/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/Problem04_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:41:35,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:41:35,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:41:35,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:41:35,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:41:35,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:41:35,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:41:35,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:41:35,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:41:35,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:41:35,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:41:35,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:41:35,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:41:35,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:41:35,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:41:35,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:41:35,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:41:35,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:41:35,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:41:35,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:41:35,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:41:35,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:41:35,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:41:35,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:41:35,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:41:35,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:41:35,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:41:35,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:41:35,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:41:35,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:41:35,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:41:35,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:41:35,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:41:35,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:41:35,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:41:35,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:41:35,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:41:35,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:41:35,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:41:35,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:41:35,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:41:35,811 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 11:41:35,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:41:35,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:41:35,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:41:35,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:41:35,836 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:41:35,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:41:35,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:41:35,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:41:35,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:41:35,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:41:35,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:41:35,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:41:35,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:41:35,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:41:35,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:41:35,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:41:35,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:41:35,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:41:35,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:41:35,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:41:35,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:41:35,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:41:35,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:41:35,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:41:35,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:41:35,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:41:35,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:41:35,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:41:35,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:41:35,841 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 11:41:36,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:41:36,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:41:36,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:41:36,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:41:36,193 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:41:36,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label42.c [2020-10-12 11:41:36,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a9fda675/536bfee591ee4ccb8b62bd79b38195e7/FLAGf92b27aac [2020-10-12 11:41:37,052 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:41:37,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label42.c [2020-10-12 11:41:37,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a9fda675/536bfee591ee4ccb8b62bd79b38195e7/FLAGf92b27aac [2020-10-12 11:41:37,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a9fda675/536bfee591ee4ccb8b62bd79b38195e7 [2020-10-12 11:41:37,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:41:37,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:41:37,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:41:37,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:41:37,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:41:37,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:41:37" (1/1) ... [2020-10-12 11:41:37,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:37, skipping insertion in model container [2020-10-12 11:41:37,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:41:37" (1/1) ... [2020-10-12 11:41:37,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:41:37,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:41:38,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:41:38,993 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:41:39,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:41:39,662 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:41:39,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39 WrapperNode [2020-10-12 11:41:39,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:41:39,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:41:39,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:41:39,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:41:39,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39" (1/1) ... [2020-10-12 11:41:39,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39" (1/1) ... [2020-10-12 11:41:39,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39" (1/1) ... [2020-10-12 11:41:39,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39" (1/1) ... [2020-10-12 11:41:39,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39" (1/1) ... [2020-10-12 11:41:39,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39" (1/1) ... [2020-10-12 11:41:39,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39" (1/1) ... [2020-10-12 11:41:39,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:41:39,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:41:39,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:41:39,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:41:39,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39" (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 11:41:40,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:41:40,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:41:40,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:41:40,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:41:40,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:41:40,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:41:40,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:41:40,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:41:40,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:41:40,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:41:40,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:41:40,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:41:40,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:41:40,028 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:41:40,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:41:40,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:41:40,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:41:44,546 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:41:44,547 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:41:44,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:44 BoogieIcfgContainer [2020-10-12 11:41:44,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:41:44,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:41:44,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:41:44,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:41:44,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:41:37" (1/3) ... [2020-10-12 11:41:44,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354278c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:44, skipping insertion in model container [2020-10-12 11:41:44,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:39" (2/3) ... [2020-10-12 11:41:44,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354278c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:44, skipping insertion in model container [2020-10-12 11:41:44,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:44" (3/3) ... [2020-10-12 11:41:44,570 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label42.c [2020-10-12 11:41:44,582 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:41:44,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:41:44,608 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:41:44,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:41:44,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:41:44,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:41:44,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:41:44,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:41:44,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:41:44,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:41:44,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:41:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:41:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-12 11:41:44,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:41:44,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:44,741 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:41:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:41:44,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1829332667, now seen corresponding path program 1 times [2020-10-12 11:41:44,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:41:44,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864234677] [2020-10-12 11:41:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:41:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:50,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:50,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-12 11:41:50,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:41:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-12 11:41:50,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:41:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:41:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:41:50,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:41:52,002 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-12 11:41:52,123 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-12 11:41:52,246 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-12 11:41:53,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:41:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:53,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:53,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:41:53,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:41:53,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:41:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:41:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:57,865 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 11:41:57,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864234677] [2020-10-12 