/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:48:46,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:48:46,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:48:46,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:48:46,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:48:46,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:48:46,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:48:46,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:48:46,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:48:46,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:48:46,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:48:46,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:48:46,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:48:46,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:48:46,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:48:46,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:48:46,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:48:46,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:48:46,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:48:46,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:48:46,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:48:46,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:48:46,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:48:46,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:48:46,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:48:46,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:48:46,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:48:46,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:48:46,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:48:46,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:48:46,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:48:46,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:48:46,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:48:46,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:48:46,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:48:46,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:48:46,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:48:46,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:48:46,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:48:46,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:48:46,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:48:46,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:48:46,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:48:46,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:48:46,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:48:46,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:48:46,836 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:48:46,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:48:46,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:48:46,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:48:46,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:48:46,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:48:46,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:48:46,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:48:46,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:48:46,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:48:46,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:48:46,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:48:46,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:48:46,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:48:46,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:48:46,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:48:46,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:48:46,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:48:46,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:48:46,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:48:46,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:48:46,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:48:46,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:48:46,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:48:46,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:48:46,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:48:47,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:48:47,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:48:47,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:48:47,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:48:47,131 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:48:47,132 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label09.c [2020-10-12 11:48:47,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e8378479/f36d1f35c2df4619b0062d2f5d2df551/FLAG8934089fe [2020-10-12 11:48:48,063 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:48:48,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label09.c [2020-10-12 11:48:48,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e8378479/f36d1f35c2df4619b0062d2f5d2df551/FLAG8934089fe [2020-10-12 11:48:48,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e8378479/f36d1f35c2df4619b0062d2f5d2df551 [2020-10-12 11:48:48,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:48:48,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:48:48,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:48:48,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:48:48,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:48:48,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:48:48" (1/1) ... [2020-10-12 11:48:48,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12eafce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:48, skipping insertion in model container [2020-10-12 11:48:48,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:48:48" (1/1) ... [2020-10-12 11:48:48,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:48:48,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:48:51,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:48:51,613 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:48:52,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:48:52,709 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:48:52,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52 WrapperNode [2020-10-12 11:48:52,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:48:52,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:48:52,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:48:52,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:48:52,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52" (1/1) ... [2020-10-12 11:48:52,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52" (1/1) ... [2020-10-12 11:48:52,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52" (1/1) ... [2020-10-12 11:48:52,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52" (1/1) ... [2020-10-12 11:48:52,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52" (1/1) ... [2020-10-12 11:48:52,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52" (1/1) ... [2020-10-12 11:48:53,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52" (1/1) ... [2020-10-12 11:48:53,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:48:53,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:48:53,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:48:53,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:48:53,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 11:48:53,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:48:53,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:48:53,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:48:53,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:48:53,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:48:53,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:48:53,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:48:53,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:48:53,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:48:53,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:48:53,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:48:53,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:48:53,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:48:53,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:48:53,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:48:53,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:48:53,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:48:53,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:48:53,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:48:53,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:48:53,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:48:53,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:48:53,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:48:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:48:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:49:01,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:49:01,035 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:49:01,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:49:01 BoogieIcfgContainer [2020-10-12 11:49:01,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:49:01,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:49:01,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:49:01,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:49:01,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:48:48" (1/3) ... [2020-10-12 11:49:01,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1b0072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:49:01, skipping insertion in model container [2020-10-12 11:49:01,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:48:52" (2/3) ... [2020-10-12 11:49:01,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1b0072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:49:01, skipping insertion in model container [2020-10-12 