/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:38:03,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:38:03,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:38:03,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:38:03,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:38:03,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:38:03,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:38:03,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:38:03,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:38:03,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:38:03,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:38:03,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:38:03,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:38:03,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:38:03,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:38:03,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:38:03,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:38:03,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:38:03,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:38:03,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:38:03,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:38:03,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:38:03,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:38:03,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:38:03,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:38:03,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:38:03,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:38:03,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:38:03,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:38:03,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:38:03,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:38:03,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:38:03,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:38:03,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:38:03,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:38:03,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:38:03,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:38:03,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:38:03,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:38:03,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:38:03,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:38:03,893 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 13:38:03,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:38:03,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:38:03,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:38:03,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:38:03,922 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:38:03,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:38:03,922 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:38:03,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:38:03,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:38:03,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:38:03,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:38:03,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:38:03,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:38:03,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:38:03,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:38:03,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:38:03,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:38:03,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:38:03,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:38:03,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:38:03,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:38:03,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:38:03,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:38:03,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:38:03,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:38:03,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:38:03,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:38:03,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:38:03,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:38:03,927 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:38:04,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:38:04,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:38:04,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:38:04,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:38:04,484 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:38:04,485 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 13:38:04,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0856b9c7/eef033fcc8244c35b66a1d52af172b12/FLAG98c32cc34 [2020-09-25 13:38:05,080 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:38:05,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 13:38:05,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0856b9c7/eef033fcc8244c35b66a1d52af172b12/FLAG98c32cc34 [2020-09-25 13:38:05,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0856b9c7/eef033fcc8244c35b66a1d52af172b12 [2020-09-25 13:38:05,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:38:05,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:38:05,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:38:05,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:38:05,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:38:05,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:38:05" (1/1) ... [2020-09-25 13:38:05,460 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 01:38:05, skipping insertion in model container [2020-09-25 13:38:05,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:38:05" (1/1) ... [2020-09-25 13:38:05,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:38:05,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:38:05,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:38:05,816 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:38:05,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:38:06,005 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:38:06,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06 WrapperNode [2020-09-25 13:38:06,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:38:06,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:38:06,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:38:06,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:38:06,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ... [2020-09-25 13:38:06,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ... [2020-09-25 13:38:06,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ... [2020-09-25 13:38:06,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ... [2020-09-25 13:38:06,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ... [2020-09-25 13:38:06,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ... [2020-09-25 13:38:06,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ... [2020-09-25 13:38:06,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:38:06,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:38:06,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:38:06,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:38:06,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (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 13:38:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:38:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:38:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:38:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-25 13:38:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-25 13:38:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:38:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:38:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:38:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:38:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-25 13:38:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:38:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-25 13:38:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:38:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:38:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:38:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:38:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:38:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:38:06,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:38:06,756 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-25 13:38:06,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:38:06 BoogieIcfgContainer [2020-09-25 13:38:06,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:38:06,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:38:06,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:38:06,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:38:06,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:38:05" (1/3) ... [2020-09-25 13:38:06,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7468d9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:38:06, skipping insertion in model container [2020-09-25 13:38:06,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (2/3) ... [2020-09-25 13:38:06,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7468d9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:38:06, skipping insertion in model container [2020-09-25 13:38:06,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:38:06" (3/3) ... [2020-09-25 13:38:06,782 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-25 13:38:06,794 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:38:06,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:38:06,829 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:38:06,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:38:06,877 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:38:06,877 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:38:06,877 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:38:06,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:38:06,878 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:38:06,878 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:38:06,878 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:38:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-25 13:38:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 13:38:06,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:06,914 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] [2020-09-25 13:38:06,914 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:06,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:06,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-25 13:38:06,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:06,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219148639] [2020-09-25 13:38:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:07,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:07,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:07,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:38:07,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:38:07,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-09-25 13:38:07,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:07,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:38:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:38:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:38:07,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:38:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:07,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:07,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:07,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:07,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:38:07,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:07,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:07,741 