11:41:57,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:41:57,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:41:57,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509804474] [2020-10-12 11:41:57,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:41:57,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:41:57,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:41:57,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:41:57,893 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:42:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:42:12,291 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:42:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:42:12,296 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 826 [2020-10-12 11:42:12,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:42:12,342 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:42:12,342 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:42:12,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:42:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:42:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:42:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:42:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:42:12,486 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 826 [2020-10-12 11:42:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:42:12,488 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:42:12,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:42:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:42:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-12 11:42:12,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:42:12,520 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:42:12,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:42:12,520 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:42:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:42:12,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1538766732, now seen corresponding path program 1 times [2020-10-12 11:42:12,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:42:12,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587678755] [2020-10-12 11:42:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:42:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:17,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:17,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 861 [2020-10-12 11:42:17,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:42:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 11:42:17,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:42:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 11:42:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-12 11:42:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 11:42:20,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:42:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:20,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:20,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:20,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:42:20,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:20,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:42:20,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:42:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:20,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:42:20,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:42:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:20,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:20,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:20,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:42:20,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:20,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:42:20,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:42:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:42:20,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:42:23,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587678755] [2020-10-12 11:42:23,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:42:23,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:42:23,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156083119] [2020-10-12 11:42:23,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:42:23,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:23,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:42:23,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:42:23,693 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-12 11:42:24,110 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:42:24,461 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:42:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:42:38,237 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-12 11:42:38,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:42:38,239 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 845 [2020-10-12 11:42:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:42:38,252 INFO L225 Difference]: With dead ends: 3123 [2020-10-12 11:42:38,252 INFO L226 Difference]: Without dead ends: 2276 [2020-10-12 11:42:38,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:42:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-12 11:42:38,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-12 11:42:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-12 11:42:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-12 11:42:38,311 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 845 [2020-10-12 11:42:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:42:38,312 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-12 11:42:38,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:42:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-12 11:42:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2020-10-12 11:42:38,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:42:38,339 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:38,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:42:38,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:42:38,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:42:38,340 INFO L82 PathProgramCache]: Analyzing trace with hash -298489754, now seen corresponding path program 1 times [2020-10-12 11:42:38,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:42:38,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080561788] [2020-10-12 11:42:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:42:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:39,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:43,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:43,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 868 [2020-10-12 11:42:43,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:42:43,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 11:42:43,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:42:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:42:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-12 11:42:43,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:42:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:45,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:45,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:45,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:42:45,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:42:45,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:42:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:42:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:42:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:45,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:45,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:45,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:42:45,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:42:45,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:42:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 11:42:45,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:42:48,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080561788] [2020-10-12 11:42:48,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:42:48,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:42:48,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851034533] [2020-10-12 11:42:48,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:42:48,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:48,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:42:48,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:42:48,854 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-12 11:42:54,054 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-12 11:42:54,927 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:42:55,156 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-12 11:42:55,407 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-12 11:42:55,846 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-12 11:42:57,183 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-12 11:43:01,365 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 11:43:01,777 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-12 11:43:01,964 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-12 11:43:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:07,546 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-12 11:43:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:43:07,547 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 852 [2020-10-12 11:43:07,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:07,561 INFO L225 Difference]: With dead ends: 4329 [2020-10-12 11:43:07,561 INFO L226 Difference]: Without dead ends: 2786 [2020-10-12 11:43:07,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-10-12 11:43:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-12 11:43:07,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-12 11:43:07,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-12 11:43:07,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-12 11:43:07,627 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 852 [2020-10-12 11:43:07,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:07,629 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-12 11:43:07,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:43:07,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-12 11:43:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2020-10-12 11:43:07,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:07,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:43:07,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:43:07,642 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:07,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:07,642 INFO L82 PathProgramCache]: Analyzing trace with hash -808373601, now seen corresponding path program 1 times [2020-10-12 11:43:07,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:07,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577104645] [2020-10-12 11:43:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:08,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:12,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:12,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 880 [2020-10-12 11:43:12,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:43:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 11:43:12,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 11:43:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:43:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 874 [2020-10-12 11:43:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:13,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:13,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:13,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:43:13,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:43:13,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:13,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:13,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:13,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:13,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:13,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 