/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:54:33,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:54:33,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:54:33,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:54:33,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:54:33,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:54:33,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:54:33,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:54:33,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:54:33,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:54:33,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:54:33,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:54:33,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:54:33,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:54:33,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:54:33,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:54:33,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:54:33,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:54:33,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:54:33,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:54:33,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:54:33,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:54:33,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:54:33,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:54:33,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:54:33,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:54:33,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:54:33,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:54:33,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:54:33,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:54:33,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:54:33,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:54:33,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:54:33,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:54:33,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:54:33,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:54:33,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:54:33,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:54:33,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:54:33,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:54:33,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:54:33,815 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 [2020-09-25 07:54:33,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:54:33,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:54:33,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:54:33,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:54:33,850 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:54:33,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:54:33,850 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:54:33,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:54:33,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:54:33,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:54:33,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:54:33,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:54:33,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:54:33,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:54:33,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:54:33,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:54:33,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:54:33,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:54:33,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:54:33,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:54:33,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:54:33,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:54:33,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:54:33,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:54:33,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:54:33,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:54:33,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:54:33,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:54:33,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:54:33,857 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:54:34,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:54:34,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:54:34,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:54:34,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:54:34,352 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:54:34,353 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 07:54:34,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/288b2ab91/6bec0f8ef66f45159556c1d3d8da1000/FLAG5d916ffd3 [2020-09-25 07:54:35,138 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:54:35,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 07:54:35,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/288b2ab91/6bec0f8ef66f45159556c1d3d8da1000/FLAG5d916ffd3 [2020-09-25 07:54:35,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/288b2ab91/6bec0f8ef66f45159556c1d3d8da1000 [2020-09-25 07:54:35,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:54:35,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:54:35,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:35,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:54:35,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:54:35,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:35" (1/1) ... [2020-09-25 07:54:35,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:35, skipping insertion in model container [2020-09-25 07:54:35,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:35" (1/1) ... [2020-09-25 07:54:35,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:54:35,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:54:35,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:35,928 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:54:36,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:36,147 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:54:36,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36 WrapperNode [2020-09-25 07:54:36,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:36,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:54:36,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:54:36,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:54:36,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36" (1/1) ... [2020-09-25 07:54:36,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36" (1/1) ... [2020-09-25 07:54:36,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36" (1/1) ... [2020-09-25 07:54:36,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36" (1/1) ... [2020-09-25 07:54:36,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36" (1/1) ... [2020-09-25 07:54:36,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36" (1/1) ... [2020-09-25 07:54:36,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36" (1/1) ... [2020-09-25 07:54:36,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:54:36,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:54:36,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:54:36,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:54:36,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36" (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 [2020-09-25 07:54:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:54:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:54:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:54:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:54:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:54:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:54:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:54:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:54:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:54:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:54:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:54:37,687 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:54:37,687 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:54:37,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:37 BoogieIcfgContainer [2020-09-25 07:54:37,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:54:37,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:54:37,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:54:37,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:54:37,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:54:35" (1/3) ... [2020-09-25 07:54:37,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:37, skipping insertion in model container [2020-09-25 07:54:37,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:36" (2/3) ... [2020-09-25 07:54:37,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:37, skipping insertion in model container [2020-09-25 07:54:37,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:37" (3/3) ... [2020-09-25 07:54:37,714 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-09-25 07:54:37,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:54:37,740 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:54:37,764 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:54:37,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:54:37,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:54:37,802 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:54:37,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:54:37,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:54:37,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:54:37,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:54:37,803 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:54:37,840 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:54:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 07:54:37,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:37,879 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] [2020-09-25 07:54:37,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:37,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:37,888 INFO L82 PathProgramCache]: Analyzing trace with hash -551630175, now seen corresponding path program 1 times [2020-09-25 07:54:37,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:37,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 07:54:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:39,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:41,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:41,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:43,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 07:54:43,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:54:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 07:54:43,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:43,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:54:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 07:54:43,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:54:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:43,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:43,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:43,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:43,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:54:43,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:43,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:54:43,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:54:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:43,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 07:54:43,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:54:43,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:54:43,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780031820] [2020-09-25 07:54:43,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:43,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:43,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:43,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:43,626 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 07:54:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:46,573 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 07:54:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:54:46,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 07:54:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:46,603 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 07:54:46,604 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 07:54:46,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:54:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 07:54:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 07:54:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 07:54:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 07:54:46,762 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 126 [2020-09-25 07:54:46,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:46,764 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 07:54:46,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:46,764 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 07:54:46,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 07:54:46,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:46,777 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:54:46,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:54:46,777 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:46,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:46,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2026408437, now seen corresponding path program 1 times [2020-09-25 07:54:46,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:46,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136027263] [2020-09-25 07:54:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:46,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:46,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:47,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:51,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:51,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 07:54:51,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:54:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 07:54:51,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:51,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:54:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 07:54:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:52,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:52,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:52,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:52,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:54:52,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:52,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:52,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:52,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:52,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:52,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:54:52,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:52,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:54:52,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:52,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:54:52,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:52,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:52,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136027263] [2020-09-25 