11:49:01,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:49:01" (3/3) ... [2020-10-12 11:49:01,062 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label09.c [2020-10-12 11:49:01,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:49:01,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:49:01,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:49:01,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:49:01,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:49:01,124 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:49:01,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:49:01,124 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:49:01,125 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:49:01,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:49:01,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:49:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 11:49:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2020-10-12 11:49:01,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:49:01,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 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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, 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, 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, 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, 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, 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] [2020-10-12 11:49:01,271 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:49:01,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:49:01,278 INFO L82 PathProgramCache]: Analyzing trace with hash 692155993, now seen corresponding path program 1 times [2020-10-12 11:49:01,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:49:01,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575339058] [2020-10-12 11:49:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:49:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:49:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:49:07,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:49:07,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1714 [2020-10-12 11:49:07,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:49:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5158 [2020-10-12 11:49:07,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:49:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:49:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:49:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1708 [2020-10-12 11:49:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:49:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:49:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:49:09,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:49:09,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:49:09,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:49:09,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:49:09,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:49:09,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:49:09,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:49:09,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:49:09,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:49:09,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:49:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:49:11,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575339058] [2020-10-12 11:49:11,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:49:11,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 11:49:11,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664806704] [2020-10-12 11:49:11,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 11:49:11,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:49:11,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 11:49:11,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 11:49:11,264 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-12 11:49:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:49:26,924 INFO L93 Difference]: Finished difference Result 6311 states and 11851 transitions. [2020-10-12 11:49:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:49:26,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1692 [2020-10-12 11:49:26,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:49:26,982 INFO L225 Difference]: With dead ends: 6311 [2020-10-12 11:49:26,982 INFO L226 Difference]: Without dead ends: 4025 [2020-10-12 11:49:26,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:49:27,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-12 11:49:27,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996. [2020-10-12 11:49:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-10-12 11:49:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions. [2020-10-12 11:49:27,190 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1692 [2020-10-12 11:49:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:49:27,196 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions. [2020-10-12 11:49:27,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 11:49:27,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions. [2020-10-12 11:49:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1702 [2020-10-12 11:49:27,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:49:27,310 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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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, 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, 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, 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, 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, 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] [2020-10-12 11:49:27,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:49:27,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:49:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:49:27,312 INFO L82 PathProgramCache]: Analyzing trace with hash -737624690, now seen corresponding path program 1 times [2020-10-12 11:49:27,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:49:27,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918895480] [2020-10-12 11:49:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:49:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:49:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:49:29,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:49:32,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:49:32,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1725 [2020-10-12 11:49:32,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:49:32,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 11:49:32,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:49:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:49:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 11:49:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1705 [2020-10-12 11:49:32,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:49:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:49:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:49:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:49:34,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:49:34,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:49:34,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:49:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:49:34,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:49:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:49:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:49:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:49:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:49:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:49:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:49:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:49:34,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:49:34,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:49:34,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:49:34,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:49:34,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:49:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:49:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:49:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 11:49:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:49:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:49:36,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918895480] [2020-10-12 11:49:36,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:49:36,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:49:36,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163244015] [2020-10-12 11:49:36,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:49:36,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:49:36,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:49:36,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:49:36,732 INFO L87 Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 5 states. [2020-10-12 11:49:55,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:49:55,100 INFO L93 Difference]: Finished difference Result 11638 states and 18922 transitions. [2020-10-12 11:49:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:49:55,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1701 [2020-10-12 11:49:55,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:49:55,144 INFO L225 Difference]: With dead ends: 11638 [2020-10-12 11:49:55,144 INFO L226 Difference]: Without dead ends: 7648 [2020-10-12 11:49:55,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:49:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7648 states. [2020-10-12 11:49:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7648 to 7570. [2020-10-12 11:49:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7570 states. [2020-10-12 11:49:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 