11:43:13,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:43:13,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:13,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:13,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:13,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:13,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:43:13,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:43:13,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:43:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 11:43:14,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577104645] [2020-10-12 11:43:14,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:14,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:43:14,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228585305] [2020-10-12 11:43:14,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:43:14,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:14,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:43:14,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:43:14,355 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 7 states. [2020-10-12 11:43:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:27,370 INFO L93 Difference]: Finished difference Result 6540 states and 9643 transitions. [2020-10-12 11:43:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:43:27,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 862 [2020-10-12 11:43:27,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:27,394 INFO L225 Difference]: With dead ends: 6540 [2020-10-12 11:43:27,394 INFO L226 Difference]: Without dead ends: 4487 [2020-10-12 11:43:27,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:43:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2020-10-12 11:43:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4476. [2020-10-12 11:43:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4476 states. [2020-10-12 11:43:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 6122 transitions. [2020-10-12 11:43:27,509 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 6122 transitions. Word has length 862 [2020-10-12 11:43:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:27,511 INFO L479 AbstractCegarLoop]: Abstraction has 4476 states and 6122 transitions. [2020-10-12 11:43:27,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:43:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 6122 transitions. [2020-10-12 11:43:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-10-12 11:43:27,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:27,530 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-12 11:43:27,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:43:27,530 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:27,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1734493872, now seen corresponding path program 1 times [2020-10-12 11:43:27,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:27,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787945991] [2020-10-12 11:43:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:27,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:28,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:32,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:32,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 897 [2020-10-12 11:43:32,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:43:32,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 11:43:32,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:43:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 11:43:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 831 [2020-10-12 11:43:32,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:33,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:33,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:33,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:43:33,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:33,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:33,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:33,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:33,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:33,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:43:33,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:33,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:33,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:33,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:43:33,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:43:33,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:43:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:33,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:33,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:33,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:43:33,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:43:33,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:43:33,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-12 11:43:33,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787945991] [2020-10-12 11:43:33,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:33,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:43:33,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985841748] [2020-10-12 11:43:33,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:43:33,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:33,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:43:33,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:43:33,781 INFO L87 Difference]: Start difference. First operand 4476 states and 6122 transitions. Second operand 5 states. [2020-10-12 11:43:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:42,997 INFO L93 Difference]: Finished difference Result 10776 states and 15799 transitions. [2020-10-12 11:43:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:43:43,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 877 [2020-10-12 11:43:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:43,033 INFO L225 Difference]: With dead ends: 10776 [2020-10-12 11:43:43,033 INFO L226 Difference]: Without dead ends: 7033 [2020-10-12 11:43:43,043 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 11:43:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2020-10-12 11:43:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 7013. [2020-10-12 11:43:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7013 states. [2020-10-12 11:43:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7013 states to 7013 states and 9736 transitions. [2020-10-12 11:43:43,231 INFO L78 Accepts]: Start accepts. Automaton has 7013 states and 9736 transitions. Word has length 877 [2020-10-12 11:43:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:43,233 INFO L479 AbstractCegarLoop]: Abstraction has 7013 states and 9736 transitions. [2020-10-12 11:43:43,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:43:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 7013 states and 9736 transitions. [2020-10-12 11:43:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2020-10-12 11:43:43,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:43,265 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:43,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:43:43,266 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:43,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:43,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1131395078, now seen corresponding path program 1 times [2020-10-12 11:43:43,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:43,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290821582] [2020-10-12 11:43:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:43,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:48,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:48,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 948 [2020-10-12 11:43:48,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:43:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 11:43:48,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:43:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:43:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 11:43:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:48,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:48,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:48,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:48,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:43:48,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:48,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:48,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:48,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:43:48,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:48,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:48,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:48,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:48,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:43:48,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:43:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:48,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:48,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:48,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:48,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:43:48,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:43:48,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:43:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:43:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:48,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:48,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 11:43:48,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 11:43:48,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 11:43:48,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 95 proven. 38 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 11:43:49,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290821582] [2020-10-12 11:43:49,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:49,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:43:49,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624879468] [2020-10-12 11:43:49,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:43:49,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:49,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:43:49,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:43:49,262 INFO L87 Difference]: Start difference. First operand 7013 states and 9736 transitions. Second operand 9 states. [2020-10-12 11:43:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:59,570 INFO L93 Difference]: Finished difference Result 13417 states and 18959 transitions. [2020-10-12 11:43:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:43:59,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 928 [2020-10-12 11:43:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:59,615 INFO L225 Difference]: With dead ends: 13417 [2020-10-12 11:43:59,616 INFO L226 Difference]: Without dead ends: 7137 [2020-10-12 11:43:59,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:43:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7137 states. [2020-10-12 11:43:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7137 to 7068. [2020-10-12 11:43:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2020-10-12 11:43:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 8792 transitions. [2020-10-12 11:43:59,799 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 8792 transitions. Word has length 928 [2020-10-12 11:43:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:59,799 INFO L479 AbstractCegarLoop]: Abstraction has 7068 states and 8792 transitions. [2020-10-12 11:43:59,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:43:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 8792 transitions. [2020-10-12 11:43:59,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2020-10-12 11:43:59,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:59,826 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:59,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:43:59,827 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:59,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1792368004, now seen corresponding path program 1 times [2020-10-12 11:43:59,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:59,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194133005] [2020-10-12 11:43:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:04,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:04,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 