07:54:52,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:52,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:54:52,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387883541] [2020-09-25 07:54:52,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:52,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:52,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:52,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:52,142 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 07:54:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:54,454 INFO L93 Difference]: Finished difference Result 2247 states and 2909 transitions. [2020-09-25 07:54:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:54:54,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 07:54:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:54,465 INFO L225 Difference]: With dead ends: 2247 [2020-09-25 07:54:54,465 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 07:54:54,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:54:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 07:54:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1336. [2020-09-25 07:54:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-09-25 07:54:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1631 transitions. [2020-09-25 07:54:54,526 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1631 transitions. Word has length 144 [2020-09-25 07:54:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:54,527 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1631 transitions. [2020-09-25 07:54:54,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1631 transitions. [2020-09-25 07:54:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 07:54:54,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:54,532 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:54:54,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:54:54,533 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:54,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:54,533 INFO L82 PathProgramCache]: Analyzing trace with hash -149723680, now seen corresponding path program 1 times [2020-09-25 07:54:54,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:54,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75611127] [2020-09-25 07:54:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:54,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:59,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:59,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 07:54:59,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:54:59,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:54:59,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:59,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:54:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 07:54:59,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:59,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:59,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:59,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:59,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:54:59,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:59,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:59,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:59,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:59,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:59,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:54:59,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:54:59,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:59,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:59,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:59,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:59,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:54:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:59,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75611127] [2020-09-25 07:54:59,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:59,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:54:59,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847762948] [2020-09-25 07:54:59,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:59,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:59,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:59,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:59,778 INFO L87 Difference]: Start difference. First operand 1336 states and 1631 transitions. Second operand 5 states. [2020-09-25 07:55:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:01,890 INFO L93 Difference]: Finished difference Result 3603 states and 4612 transitions. [2020-09-25 07:55:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:01,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 07:55:01,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:01,907 INFO L225 Difference]: With dead ends: 3603 [2020-09-25 07:55:01,908 INFO L226 Difference]: Without dead ends: 2289 [2020-09-25 07:55:01,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:01,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-25 07:55:02,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2249. [2020-09-25 07:55:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-09-25 07:55:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2723 transitions. [2020-09-25 07:55:02,017 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2723 transitions. Word has length 150 [2020-09-25 07:55:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:02,018 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2723 transitions. [2020-09-25 07:55:02,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2723 transitions. [2020-09-25 07:55:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 07:55:02,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:02,030 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, 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] [2020-09-25 07:55:02,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:02,030 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:02,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:02,031 INFO L82 PathProgramCache]: Analyzing trace with hash 537580245, now seen corresponding path program 1 times [2020-09-25 07:55:02,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:02,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567849534] [2020-09-25 07:55:02,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:02,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 07:55:07,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:55:07,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:55:07,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 07:55:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 07:55:07,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:07,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:07,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:55:07,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 07:55:07,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:55:07,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:07,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567849534] [2020-09-25 07:55:07,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:07,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:07,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553254823] [2020-09-25 07:55:07,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:07,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:07,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:07,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:07,367 INFO L87 Difference]: Start difference. First operand 2249 states and 2723 transitions. Second operand 5 states. [2020-09-25 07:55:09,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:09,492 INFO L93 Difference]: Finished difference Result 5438 states and 6872 transitions. [2020-09-25 07:55:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:09,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 07:55:09,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:09,512 INFO L225 Difference]: With dead ends: 5438 [2020-09-25 07:55:09,513 INFO L226 Difference]: Without dead ends: 3211 [2020-09-25 07:55:09,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2020-09-25 07:55:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 3011. [2020-09-25 07:55:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3011 states. [2020-09-25 07:55:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3640 transitions. [2020-09-25 07:55:09,632 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3640 transitions. Word has length 161 [2020-09-25 07:55:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:09,633 INFO L479 AbstractCegarLoop]: Abstraction has 3011 states and 3640 transitions. [2020-09-25 07:55:09,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3640 transitions. [2020-09-25 07:55:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 07:55:09,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:09,645 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:55:09,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:09,646 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:09,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1033135550, now seen corresponding path program 1 times [2020-09-25 07:55:09,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:09,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462389320] [2020-09-25 07:55:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:11,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 07:55:14,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:55:14,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:14,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:55:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:55:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:14,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:14,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:14,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:14,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:14,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:14,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:14,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:14,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:14,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:14,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:14,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:14,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:14,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:14,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:55:14,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:55:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:14,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:55:14,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:14,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:55:14,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:14,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:55:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:55:14,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462389320] [2020-09-25 07:55:14,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:14,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:55:14,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754393955] [2020-09-25 07:55:14,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:14,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:14,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:14,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:14,955 INFO L87 Difference]: Start difference. First operand 3011 states and 3640 transitions. Second operand 7 states. [2020-09-25 07:55:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:17,258 INFO L93 Difference]: Finished difference Result 7308 states and 9243 transitions. [2020-09-25 07:55:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:17,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 07:55:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:17,285 INFO L225 Difference]: With dead ends: 7308 [2020-09-25 07:55:17,285 INFO L226 Difference]: Without dead ends: 4319 [2020-09-25 07:55:17,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2020-09-25 07:55:17,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 3624. [2020-09-25 07:55:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3624 states. [2020-09-25 07:55:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 4401 transitions. [2020-09-25 07:55:17,424 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 4401 transitions. Word has length 163 [2020-09-25 07:55:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:17,425 INFO L479 AbstractCegarLoop]: Abstraction has 3624 states and 4401 transitions. [2020-09-25 07:55:17,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 4401 transitions. [2020-09-25 07:55:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 07:55:17,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:17,437 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, 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] [2020-09-25 07:55:17,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:55:17,437 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:17,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1209881623, now seen corresponding path program 1 times [2020-09-25 07:55:17,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:17,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633675160] [2020-09-25 07:55:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:18,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:22,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 07:55:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:55:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 07:55:22,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:22,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 07:55:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 07:55:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:22,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:22,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:22,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:22,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:22,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:22,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:22,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:22,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:22,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:55:22,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:22,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:55:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:22,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633675160] [2020-09-25 07:55:22,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:22,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:22,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140516330] [2020-09-25 07:55:22,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:22,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:22,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:22,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:22,724 INFO L87 Difference]: Start difference. First operand 3624 states and 4401 transitions. Second operand 5 states.