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 13:38:07,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219148639] [2020-09-25 13:38:07,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:38:07,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:38:07,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203083816] [2020-09-25 13:38:07,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:38:07,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:07,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:38:07,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:38:07,774 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 5 states. [2020-09-25 13:38:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:38:08,305 INFO L93 Difference]: Finished difference Result 266 states and 324 transitions. [2020-09-25 13:38:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:38:08,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-09-25 13:38:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:38:08,322 INFO L225 Difference]: With dead ends: 266 [2020-09-25 13:38:08,322 INFO L226 Difference]: Without dead ends: 135 [2020-09-25 13:38:08,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:38:08,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-25 13:38:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-09-25 13:38:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 13:38:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2020-09-25 13:38:08,398 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 23 [2020-09-25 13:38:08,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:38:08,399 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2020-09-25 13:38:08,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:38:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2020-09-25 13:38:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 13:38:08,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:08,404 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] [2020-09-25 13:38:08,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:38:08,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash 23578911, now seen corresponding path program 1 times [2020-09-25 13:38:08,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:08,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479995136] [2020-09-25 13:38:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:08,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:08,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:13,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:13,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 13:38:13,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:38:13,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:38:13,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:13,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:38:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:38:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:38:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:38:13,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:13,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:13,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:13,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:13,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:38:13,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:13,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:13,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 13:38:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 13:38:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:13,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:13,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:13,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:13,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:38:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:38:13,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:13,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:38:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:38:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:13,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:38:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:13,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:13,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:13,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 13:38:13,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:13,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:38:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:38:13,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:13,778 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 13:38:13,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479995136] [2020-09-25 13:38:13,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:38:13,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:38:13,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170066253] [2020-09-25 13:38:13,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:38:13,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:13,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:38:13,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:38:13,784 INFO L87 Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 11 states. [2020-09-25 13:38:14,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:38:14,991 INFO L93 Difference]: Finished difference Result 341 states and 389 transitions. [2020-09-25 13:38:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 13:38:14,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 13:38:14,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:38:15,003 INFO L225 Difference]: With dead ends: 341 [2020-09-25 13:38:15,004 INFO L226 Difference]: Without dead ends: 263 [2020-09-25 13:38:15,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:38:15,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-25 13:38:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 162. [2020-09-25 13:38:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 13:38:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 182 transitions. [2020-09-25 13:38:15,056 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 182 transitions. Word has length 59 [2020-09-25 13:38:15,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:38:15,057 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 182 transitions. [2020-09-25 13:38:15,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:38:15,057 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 182 transitions. [2020-09-25 13:38:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 13:38:15,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:15,062 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:38:15,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:38:15,062 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:15,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:15,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1272166002, now seen corresponding path program 1 times [2020-09-25 13:38:15,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:15,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282206132] [2020-09-25 13:38:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:20,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:20,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:38:20,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:38:20,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:38:20,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:20,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:38:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:38:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 13:38:20,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:20,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:20,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:20,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:20,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:20,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:38:20,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:20,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 13:38:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:20,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:20,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:20,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:20,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:38:20,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:38:20,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:20,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:38:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:38:20,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:20,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:38:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:20,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:20,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:20,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:38:20,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:20,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:38:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:38:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:38:20,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282206132] [2020-09-25 13:38:20,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:38:20,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 13:38:20,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608519008] [2020-09-25 13:38:20,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:38:20,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:20,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:38:20,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:38:20,294 INFO L87 Difference]: Start difference. First operand 162 states and 182 transitions. Second operand 12 states. [2020-09-25 13:38:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:38:21,047 INFO L93 Difference]: Finished difference Result 317 states and 358 transitions. [2020-09-25 13:38:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:38:21,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-09-25 13:38:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:38:21,050 INFO L225 Difference]: With dead ends: 317 [2020-09-25 13:38:21,050 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 13:38:21,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-25 13:38:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 13:38:21,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 152. [2020-09-25 13:38:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 13:38:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-09-25 13:38:21,066 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 65 [2020-09-25 13:38:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:38:21,066 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-09-25 13:38:21,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:38:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-09-25 13:38:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:38:21,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:21,069 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:38:21,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:38:21,070 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:21,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:21,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1668970121, now seen corresponding path program 1 times [2020-09-25 13:38:21,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:21,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156386054] [2020-09-25 13:38:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:21,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:21,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:26,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:26,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 13:38:26,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:38:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:38:26,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:26,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:38:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 13:38:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:38:26,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:26,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:26,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:26,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:26,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:38:26,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:26,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:26,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 13:38:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:26,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:26,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:26,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:38:26,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:26,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:38:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:38:26,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:26,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:38:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:26,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:26,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:26,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:26,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:38:26,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:26,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:38:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:26,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:38:26,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:38:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:38:26,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156386054] [2020-09-25 13:38:26,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:38:26,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:38:26,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657060832] [2020-09-25 13:38:26,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:38:26,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:26,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:38:26,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:38:26,233 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 7 states. [2020-09-25 13:38:26,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:38:26,599 INFO L93 Difference]: Finished difference Result 382 states and 432 transitions. [2020-09-25 13:38:26,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:38:26,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-09-25 13:38:26,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:38:26,602 INFO L225 Difference]: With dead ends: 382 [2020-09-25 13:38:26,602 INFO L226 Difference]: Without dead ends: 261 [2020-09-25 13:38:26,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:38:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-09-25 13:38:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 178. [2020-09-25 13:38:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 13:38:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2020-09-25 13:38:26,631 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 71 [2020-09-25 13:38:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:38:26,631 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2020-09-25 13:38:26,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:38:26,632 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2020-09-25 13:38:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 13:38:26,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:26,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:26,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:38:26,640 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:26,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:26,641 INFO L82 PathProgramCache]: Analyzing trace with hash 112590486, now seen corresponding path program 1 times [2020-09-25 13:38:26,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:26,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094310905] [2020-09-25 13:38:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:26,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:26,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:26,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:31,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:31,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 13:38:31,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:38:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:38:31,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:31,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:38:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 13:38:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:38:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:31,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:31,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:31,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:31,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:31,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:38:31,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:31,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:31,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:31,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:31,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:38:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:31,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:31,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:31,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:31,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:38:31,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:31,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:38:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:38:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 13:38:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:31,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:31,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:31,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:38:31,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:31,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:38:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:38:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:38:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:31,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:31,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:31,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:31,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:38:31,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:31,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:38:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:38:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 13:38:31,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094310905] [2020-09-25 13:38:31,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:38:31,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:38:31,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567223040] [2020-09-25 13:38:31,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:38:31,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:31,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:38:31,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:38:31,840 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand 9 states. [2020-09-25 13:38:32,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:38:32,295 INFO L93 Difference]: Finished difference Result 357 states and 404 transitions. [2020-09-25 13:38:32,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:38:32,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-09-25 13:38:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:38:32,298 INFO L225 Difference]: With dead ends: 357 [2020-09-25 13:38:32,298 INFO L226 Difference]: Without dead ends: 332 [2020-09-25 13:38:32,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:38:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-09-25 13:38:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 243. [2020-09-25 13:38:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-25 13:38:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions. [2020-09-25 13:38:32,322 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 99 [2020-09-25 13:38:32,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:38:32,325 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 274 transitions. [2020-09-25 13:38:32,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:38:32,325 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions. [2020-09-25 13:38:32,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 13:38:32,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:32,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:32,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:38:32,332 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:32,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1325819002, now seen corresponding path program 1 times [2020-09-25 13:38:32,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:32,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261275093] [2020-09-25 13:38:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 13:38:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:38:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:38:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:37,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:38:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:38:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 13:38:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:37,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:37,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:38:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:37,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:37,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:38:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:37,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:37,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:37,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:38:37,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:37,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:38:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:38:37,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:37,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:38:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:37,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:37,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:37,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:38:37,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:37,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:38:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:38:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:37,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 13:38:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:37,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:37,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:37,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:38:37,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:37,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:37,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:37,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:38:37,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:37,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 13:38:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:37,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:37,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:37,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:37,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:38:37,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:37,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:38:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:37,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:38:37,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261275093] [2020-09-25 13:38:37,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:38:37,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:38:37,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255370713] [2020-09-25 13:38:37,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:38:37,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:37,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:38:37,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:38:37,563 INFO L87 Difference]: Start difference. First operand 243 states and 274 transitions. Second operand 10 states. [2020-09-25 13:38:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:38:38,179 INFO L93 Difference]: Finished difference Result 406 states and 459 transitions. [2020-09-25 13:38:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:38:38,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-09-25 13:38:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:38:38,186 INFO L225 Difference]: With dead ends: 406 [2020-09-25 13:38:38,187 INFO L226 Difference]: Without dead ends: 257 [2020-09-25 13:38:38,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:38:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-25 13:38:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 245. [2020-09-25 13:38:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-25 13:38:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 273 transitions. [2020-09-25 13:38:38,208 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 273 transitions. Word has length 100 [2020-09-25 13:38:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:38:38,208 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 273 transitions. [2020-09-25 13:38:38,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:38:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 273 transitions. [2020-09-25 13:38:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 13:38:38,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:38,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:38,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:38:38,214 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:38,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:38,214 INFO L82 PathProgramCache]: Analyzing trace with hash 106272181, now seen corresponding path program 1 times [2020-09-25 13:38:38,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:38,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009509291] [2020-09-25 13:38:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:39,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:43,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:43,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 13:38:43,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:38:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:38:43,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:43,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:38:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:38:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:38:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:38:43,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:43,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:43,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:43,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:43,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:38:43,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:43,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:43,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:43,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:38:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:43,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:43,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:43,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:38:43,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:43,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:38:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:38:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:43,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:38:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:43,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:43,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:43,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:38:43,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:43,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:38:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:38:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:43,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:38:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:43,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:43,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:43,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 13:38:43,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:43,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:43,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:38:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 13:38:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:38:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 13:38:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:43,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:43,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:43,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:43,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:38:43,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:43,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:38:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:43,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 13:38:43,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009509291] [2020-09-25 13:38:43,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:38:43,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:38:43,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198476500] [2020-09-25 13:38:43,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:38:43,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:43,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:38:43,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:38:43,571 INFO L87 Difference]: Start difference. First operand 245 states and 273 transitions. Second operand 12 states. [2020-09-25 13:38:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:38:44,430 INFO L93 Difference]: Finished difference Result 457 states and 516 transitions. [2020-09-25 13:38:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:38:44,430 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-09-25 13:38:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:38:44,433 INFO L225 Difference]: With dead ends: 457 [2020-09-25 13:38:44,433 INFO L226 Difference]: Without dead ends: 312 [2020-09-25 13:38:44,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2020-09-25 13:38:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-25 13:38:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 267. [2020-09-25 13:38:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 13:38:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 301 transitions. [2020-09-25 13:38:44,450 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 301 transitions. Word has length 106 [2020-09-25 13:38:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:38:44,451 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 301 transitions. [2020-09-25 13:38:44,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:38:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 301 transitions. [2020-09-25 13:38:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 13:38:44,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:44,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:44,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:38:44,454 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:44,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:44,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1281866795, now seen corresponding path program 1 times [2020-09-25 13:38:44,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:44,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23790976] [2020-09-25 13:38:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:45,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:45,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 13:38:45,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:38:45,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1201 [2020-09-25 13:38:45,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:45,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:38:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:38:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:38:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:45,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:45,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:45,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:45,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:38:45,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:45,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:38:45,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:38:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:45,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:45,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:45,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:45,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:45,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:38:45,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:45,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:38:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:45,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:38:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:45,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:45,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:45,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:45,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:38:45,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:45,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:38:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:38:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:45,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:45,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:38:45,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:38:45,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:45,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:38:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:45,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 13:38:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:45,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:45,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:38:45,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:45,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:38:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:45,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 13:38:45,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23790976] [2020-09-25 