10961 transitions. [2020-10-12 11:49:55,344 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 10961 transitions. Word has length 1701 [2020-10-12 11:49:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:49:55,347 INFO L479 AbstractCegarLoop]: Abstraction has 7570 states and 10961 transitions. [2020-10-12 11:49:55,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:49:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 10961 transitions. [2020-10-12 11:49:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2020-10-12 11:49:55,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:49:55,394 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:49:55,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:49:55,395 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:49:55,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:49:55,396 INFO L82 PathProgramCache]: Analyzing trace with hash -144763030, now seen corresponding path program 1 times [2020-10-12 11:49:55,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:49:55,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060178666] [2020-10-12 11:49:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:49:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:49:56,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:49:56,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:00,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:00,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-12 11:50:00,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:50:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-12 11:50:00,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:50:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:50:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1705 [2020-10-12 11:50:00,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:01,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:50:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:01,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:01,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:01,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:50:01,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:50:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:50:01,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:50:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:50:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:50:01,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:50:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:01,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:01,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:01,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:50:01,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:50:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:50:01,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:50:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:50:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 11:50:01,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:50:04,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060178666] [2020-10-12 11:50:04,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:50:04,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:50:04,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511280660] [2020-10-12 11:50:04,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:50:04,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:50:04,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:50:04,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:50:04,127 INFO L87 Difference]: Start difference. First operand 7570 states and 10961 transitions. Second operand 5 states. [2020-10-12 11:50:23,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:50:23,395 INFO L93 Difference]: Finished difference Result 22196 states and 32575 transitions. [2020-10-12 11:50:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:50:23,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1703 [2020-10-12 11:50:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:50:23,470 INFO L225 Difference]: With dead ends: 22196 [2020-10-12 11:50:23,471 INFO L226 Difference]: Without dead ends: 14632 [2020-10-12 11:50:23,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:50:23,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14632 states. [2020-10-12 11:50:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14632 to 14599. [2020-10-12 11:50:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14599 states. [2020-10-12 11:50:23,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14599 states to 14599 states and 18999 transitions. [2020-10-12 11:50:23,821 INFO L78 Accepts]: Start accepts. Automaton has 14599 states and 18999 transitions. Word has length 1703 [2020-10-12 11:50:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:50:23,824 INFO L479 AbstractCegarLoop]: Abstraction has 14599 states and 18999 transitions. [2020-10-12 11:50:23,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:50:23,825 INFO L276 IsEmpty]: Start isEmpty. Operand 14599 states and 18999 transitions. [2020-10-12 11:50:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-12 11:50:23,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:50:23,891 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, 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, 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, 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, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:50:23,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:50:23,891 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:50:23,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:50:23,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1056696156, now seen corresponding path program 1 times [2020-10-12 11:50:23,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:50:23,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116229908] [2020-10-12 11:50:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:50:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:29,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:29,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1731 [2020-10-12 11:50:29,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:50:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 11:50:29,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:50:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 11:50:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1706 [2020-10-12 11:50:29,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:50:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:29,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:29,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:29,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:50:29,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:50:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:50:29,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:50:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:50:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:50:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:29,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:50:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:29,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:29,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:50:29,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:50:29,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:50:29,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:50:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:50:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 11:50:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:50:31,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116229908] [2020-10-12 11:50:31,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:50:31,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:50:31,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370049894] [2020-10-12 11:50:31,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:50:31,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:50:31,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:50:31,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:50:31,534 INFO L87 Difference]: Start difference. First operand 14599 states and 18999 transitions. Second operand 5 states. [2020-10-12 11:50:49,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:50:49,399 INFO L93 Difference]: Finished difference Result 36246 states and 48903 transitions. [2020-10-12 11:50:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:50:49,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1707 [2020-10-12 11:50:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:50:49,468 INFO L225 Difference]: With dead ends: 36246 [2020-10-12 11:50:49,468 INFO L226 Difference]: Without dead ends: 21653 [2020-10-12 11:50:49,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:50:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21653 states. [2020-10-12 11:50:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21653 to 21632. [2020-10-12 11:50:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21632 states. [2020-10-12 11:50:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21632 states to 21632 states and 27231 transitions. [2020-10-12 11:50:50,050 INFO L78 Accepts]: Start accepts. Automaton has 21632 states and 27231 transitions. Word has length 1707 [2020-10-12 11:50:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:50:50,052 INFO L479 AbstractCegarLoop]: Abstraction has 21632 states and 27231 transitions. [2020-10-12 11:50:50,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:50:50,052 INFO L276 IsEmpty]: Start isEmpty. Operand 21632 states and 27231 transitions. [2020-10-12 11:50:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2020-10-12 11:50:50,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:50:50,123 