11:50,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:11:50,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50" (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 19:11:50,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:11:50,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:11:50,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:11:50,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:11:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:11:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:11:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:11:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:11:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:11:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:11:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:11:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:11:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:11:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:11:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:11:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:11:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:11:55,801 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:11:55,801 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:11:55,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:55 BoogieIcfgContainer [2019-11-06 19:11:55,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:11:55,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:11:55,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:11:55,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:11:55,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:11:48" (1/3) ... [2019-11-06 19:11:55,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a5caf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:55, skipping insertion in model container [2019-11-06 19:11:55,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:50" (2/3) ... [2019-11-06 19:11:55,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a5caf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:55, skipping insertion in model container [2019-11-06 19:11:55,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:55" (3/3) ... [2019-11-06 19:11:55,822 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label49.c [2019-11-06 19:11:55,832 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:11:55,841 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:11:55,852 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:11:55,892 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:11:55,892 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:11:55,892 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:11:55,892 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:11:55,892 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:11:55,893 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:11:55,893 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:11:55,893 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:11:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 19:11:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-06 19:11:55,943 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:11:55,944 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] [2019-11-06 19:11:55,946 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:11:55,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:11:55,952 INFO L82 PathProgramCache]: Analyzing trace with hash 838851165, now seen corresponding path program 1 times [2019-11-06 19:11:55,961 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:11:55,961 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134821143] [2019-11-06 19:11:55,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:11:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:56,326 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 19:11:56,327 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134821143] [2019-11-06 19:11:56,328 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:11:56,328 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:11:56,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494045406] [2019-11-06 19:11:56,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:11:56,336 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:11:56,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:11:56,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:11:56,352 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-11-06 19:12:05,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:12:05,534 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2019-11-06 19:12:05,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 19:12:05,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2019-11-06 19:12:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:12:05,590 INFO L225 Difference]: With dead ends: 2471 [2019-11-06 19:12:05,590 INFO L226 Difference]: Without dead ends: 1568 [2019-11-06 19:12:05,611 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:12:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2019-11-06 19:12:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2019-11-06 19:12:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2019-11-06 19:12:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2869 transitions. [2019-11-06 19:12:05,794 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2869 transitions. Word has length 48 [2019-11-06 19:12:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:12:05,795 INFO L462 AbstractCegarLoop]: Abstraction has 1553 states and 2869 transitions. [2019-11-06 19:12:05,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:12:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2869 transitions. [2019-11-06 19:12:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-06 19:12:05,812 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:12:05,813 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, 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 19:12:05,813 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:12:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:12:05,814 INFO L82 PathProgramCache]: Analyzing trace with hash 728529281, now seen corresponding path program 1 times [2019-11-06 19:12:05,814 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:12:05,814 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297196617] [2019-11-06 19:12:05,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:12:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:12:06,222 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297196617] [2019-11-06 19:12:06,222 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:12:06,222 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:12:06,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119682716] [2019-11-06 19:12:06,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:12:06,229 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:12:06,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:12:06,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:12:06,230 INFO L87 Difference]: Start difference. First operand 1553 states and 2869 transitions. Second operand 9 states. [2019-11-06 19:12:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:12:19,795 INFO L93 Difference]: Finished difference Result 6335 states and 11853 transitions. [2019-11-06 19:12:19,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:12:19,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2019-11-06 19:12:19,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:12:19,829 INFO L225 Difference]: With dead ends: 6335 [2019-11-06 19:12:19,829 INFO L226 Difference]: Without dead ends: 4788 [2019-11-06 19:12:19,835 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-06 19:12:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2019-11-06 19:12:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4748. [2019-11-06 19:12:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4748 states. [2019-11-06 19:12:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 7752 transitions. [2019-11-06 19:12:19,994 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 7752 transitions. Word has length 125 [2019-11-06 19:12:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:12:19,995 INFO L462 AbstractCegarLoop]: Abstraction has 4748 states and 7752 transitions. [2019-11-06 19:12:19,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:12:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 7752 transitions. [2019-11-06 19:12:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-06 19:12:19,998 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:12:19,998 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, 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 19:12:19,998 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:12:19,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:12:19,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1145162067, now seen corresponding path program 1 times [2019-11-06 19:12:19,999 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:12:19,999 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132682794] [2019-11-06 19:12:20,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:12:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:12:20,313 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132682794] [2019-11-06 19:12:20,313 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:12:20,313 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 19:12:20,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531787989] [2019-11-06 19:12:20,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 19:12:20,315 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:12:20,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 19:12:20,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:12:20,316 INFO L87 Difference]: Start difference. First operand 4748 states and 7752 transitions. Second operand 7 states.