13:38:45,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:38:45,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:38:45,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563873638] [2020-09-25 13:38:45,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:38:45,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:45,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:38:45,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:38:45,801 INFO L87 Difference]: Start difference. First operand 267 states and 301 transitions. Second operand 7 states. [2020-09-25 13:38:46,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:38:46,164 INFO L93 Difference]: Finished difference Result 525 states and 593 transitions. [2020-09-25 13:38:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:38:46,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-25 13:38:46,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:38:46,167 INFO L225 Difference]: With dead ends: 525 [2020-09-25 13:38:46,167 INFO L226 Difference]: Without dead ends: 290 [2020-09-25 13:38:46,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:38:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-25 13:38:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 274. [2020-09-25 13:38:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 13:38:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 308 transitions. [2020-09-25 13:38:46,182 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 308 transitions. Word has length 109 [2020-09-25 13:38:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:38:46,182 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 308 transitions. [2020-09-25 13:38:46,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:38:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 308 transitions. [2020-09-25 13:38:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 13:38:46,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:46,184 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, 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] [2020-09-25 13:38:46,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:38:46,185 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:46,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1761287741, now seen corresponding path program 2 times [2020-09-25 13:38:46,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:46,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121856333] [2020-09-25 13:38:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:46,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:48,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:48,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 13:38:48,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:38:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-09-25 13:38:48,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:48,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:38:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:38:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:38:48,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:48,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:48,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:48,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:38:48,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:48,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:48,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 13:38:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:48,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:48,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:48,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:48,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:38:48,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:48,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:38:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:38:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:48,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:48,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:48,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:38:48,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:48,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:38:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:48,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 13:38:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:48,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:48,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:48,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:38:48,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:38:48,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:48,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:38:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 13:38:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:48,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:48,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:48,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:38:48,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:48,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:38:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 13:38:48,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121856333] [2020-09-25 13:38:48,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:38:48,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:38:48,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166256385] [2020-09-25 13:38:48,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:38:48,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:48,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:38:48,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:38:48,170 INFO L87 Difference]: Start difference. First operand 274 states and 308 transitions. Second operand 9 states. [2020-09-25 13:38:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:38:48,629 INFO L93 Difference]: Finished difference Result 532 states and 600 transitions. [2020-09-25 13:38:48,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:38:48,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-09-25 13:38:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:38:48,635 INFO L225 Difference]: With dead ends: 532 [2020-09-25 13:38:48,636 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 13:38:48,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:38:48,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 13:38:48,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 281. [2020-09-25 13:38:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-25 13:38:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 315 transitions. [2020-09-25 13:38:48,654 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 315 transitions. Word has length 116 [2020-09-25 13:38:48,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:38:48,654 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 315 transitions. [2020-09-25 13:38:48,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:38:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 315 transitions. [2020-09-25 13:38:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 13:38:48,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:38:48,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:38:48,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:38:48,657 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:38:48,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:38:48,658 INFO L82 PathProgramCache]: Analyzing trace with hash -302687211, now seen corresponding path program 3 times [2020-09-25 13:38:48,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:38:48,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904104436] [2020-09-25 13:38:48,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:38:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:51,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:51,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 13:38:51,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:38:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2875 [2020-09-25 13:38:51,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:51,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:51,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:38:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:38:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:38:51,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:51,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:38:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:51,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:51,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:38:51,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:51,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:38:51,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:51,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:38:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:51,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:51,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 13:38:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:51,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:51,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:51,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:38:51,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:38:51,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:51,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:38:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:51,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:38:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:51,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:51,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:51,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:38:51,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:51,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:38:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:51,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:38:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:51,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:51,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:38:51,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:38:51,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:51,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:38:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 13:38:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:38:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:38:51,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:38:51,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:38:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:38:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:38:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:38:51,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:38:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:38:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:38:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:38:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:38:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 13:38:51,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904104436] [2020-09-25 13:38:51,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:38:51,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:38:51,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575416682] [2020-09-25 13:38:51,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:38:51,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:38:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:38:51,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:38:51,724 INFO L87 Difference]: Start difference. First operand 281 states and 315 transitions. Second operand 11 states.