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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, 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, 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, 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, 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, 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] [2020-10-12 11:50:50,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:50:50,124 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:50:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:50:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash 441836474, now seen corresponding path program 1 times [2020-10-12 11:50:50,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:50:50,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444277481] [2020-10-12 11:50:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:50:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:50,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:51,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:55,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:55,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-12 11:50:55,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:50:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-12 11:50:55,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 11:50:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 11:50:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 979 [2020-10-12 11:50:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:58,612 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 31 [2020-10-12 11:50:58,847 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-10-12 11:50:59,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:50:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:59,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:59,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:50:59,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:50:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:50:59,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:50:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:50:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:50:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:59,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:50:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:59,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:59,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 11:50:59,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:50:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:50:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:50:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:50:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:50:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:51:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:51:13,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444277481] [2020-10-12 11:51:13,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:51:13,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 11:51:13,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507008480] [2020-10-12 11:51:13,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 11:51:13,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:51:13,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 11:51:13,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:51:13,760 INFO L87 Difference]: Start difference. First operand 21632 states and 27231 transitions. Second operand 21 states. [2020-10-12 11:51:30,948 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-12 11:51:31,224 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-12 11:51:34,831 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-12 11:51:38,916 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-10-12 11:51:39,473 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-10-12 11:51:39,684 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-12 11:51:47,912 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-12 11:51:48,130 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-12 11:52:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:52:06,739 INFO L93 Difference]: Finished difference Result 44239 states and 56501 transitions. [2020-10-12 11:52:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 11:52:06,741 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1714 [2020-10-12 11:52:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:52:06,817 INFO L225 Difference]: With dead ends: 44239 [2020-10-12 11:52:06,817 INFO L226 Difference]: Without dead ends: 22613 [2020-10-12 11:52:06,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 11:52:06,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22613 states. [2020-10-12 11:52:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22613 to 22600. [2020-10-12 11:52:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22600 states. [2020-10-12 11:52:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22600 states to 22600 states and 28215 transitions. [2020-10-12 11:52:07,219 INFO L78 Accepts]: Start accepts. Automaton has 22600 states and 28215 transitions. Word has length 1714 [2020-10-12 11:52:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:52:07,220 INFO L479 AbstractCegarLoop]: Abstraction has 22600 states and 28215 transitions. [2020-10-12 11:52:07,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 11:52:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 22600 states and 28215 transitions. [2020-10-12 11:52:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1730 [2020-10-12 11:52:07,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:52:07,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2020-10-12 11:52:07,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:52:07,290 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:52:07,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:52:07,291 INFO L82 PathProgramCache]: Analyzing trace with hash 926731333, now seen corresponding path program 1 times [2020-10-12 11:52:07,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:52:07,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607024985] [2020-10-12 11:52:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:52:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:52:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:52:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:52:08,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:52:12,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:52:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1755 [2020-10-12 11:52:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:52:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-12 11:52:12,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:52:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 11:52:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 11:52:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-12 11:52:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:52:14,905 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-12 11:52:15,021 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-12 11:52:15,144 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-12 11:52:15,264 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-12 11:52:15,390 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-12 11:52:15,506 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-12 11:52:15,633 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-12 11:52:15,756 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-12 11:52:16,016 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-12 11:52:16,149 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-12 11:52:16,600 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-12 11:52:16,762 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-10-12 11:52:17,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:52:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:52:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:52:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:52:17,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:52:17,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:52:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:52:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:52:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:52:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:52:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:52:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:52:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:52:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:52:17,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:52:17,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:52:17,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:52:17,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:52:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:52:17,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:52:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:52:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:52:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:52:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:52:17,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:52:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:52:17,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:52:17,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:52:17,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:52:17,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:52:17,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:52:17,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:52:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 11:52:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:52:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:52:17,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0