/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem13_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:21:23,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:21:23,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:21:23,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:21:23,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:21:23,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:21:23,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:21:23,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:21:23,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:21:23,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:21:23,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:21:23,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:21:23,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:21:23,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:21:23,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:21:23,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:21:23,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:21:23,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:21:23,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:21:23,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:21:23,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:21:23,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:21:23,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:21:23,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:21:23,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:21:23,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:21:23,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:21:23,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:21:23,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:21:23,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:21:23,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:21:23,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:21:23,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:21:23,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:21:23,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:21:23,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:21:23,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:21:23,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:21:23,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:21:23,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:21:23,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:21:23,827 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 [2020-10-14 21:21:23,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:21:23,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:21:23,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:21:23,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:21:23,874 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:21:23,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:21:23,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:21:23,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:21:23,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:21:23,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:21:23,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:21:23,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:21:23,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:21:23,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:21:23,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:21:23,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:21:23,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:21:23,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:21:23,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:21:23,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:21:23,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:21:23,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:21:23,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:21:23,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:21:23,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:21:23,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:21:23,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:21:23,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:21:23,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:21:23,880 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:21:24,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:21:24,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:21:24,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:21:24,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:21:24,275 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:21:24,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2020-10-14 21:21:24,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29a2245ed/4aed85e9a3134e399c06543c61aeec05/FLAG18bdaf211 [2020-10-14 21:21:25,328 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:21:25,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2020-10-14 21:21:25,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29a2245ed/4aed85e9a3134e399c06543c61aeec05/FLAG18bdaf211 [2020-10-14 21:21:25,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29a2245ed/4aed85e9a3134e399c06543c61aeec05 [2020-10-14 21:21:25,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:21:25,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:21:25,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:21:25,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:21:25,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:21:25,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:21:25" (1/1) ... [2020-10-14 21:21:25,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cd098f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:25, skipping insertion in model container [2020-10-14 21:21:25,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:21:25" (1/1) ... [2020-10-14 21:21:25,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:21:26,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:21:27,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:21:27,820 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:21:28,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:21:28,817 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:21:28,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28 WrapperNode [2020-10-14 21:21:28,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:21:28,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:21:28,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:21:28,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:21:28,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28" (1/1) ... [2020-10-14 21:21:28,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28" (1/1) ... [2020-10-14 21:21:28,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28" (1/1) ... [2020-10-14 21:21:28,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28" (1/1) ... [2020-10-14 21:21:29,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28" (1/1) ... [2020-10-14 21:21:29,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28" (1/1) ... [2020-10-14 21:21:29,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28" (1/1) ... [2020-10-14 21:21:29,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:21:29,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:21:29,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:21:29,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:21:29,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28" (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 [2020-10-14 21:21:29,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:21:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:21:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:21:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:21:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:21:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:21:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:21:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:21:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:21:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:21:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:21:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:21:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:21:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:21:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:21:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:21:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:21:41,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:21:41,928 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:21:41,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:41 BoogieIcfgContainer [2020-10-14 21:21:41,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:21:41,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:21:41,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:21:41,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:21:41,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:21:25" (1/3) ... [2020-10-14 21:21:41,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d33e0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:41, skipping insertion in model container [2020-10-14 21:21:41,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28" (2/3) ... [2020-10-14 21:21:41,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d33e0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:41, skipping insertion in model container [2020-10-14 21:21:41,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:41" (3/3) ... [2020-10-14 21:21:41,957 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label00.c [2020-10-14 21:21:41,974 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:21:41,988 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:21:42,006 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:21:42,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:21:42,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:21:42,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:21:42,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:21:42,044 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:21:42,044 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:21:42,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:21:42,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:21:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:21:42,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 21:21:42,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:42,104 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] [2020-10-14 21:21:42,105 