955 [2020-10-12 11:44:04,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:44:04,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-12 11:44:04,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:04,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:44:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-12 11:44:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 11:44:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:08,181 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2020-10-12 11:44:08,395 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 38 [2020-10-12 11:44:08,588 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 38 [2020-10-12 11:44:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:44:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:09,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:09,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:44:09,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:09,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:44:09,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:09,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:44:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:44:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:09,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:09,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:09,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:44:09,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:09,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:44:09,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:09,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:09,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:44:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:09,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:09,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:09,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:44:09,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:44:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:09,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:44:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:09,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:09,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 11:44:09,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:09,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 11:44:09,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:44:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 11:44:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 103 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:44:14,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194133005] [2020-10-12 11:44:14,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:44:14,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:44:14,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303357321] [2020-10-12 11:44:14,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:44:14,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:44:14,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:44:14,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:44:14,179 INFO L87 Difference]: Start difference. First operand 7068 states and 8792 transitions. Second operand 19 states. [2020-10-12 11:44:15,038 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 11:44:20,047 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:44:23,771 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:44:24,670 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:44:26,155 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2020-10-12 11:44:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:44:31,276 INFO L93 Difference]: Finished difference Result 14190 states and 17961 transitions. [2020-10-12 11:44:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:44:31,283 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 935 [2020-10-12 11:44:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:44:31,305 INFO L225 Difference]: With dead ends: 14190 [2020-10-12 11:44:31,306 INFO L226 Difference]: Without dead ends: 7855 [2020-10-12 11:44:31,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:44:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2020-10-12 11:44:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7828. [2020-10-12 11:44:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7828 states. [2020-10-12 11:44:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7828 states to 7828 states and 9565 transitions. [2020-10-12 11:44:31,464 INFO L78 Accepts]: Start accepts. Automaton has 7828 states and 9565 transitions. Word has length 935 [2020-10-12 11:44:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:44:31,465 INFO L479 AbstractCegarLoop]: Abstraction has 7828 states and 9565 transitions. [2020-10-12 11:44:31,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:44:31,465 INFO L276 IsEmpty]: Start isEmpty. Operand 7828 states and 9565 transitions. [2020-10-12 11:44:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2020-10-12 11:44:31,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:44:31,491 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:31,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:44:31,492 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:44:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:44:31,492 INFO L82 PathProgramCache]: Analyzing trace with hash 869915882, now seen corresponding path program 1 times [2020-10-12 11:44:31,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:44:31,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294709588] [2020-10-12 11:44:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:44:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:31,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:36,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:36,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 956 [2020-10-12 11:44:36,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:44:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 11:44:36,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:44:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-12 11:44:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 593 [2020-10-12 11:44:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:38,561 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-12 11:44:38,800 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-10-12 11:44:39,074 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2020-10-12 11:44:39,417 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2020-10-12 11:44:39,752 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 52 [2020-10-12 11:44:40,067 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 48 [2020-10-12 11:44:40,379 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 44 [2020-10-12 11:44:40,570 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 35 [2020-10-12 11:44:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:44:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:41,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:41,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:41,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:44:41,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:41,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:44:41,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:41,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:41,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:44:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:41,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:41,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:41,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:44:41,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:41,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:44:41,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:41,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:44:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:41,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:41,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:44:41,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:41,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:44:41,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:44:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:41,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:41,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 11:44:41,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:41,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 11:44:41,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:44:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 11:44:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 104 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:44:46,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294709588] [2020-10-12 11:44:46,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:44:46,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:44:46,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880658154] [2020-10-12 11:44:46,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:44:46,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:44:46,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:44:46,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:44:46,566 INFO L87 Difference]: Start difference. First operand 7828 states and 9565 transitions. Second operand 17 states. [2020-10-12 11:44:48,188 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-12 11:44:48,424 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:44:49,105 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-10-12 11:44:49,961 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-10-12 11:44:51,475 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-10-12 11:44:53,712 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-12 11:44:54,768 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-12 11:44:57,409 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:44:57,579 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-12 11:45:04,723 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:45:04,899 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:45:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:45:12,596 INFO L93 Difference]: Finished difference Result 15536 states and 19264 transitions. [2020-10-12 11:45:12,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:45:12,598 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 936 [2020-10-12 11:45:12,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:45:12,618 INFO L225 Difference]: With dead ends: 15536 [2020-10-12 11:45:12,619 INFO L226 Difference]: Without dead ends: 8441 [2020-10-12 11:45:12,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:45:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2020-10-12 11:45:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 8422. [2020-10-12 11:45:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8422 states. [2020-10-12 11:45:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 10170 transitions. [2020-10-12 11:45:12,772 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 10170 transitions. Word has length 936 [2020-10-12 11:45:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:45:12,773 INFO L479 AbstractCegarLoop]: Abstraction has 8422 states and 10170 transitions. [2020-10-12 11:45:12,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:45:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 10170 transitions. [2020-10-12 11:45:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-12 11:45:12,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:45:12,802 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:12,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:45:12,802 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:45:12,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:45:12,803 INFO L82 PathProgramCache]: Analyzing trace with hash 767941861, now seen corresponding path program 1 times [2020-10-12 11:45:12,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:45:12,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876817730] [2020-10-12 11:45:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:45:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:12,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking...