/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:31:43,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:31:43,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:31:43,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:31:43,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:31:43,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:31:43,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:31:43,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:31:43,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:31:43,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:31:43,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:31:43,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:31:43,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:31:43,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:31:43,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:31:43,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:31:43,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:31:43,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:31:43,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:31:43,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:31:43,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:31:43,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:31:43,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:31:43,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:31:43,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:31:43,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:31:43,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:31:43,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:31:43,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:31:43,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:31:43,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:31:43,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:31:43,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:31:43,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:31:43,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:31:43,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:31:43,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:31:43,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:31:43,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:31:43,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:31:43,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:31:43,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 17:31:43,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:31:43,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:31:43,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:31:43,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:31:43,800 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:31:43,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:31:43,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:31:43,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:31:43,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:31:43,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:31:43,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:31:43,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:31:43,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:31:43,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:31:43,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:31:43,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:31:43,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:31:43,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:31:43,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:31:43,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:31:43,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:31:43,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:31:43,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:31:43,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:31:43,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:31:43,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:31:43,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:31:43,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:31:43,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:31:43,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:31:44,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:31:44,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:31:44,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:31:44,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:31:44,169 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:31:44,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-14 17:31:44,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8237005c/9c8f35e7b1394c8e9f89ca2952db8556/FLAG7c8db3bb0 [2020-10-14 17:31:44,718 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:31:44,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-14 17:31:44,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8237005c/9c8f35e7b1394c8e9f89ca2952db8556/FLAG7c8db3bb0 [2020-10-14 17:31:45,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8237005c/9c8f35e7b1394c8e9f89ca2952db8556 [2020-10-14 17:31:45,100 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:31:45,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:31:45,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:31:45,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:31:45,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:31:45,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a48022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45, skipping insertion in model container [2020-10-14 17:31:45,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:31:45,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:31:45,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:31:45,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:31:45,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:31:45,359 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:31:45,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45 WrapperNode [2020-10-14 17:31:45,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:31:45,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:31:45,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:31:45,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:31:45,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:31:45,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:31:45,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:31:45,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:31:45,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:31:45,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:31:45,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:31:45,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 17:31:45,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:31:45,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:31:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:31:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 17:31:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 17:31:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:31:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:31:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:31:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:31:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:31:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:31:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:31:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:31:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:31:45,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:31:45,903 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:31:45,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:31:45 BoogieIcfgContainer [2020-10-14 17:31:45,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:31:45,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:31:45,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:31:45,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:31:45,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:31:45" (1/3) ... [2020-10-14 17:31:45,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183268dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:31:45, skipping insertion in model container [2020-10-14 17:31:45,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (2/3) ... [2020-10-14 17:31:45,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183268dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:31:45, skipping insertion in model container [2020-10-14 17:31:45,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:31:45" (3/3) ... [2020-10-14 17:31:45,916 INFO L109 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2020-10-14 17:31:45,927 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:31:45,935 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:31:45,949 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:31:45,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:31:45,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:31:45,973 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:31:45,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:31:45,973 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:31:45,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:31:45,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:31:45,974 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:31:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-14 17:31:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 17:31:45,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:45,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:45,999 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:46,004 INFO L82 PathProgramCache]: Analyzing trace with hash -374325002, now seen corresponding path program 1 times [2020-10-14 17:31:46,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:46,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912327790] [2020-10-14 17:31:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:46,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 17:31:46,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:31:46,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-14 17:31:46,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:46,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:31:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 17:31:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:31:46,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:46,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:46,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:31:46,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:46,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:46,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:31:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:46,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:46,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 17:31:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:46,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:46,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:31:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:46,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:46,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:46,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 17:31:46,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:46,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:31:46,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912327790] [2020-10-14 17:31:46,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:31:46,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 17:31:46,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596400249] [2020-10-14 17:31:46,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:31:46,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:46,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:31:46,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:31:46,758 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-10-14 17:31:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:47,000 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2020-10-14 17:31:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:31:47,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-14 17:31:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:47,012 INFO L225 Difference]: With dead ends: 78 [2020-10-14 17:31:47,012 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 17:31:47,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:31:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 17:31:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 17:31:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 17:31:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-14 17:31:47,079 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 27 [2020-10-14 17:31:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:47,079 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-14 17:31:47,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:31:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-14 17:31:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 17:31:47,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:47,082 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 17:31:47,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:31:47,083 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:47,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1157530424, now seen corresponding path program 1 times [2020-10-14 17:31:47,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:47,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849357833] [2020-10-14 17:31:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 17:31:47,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 17:31:47,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:31:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 17:31:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:47,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:47,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:47,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:47,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:31:47,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:47,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:31:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:47,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:47,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:47,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:31:47,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849357833] [2020-10-14 17:31:47,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:31:47,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 17:31:47,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063720963] [2020-10-14 17:31:47,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:31:47,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:47,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:31:47,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:31:47,581 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-14 17:31:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:47,790 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-10-14 17:31:47,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:31:47,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-14 17:31:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:47,792 INFO L225 Difference]: With dead ends: 56 [2020-10-14 17:31:47,793 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 17:31:47,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:31:47,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 17:31:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2020-10-14 17:31:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 17:31:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-14 17:31:47,822 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2020-10-14 17:31:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:47,823 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-14 17:31:47,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:31:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-14 17:31:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 17:31:47,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:47,825 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:47,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:31:47,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:47,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:47,827 INFO L82 PathProgramCache]: Analyzing trace with hash -155742140, now seen corresponding path program 1 times [2020-10-14 17:31:47,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:47,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354135160] [2020-10-14 17:31:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:50,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 17:31:50,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 17:31:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2896 [2020-10-14 17:31:50,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:50,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:31:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 17:31:50,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:50,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:50,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:50,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:31:50,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:50,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:51,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:51,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:31:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:51,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:51,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:51,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:31:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:51,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:31:51,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:31:51,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354135160] [2020-10-14 17:31:51,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:51,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:31:51,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563889390] [2020-10-14 17:31:51,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:31:51,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:51,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:31:51,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:31:51,038 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 12 states. [2020-10-14 17:31:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:51,341 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-14 17:31:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:31:51,341 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-14 17:31:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:51,343 INFO L225 Difference]: With dead ends: 59 [2020-10-14 17:31:51,343 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 17:31:51,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:31:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 17:31:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-14 17:31:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:31:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2020-10-14 17:31:51,355 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 41 [2020-10-14 17:31:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:51,356 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2020-10-14 17:31:51,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:31:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2020-10-14 17:31:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 17:31:51,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:51,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:51,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:31:51,358 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:51,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1435605818, now seen corresponding path program 1 times [2020-10-14 17:31:51,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:51,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067502033] [2020-10-14 17:31:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:52,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 17:31:53,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 17:31:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2205 [2020-10-14 17:31:53,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:31:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 17:31:53,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:53,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:31:53,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:53,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:53,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:53,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:53,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:31:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:53,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:53,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:31:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:53,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:53,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:31:53,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067502033] [2020-10-14 17:31:53,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:53,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:31:53,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458633390] [2020-10-14 17:31:53,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:31:53,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:53,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:31:53,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:31:53,872 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand 13 states. [2020-10-14 17:31:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:54,255 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2020-10-14 17:31:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:31:54,256 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 17:31:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:54,259 INFO L225 Difference]: With dead ends: 73 [2020-10-14 17:31:54,259 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 17:31:54,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:31:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 17:31:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2020-10-14 17:31:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:31:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2020-10-14 17:31:54,284 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 41 [2020-10-14 17:31:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:54,286 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2020-10-14 17:31:54,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:31:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2020-10-14 17:31:54,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:31:54,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:54,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:54,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:31:54,291 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:54,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:54,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1619425154, now seen corresponding path program 2 times [2020-10-14 17:31:54,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:54,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904896120] [2020-10-14 17:31:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:55,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:55,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 17:31:55,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:31:55,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1598 [2020-10-14 17:31:55,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:55,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:55,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:31:55,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:55,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 17:31:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:56,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:56,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:56,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:56,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:56,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:31:56,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:31:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:56,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:56,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:31:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:56,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:56,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:31:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:31:56,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904896120] [2020-10-14 17:31:56,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:56,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:31:56,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666893245] [2020-10-14 17:31:56,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:31:56,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:56,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:31:56,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:31:56,280 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand 16 states. [2020-10-14 17:31:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:57,424 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2020-10-14 17:31:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:31:57,425 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-14 17:31:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:57,426 INFO L225 Difference]: With dead ends: 76 [2020-10-14 17:31:57,427 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 17:31:57,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:31:57,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 17:31:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2020-10-14 17:31:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 17:31:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-10-14 17:31:57,439 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 43 [2020-10-14 17:31:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:57,439 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-10-14 17:31:57,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:31:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-10-14 17:31:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:31:57,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:57,441 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:57,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:31:57,442 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:57,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:57,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1712809922, now seen corresponding path program 3 times [2020-10-14 17:31:57,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:57,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669272711] [2020-10-14 17:31:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 17:31:59,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:31:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-10-14 17:31:59,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:31:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 17:31:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:59,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:59,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:59,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:59,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:31:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:59,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:59,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:59,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:31:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:59,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:31:59,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669272711] [2020-10-14 17:31:59,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:59,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:31:59,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415374010] [2020-10-14 17:31:59,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:31:59,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:59,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:31:59,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:31:59,415 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 12 states. [2020-10-14 17:31:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:59,742 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2020-10-14 17:31:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:31:59,743 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-14 17:31:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:59,745 INFO L225 Difference]: With dead ends: 79 [2020-10-14 17:31:59,745 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 17:31:59,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:31:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 17:31:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-10-14 17:31:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 17:31:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2020-10-14 17:31:59,758 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 43 [2020-10-14 17:31:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:59,759 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2020-10-14 17:31:59,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:31:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2020-10-14 17:31:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:31:59,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:59,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:59,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:31:59,761 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:59,761 INFO L82 PathProgramCache]: Analyzing trace with hash 31077252, now seen corresponding path program 2 times [2020-10-14 17:31:59,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:59,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489092565] [2020-10-14 17:31:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:00,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:00,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:01,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:01,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 17:32:01,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:32:01,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-14 17:32:01,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:01,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:32:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 17:32:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:01,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:01,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:01,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:01,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:01,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:01,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:01,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:01,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:01,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:01,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:01,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:01,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:01,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:01,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:01,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:01,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:01,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:01,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:01,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:01,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:01,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:01,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:01,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:01,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:32:01,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:01,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:32:01,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489092565] [2020-10-14 17:32:01,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:01,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:32:01,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607995606] [2020-10-14 17:32:01,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:32:01,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:01,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:32:01,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:32:01,665 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand 17 states. [2020-10-14 17:32:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:03,253 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2020-10-14 17:32:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:32:03,254 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 43 [2020-10-14 17:32:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:03,256 INFO L225 Difference]: With dead ends: 107 [2020-10-14 17:32:03,256 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 17:32:03,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:32:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 17:32:03,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-10-14 17:32:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 17:32:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2020-10-14 17:32:03,270 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 43 [2020-10-14 17:32:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:03,270 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2020-10-14 17:32:03,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:32:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2020-10-14 17:32:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:32:03,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:03,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:03,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:32:03,272 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:03,272 INFO L82 PathProgramCache]: Analyzing trace with hash 124462020, now seen corresponding path program 3 times [2020-10-14 17:32:03,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:03,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630091703] [2020-10-14 17:32:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:03,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:05,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:05,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 17:32:05,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:32:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1967 [2020-10-14 17:32:05,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:05,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:32:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 17:32:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:05,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:05,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:05,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:05,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:05,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:05,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:05,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:05,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:05,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:05,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:05,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:05,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:05,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:05,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:05,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:05,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:05,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:05,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:05,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:05,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:05,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:05,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:32:05,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630091703] [2020-10-14 17:32:05,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:05,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:32:05,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109468025] [2020-10-14 17:32:05,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:32:05,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:05,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:32:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:32:05,614 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand 13 states. [2020-10-14 17:32:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:06,036 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2020-10-14 17:32:06,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:32:06,037 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-14 17:32:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:06,038 INFO L225 Difference]: With dead ends: 92 [2020-10-14 17:32:06,038 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 17:32:06,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:32:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 17:32:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 71. [2020-10-14 17:32:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 17:32:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2020-10-14 17:32:06,057 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 43 [2020-10-14 17:32:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:06,058 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2020-10-14 17:32:06,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:32:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2020-10-14 17:32:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 17:32:06,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:06,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 17:32:06,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:32:06,060 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:06,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:06,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2001627008, now seen corresponding path program 4 times [2020-10-14 17:32:06,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:06,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15083973] [2020-10-14 17:32:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 17:32:07,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:32:07,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-14 17:32:07,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:32:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 17:32:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:07,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:07,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:07,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:07,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:07,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:07,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:07,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:07,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:07,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:07,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:07,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:07,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:32:07,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15083973] [2020-10-14 17:32:07,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:07,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:32:07,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737735654] [2020-10-14 17:32:07,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:32:07,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:07,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:32:07,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:32:07,705 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand 17 states. [2020-10-14 17:32:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:08,765 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2020-10-14 17:32:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:32:08,765 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-14 17:32:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:08,766 INFO L225 Difference]: With dead ends: 99 [2020-10-14 17:32:08,767 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 17:32:08,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:32:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 17:32:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2020-10-14 17:32:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 17:32:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2020-10-14 17:32:08,792 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 45 [2020-10-14 17:32:08,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:08,794 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2020-10-14 17:32:08,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:32:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2020-10-14 17:32:08,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 17:32:08,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:08,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 17:32:08,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:32:08,796 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:08,796 INFO L82 PathProgramCache]: Analyzing trace with hash 312683266, now seen corresponding path program 4 times [2020-10-14 17:32:08,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:08,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82776058] [2020-10-14 17:32:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:08,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:09,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 17:32:09,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:32:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-10-14 17:32:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:09,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:32:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 17:32:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:10,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:10,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:10,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:10,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:10,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:10,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:10,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:10,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:10,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:10,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:10,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:10,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:10,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:10,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:10,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:10,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:10,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:10,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:10,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:10,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:10,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:10,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:10,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:10,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:10,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:10,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:10,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:10,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:10,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:10,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:10,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:10,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:32:10,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82776058] [2020-10-14 17:32:10,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:10,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:32:10,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281836638] [2020-10-14 17:32:10,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:32:10,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:10,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:32:10,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:32:10,491 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand 18 states. [2020-10-14 17:32:11,415 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-14 17:32:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:12,272 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2020-10-14 17:32:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:32:12,273 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-14 17:32:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:12,274 INFO L225 Difference]: With dead ends: 109 [2020-10-14 17:32:12,275 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 17:32:12,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:32:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 17:32:12,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 74. [2020-10-14 17:32:12,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 17:32:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2020-10-14 17:32:12,288 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 45 [2020-10-14 17:32:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:12,288 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2020-10-14 17:32:12,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:32:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2020-10-14 17:32:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 17:32:12,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:12,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:12,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:32:12,290 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:12,290 INFO L82 PathProgramCache]: Analyzing trace with hash 381972414, now seen corresponding path program 5 times [2020-10-14 17:32:12,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:12,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689939381] [2020-10-14 17:32:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:12,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 17:32:13,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:32:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-14 17:32:13,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:13,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:32:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 17:32:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:32:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:13,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:13,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:13,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:13,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:13,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:13,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:13,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:13,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:13,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:13,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:13,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:13,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:13,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:13,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:13,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:13,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:13,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:13,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:13,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:13,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:13,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:13,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:13,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:13,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:13,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:13,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 17:32:13,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689939381] [2020-10-14 17:32:13,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:13,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:32:13,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899010302] [2020-10-14 17:32:13,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:32:13,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:13,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:32:13,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:32:13,600 INFO L87 Difference]: Start difference. First operand 74 states and 96 transitions. Second operand 8 states. [2020-10-14 17:32:13,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:13,795 INFO L93 Difference]: Finished difference Result 118 states and 150 transitions. [2020-10-14 17:32:13,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:32:13,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-14 17:32:13,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:13,797 INFO L225 Difference]: With dead ends: 118 [2020-10-14 17:32:13,797 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 17:32:13,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:32:13,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 17:32:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2020-10-14 17:32:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 17:32:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-10-14 17:32:13,806 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 47 [2020-10-14 17:32:13,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:13,806 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-10-14 17:32:13,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:32:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-10-14 17:32:13,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 17:32:13,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:13,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 17:32:13,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:32:13,808 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:13,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1360681298, now seen corresponding path program 6 times [2020-10-14 17:32:13,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:13,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412034436] [2020-10-14 17:32:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:13,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:14,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:16,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:16,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:17,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 17:32:18,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 17:32:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4655 [2020-10-14 17:32:18,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:32:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 17:32:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:18,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:18,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:18,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:18,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:18,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:18,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:18,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:32:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:18,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:18,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412034436] [2020-10-14 17:32:18,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:18,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:32:18,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225572900] [2020-10-14 17:32:18,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:32:18,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:18,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:32:18,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:32:18,769 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 14 states. [2020-10-14 17:32:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:19,346 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2020-10-14 17:32:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:32:19,346 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-14 17:32:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:19,348 INFO L225 Difference]: With dead ends: 92 [2020-10-14 17:32:19,348 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 17:32:19,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:32:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 17:32:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-10-14 17:32:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 17:32:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2020-10-14 17:32:19,359 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 51 [2020-10-14 17:32:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:19,360 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2020-10-14 17:32:19,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:32:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2020-10-14 