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:42,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:42,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1468067560, now seen corresponding path program 1 times [2020-10-14 21:21:42,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:42,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424061960] [2020-10-14 21:21:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:42,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:42,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 21:21:42,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-14 21:21:42,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:42,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:21:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:21:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 21:21:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:21:43,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:43,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:43,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:43,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 21:21:43,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:43,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:21:43,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:21:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:21:43,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424061960] [2020-10-14 21:21:43,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:21:43,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:21:43,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503828139] [2020-10-14 21:21:43,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:21:43,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:21:43,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:21:43,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:21:43,137 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 21:22:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:00,345 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-14 21:22:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:22:00,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-14 21:22:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:00,407 INFO L225 Difference]: With dead ends: 4080 [2020-10-14 21:22:00,407 INFO L226 Difference]: Without dead ends: 2872 [2020-10-14 21:22:00,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-14 21:22:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-14 21:22:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-14 21:22:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-14 21:22:00,594 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 43 [2020-10-14 21:22:00,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:00,596 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-14 21:22:00,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:22:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-14 21:22:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 21:22:00,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:00,604 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, 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] [2020-10-14 21:22:00,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:22:00,605 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:00,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:00,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1326876525, now seen corresponding path program 1 times [2020-10-14 21:22:00,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:00,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879398015] [2020-10-14 21:22:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:01,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:02,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:02,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 21:22:02,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:22:02,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-14 21:22:02,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:02,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:02,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:22:02,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:22:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:22:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:02,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:02,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:02,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:22:02,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:02,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:02,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:02,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:22:02,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:02,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 21:22:02,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:02,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:02,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:22:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:22:02,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879398015] [2020-10-14 21:22:02,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:22:02,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:22:02,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032478533] [2020-10-14 21:22:02,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:22:02,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:02,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:22:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:02,992 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 7 states. [2020-10-14 21:22:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:21,305 INFO L93 Difference]: Finished difference Result 5644 states and 9368 transitions. [2020-10-14 21:22:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:22:21,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-14 21:22:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:21,333 INFO L225 Difference]: With dead ends: 5644 [2020-10-14 21:22:21,333 INFO L226 Difference]: Without dead ends: 3716 [2020-10-14 21:22:21,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:22:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2020-10-14 21:22:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3606. [2020-10-14 21:22:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3606 states. [2020-10-14 21:22:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 5131 transitions. [2020-10-14 21:22:21,479 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 5131 transitions. Word has length 118 [2020-10-14 21:22:21,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:21,482 INFO L479 AbstractCegarLoop]: Abstraction has 3606 states and 5131 transitions. [2020-10-14 21:22:21,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:22:21,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 5131 transitions. [2020-10-14 21:22:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 21:22:21,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:21,495 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, 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] [2020-10-14 21:22:21,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:22:21,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:21,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:21,498 INFO L82 PathProgramCache]: Analyzing trace with hash 165717033, now seen corresponding path program 1 times [2020-10-14 21:22:21,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:21,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74889300] [2020-10-14 21:22:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:21,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:22,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 21:22:22,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:22:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-14 21:22:22,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:22,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:22:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:22:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:22,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:22,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:22,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:22,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:22,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:22:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:22,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:22,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:22,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:22,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:22,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:22:22,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 21:22:22,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:22,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:22:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:22:22,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74889300] [2020-10-14 21:22:22,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:22:22,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:22:22,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981800383] [2020-10-14 21:22:22,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:22:22,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:22,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:22:22,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:22,927 INFO L87 Difference]: Start difference. First operand 3606 states and 5131 transitions. Second operand 7 states. [2020-10-14 21:22:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:42,116 INFO L93 Difference]: Finished difference Result 10722 states and 15492 transitions. [2020-10-14 21:22:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:22:42,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-10-14 21:22:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:42,155 INFO L225 Difference]: With dead ends: 10722 [2020-10-14 21:22:42,156 INFO L226 Difference]: Without dead ends: 7122 [2020-10-14 21:22:42,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:22:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2020-10-14 21:22:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 6994. [2020-10-14 21:22:42,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6994 states. [2020-10-14 21:22:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 9018 transitions. [2020-10-14 21:22:42,360 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 9018 transitions. Word has length 148 [2020-10-14 21:22:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:42,368 INFO L479 AbstractCegarLoop]: Abstraction has 6994 states and 9018 transitions. [2020-10-14 21:22:42,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:22:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 9018 transitions. [2020-10-14 21:22:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 21:22:42,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:42,374 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, 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] [2020-10-14 21:22:42,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:22:42,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:42,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1222328544, now seen corresponding path program 1 times [2020-10-14 21:22:42,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:42,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854309923] [2020-10-14 21:22:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:42,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:42,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:42,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 21:22:42,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:42,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 21:22:42,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:42,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:42,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:22:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 21:22:42,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:22:43,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:43,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:43,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:22:43,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:43,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:43,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:43,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:22:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 21:22:43,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:43,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:22:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:22:43,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854309923] [2020-10-14 21:22:43,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:22:43,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:22:43,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246890715] [2020-10-14 21:22:43,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:22:43,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:43,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:22:43,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:22:43,437 INFO L87 Difference]: Start difference. First operand 6994 states and 9018 transitions. Second operand 5 states. [2020-10-14 21:23:09,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:09,456 INFO L93 Difference]: Finished difference Result 17339 states and 23389 transitions. [2020-10-14 21:23:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:23:09,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 21:23:09,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:09,505 INFO L225 Difference]: With dead ends: 17339 [2020-10-14 21:23:09,505 INFO L226 Difference]: Without dead ends: 11154 [2020-10-14 21:23:09,521 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 [2020-10-14 21:23:09,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2020-10-14 21:23:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 11092. [2020-10-14 21:23:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11092 states. [2020-10-14 21:23:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11092 states to 11092 states and 14213 transitions. [2020-10-14 21:23:09,777 INFO L78 Accepts]: Start accepts. Automaton has 11092 states and 14213 transitions. Word has length 172 [2020-10-14 21:23:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:09,779 INFO L479 AbstractCegarLoop]: Abstraction has 11092 states and 14213 transitions. [2020-10-14 21:23:09,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:23:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 11092 states and 14213 transitions. [2020-10-14 21:23:09,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 21:23:09,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:09,784 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, 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] [2020-10-14 21:23:09,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:23:09,785 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:09,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:09,786 INFO L82 PathProgramCache]: Analyzing trace with hash -464058944, now seen corresponding path program 1 times [2020-10-14 21:23:09,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:09,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595286624] [2020-10-14 21:23:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:10,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:10,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 21:23:10,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-14 21:23:10,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:10,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:23:10,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:10,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:10,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:10,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:10,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:10,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:10,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:23:10,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:10,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:23:10,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:10,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:10,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 21:23:10,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 21:23:10,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:10,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 21:23:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:23:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:11,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595286624] [2020-10-14 21:23:11,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:11,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:11,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056875730] [2020-10-14 21:23:11,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:11,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:11,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:11,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:11,572 INFO L87 Difference]: Start difference. First operand 11092 states and 14213 transitions. Second operand 7 states. [2020-10-14 21:23:31,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:31,981 INFO L93 Difference]: Finished difference Result 29173 states and 39496 transitions. [2020-10-14 21:23:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:23:31,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-14 21:23:31,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:32,063 INFO L225 Difference]: With dead ends: 29173 [2020-10-14 21:23:32,063 INFO L226 Difference]: Without dead ends: 18890 [2020-10-14 21:23:32,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:23:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18890 states. [2020-10-14 21:23:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18890 to 17960. [2020-10-14 21:23:33,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17960 states. [2020-10-14 21:23:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17960 states to 17960 states and 22927 transitions. [2020-10-14 21:23:33,319 INFO L78 Accepts]: Start accepts. Automaton has 17960 states and 22927 transitions. Word has length 238 [2020-10-14 21:23:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:33,319 INFO L479 AbstractCegarLoop]: Abstraction has 17960 states and 22927 transitions. [2020-10-14 21:23:33,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:23:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 17960 states and 22927 transitions. [2020-10-14 21:23:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 21:23:33,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:33,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-14 21:23:33,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:23:33,329 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:33,330 INFO L82 PathProgramCache]: Analyzing trace with hash -255056864, now seen corresponding path program 1 times [2020-10-14 21:23:33,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:33,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393037921] [2020-10-14 21:23:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:34,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:37,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:37,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 21:23:37,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:23:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3636 [2020-10-14 21:23:37,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:37,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:23:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:23:37,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:37,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:37,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:37,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:37,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:23:37,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:37,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:23:37,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:37,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:23:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:37,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:37,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:37,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:23:37,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 21:23:37,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:37,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:23:37,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:23:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:37,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:37,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:23:37,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 21:23:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:37,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:23:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:23:37,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393037921] [2020-10-14 21:23:37,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:23:37,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:23:37,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222032025] [2020-10-14 21:23:37,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:23:37,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:37,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:23:37,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:23:37,810 INFO L87 Difference]: Start difference. First operand 17960 states and 22927 transitions. Second operand 8 states. [2020-10-14 21:24:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:20,079 INFO L93 Difference]: Finished difference Result 42887 states and 57452 transitions. [2020-10-14 21:24:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:24:20,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2020-10-14 21:24:20,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:20,185 INFO L225 Difference]: With dead ends: 42887 [2020-10-14 21:24:20,185 INFO L226 Difference]: Without dead ends: 25736 [2020-10-14 21:24:20,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:24:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25736 states. [2020-10-14 21:24:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25736 to 25644. [2020-10-14 21:24:20,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25644 states. [2020-10-14 21:24:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25644 states to 25644 states and 33512 transitions. [2020-10-14 21:24:20,849 INFO L78 Accepts]: Start accepts. Automaton has 25644 states and 33512 transitions. Word has length 241 [2020-10-14 21:24:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:20,851 INFO L479 AbstractCegarLoop]: Abstraction has 25644 states and 33512 transitions. [2020-10-14 21:24:20,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:24:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 25644 states and 33512 transitions. [2020-10-14 21:24:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 21:24:20,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:20,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-14 21:24:20,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:24:20,859 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:20,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1290376880, now seen corresponding path program 1 times [2020-10-14 21:24:20,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:20,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310212285] [2020-10-14 21:24:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:20,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:21,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:21,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 21:24:21,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:21,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-14 21:24:21,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:21,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:24:21,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:24:21,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:21,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:21,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:21,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:21,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:24:21,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:21,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:24:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:24:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:24:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:22,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:22,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:24:22,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:22,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 21:24:22,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:22,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:22,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:22,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:24:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:22,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:24:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:22,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:22,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:22,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:24:22,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 21:24:22,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:22,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:22,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:24:22,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:24:22,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310212285] [2020-10-14 21:24:22,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:24:22,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:24:22,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067933123] [2020-10-14 21:24:22,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:24:22,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:22,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:24:22,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:24:22,537 INFO L87 Difference]: Start difference. First operand 25644 states and 33512 transitions. Second operand 7 states. [2020-10-14 21:25:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:25:14,057 INFO L93 Difference]: Finished difference Result 63190 states and 90009 transitions. [2020-10-14 21:25:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:25:14,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-14 21:25:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:25:14,260 INFO L225 Difference]: With dead ends: 63190 [2020-10-14 21:25:14,260 INFO L226 Difference]: Without dead ends: 38355 [2020-10-14 21:25:14,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:25:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38355 states. [2020-10-14 21:25:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38355 to 37868. [2020-10-14 21:25:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37868 states. [2020-10-14 21:25:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37868 states to 37868 states and 50224 transitions. [2020-10-14 21:25:15,355 INFO L78 Accepts]: Start accepts. Automaton has 37868 states and 50224 transitions. Word has length 248 [2020-10-14 21:25:15,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:25:15,356 INFO L479 AbstractCegarLoop]: Abstraction has 37868 states and 50224 transitions. [2020-10-14 21:25:15,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:25:15,356 INFO L276 IsEmpty]: Start isEmpty. Operand 37868 states and 50224 transitions. [2020-10-14 21:25:15,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 21:25:15,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:15,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-14 21:25:15,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:25:15,363 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:15,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:15,363 INFO L82 PathProgramCache]: Analyzing trace with hash 134636916, now seen corresponding path program 1 times [2020-10-14 21:25:15,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:15,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257071122] [2020-10-14 21:25:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:15,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:15,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:16,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:19,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:19,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 21:25:19,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:25:19,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3981 [2020-10-14 21:25:19,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:19,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:25:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:25:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 21:25:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:25:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:19,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:19,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:19,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:19,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:25:19,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:19,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:25:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:25:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:19,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:25:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:19,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:19,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:25:19,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:19,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 21:25:19,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:19,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:19,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:19,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:19,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:25:19,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:19,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:25:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:20,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:20,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:25:20,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:20,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 21:25:20,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:20,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:25:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:25:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:25:20,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:25:20,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257071122] [2020-10-14 21:25:20,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:25:20,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:25:20,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797641828] [2020-10-14 21:25:20,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:25:20,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:20,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:25:20,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:25:20,200 INFO L87 Difference]: Start difference. First operand 37868 states and 50224 transitions. Second operand 7 states.