17:32:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 17:32:19,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:19,361 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 17:32:19,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:32:19,361 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:19,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:19,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1501229908, now seen corresponding path program 1 times [2020-10-14 17:32:19,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:19,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343982067] [2020-10-14 17:32:19,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:19,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:20,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:21,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:22,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:22,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:23,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 17:32:23,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 17:32:23,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4105 [2020-10-14 17:32:23,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:23,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:23,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:32:23,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 17:32:23,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:23,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:23,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:23,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:23,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:23,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:23,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:23,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:23,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:23,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:23,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:23,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:23,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:23,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:23,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:23,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:23,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:23,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:23,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:23,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:23,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:23,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:23,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:23,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:23,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:23,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:23,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:23,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:23,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:32:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:23,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:23,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:23,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343982067] [2020-10-14 17:32:23,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:23,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:32:23,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49505697] [2020-10-14 17:32:23,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:32:23,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:23,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:32:23,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:32:23,698 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand 14 states. [2020-10-14 17:32:24,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:24,340 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2020-10-14 17:32:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:32:24,341 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-14 17:32:24,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:24,342 INFO L225 Difference]: With dead ends: 85 [2020-10-14 17:32:24,342 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 17:32:24,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:32:24,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 17:32:24,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2020-10-14 17:32:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 17:32:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-10-14 17:32:24,352 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 51 [2020-10-14 17:32:24,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:24,352 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-10-14 17:32:24,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:32:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-10-14 17:32:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 17:32:24,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:24,353 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 17:32:24,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:32:24,353 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:24,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:24,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1293146800, now seen corresponding path program 7 times [2020-10-14 17:32:24,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:24,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964471733] [2020-10-14 17:32:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:25,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:26,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:26,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:26,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:27,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:27,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 17:32:27,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 17:32:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-14 17:32:27,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:27,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:32:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 17:32:27,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:27,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:27,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:27,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:27,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:27,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:27,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:27,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:27,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:27,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:27,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:27,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:27,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:27,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:27,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:27,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:27,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:27,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:27,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:27,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:27,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:27,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:27,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:27,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:27,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:27,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:32:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:27,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:27,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:27,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:27,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:27,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:27,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:27,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:27,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964471733] [2020-10-14 17:32:27,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:27,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:32:27,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759541512] [2020-10-14 17:32:27,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:32:27,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:27,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:32:27,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:32:27,676 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 15 states. [2020-10-14 17:32:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:28,338 INFO L93 Difference]: Finished difference Result 95 states and 119 transitions. [2020-10-14 17:32:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:32:28,338 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-14 17:32:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:28,340 INFO L225 Difference]: With dead ends: 95 [2020-10-14 17:32:28,340 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 17:32:28,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:32:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 17:32:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 65. [2020-10-14 17:32:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 17:32:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2020-10-14 17:32:28,357 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 53 [2020-10-14 17:32:28,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:28,358 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2020-10-14 17:32:28,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:32:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2020-10-14 17:32:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 17:32:28,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:28,359 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 17:32:28,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:32:28,359 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:28,360 INFO L82 PathProgramCache]: Analyzing trace with hash 630081234, now seen corresponding path program 2 times [2020-10-14 17:32:28,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:28,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321778542] [2020-10-14 17:32:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:29,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:29,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:29,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:30,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:31,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 17:32:31,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 17:32:31,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3056 [2020-10-14 17:32:31,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:31,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:32:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 17:32:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:31,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:31,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:31,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:31,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:31,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:31,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:31,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:31,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:31,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:31,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:31,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:31,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:31,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:31,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:31,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:31,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:31,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:31,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:31,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:31,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:31,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:31,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:31,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:31,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:31,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:31,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:31,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:31,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:32:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:31,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:31,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:31,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:31,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:31,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321778542] [2020-10-14 17:32:31,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:31,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:32:31,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686058659] [2020-10-14 17:32:31,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:32:31,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:31,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:32:31,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:32:31,994 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand 15 states. [2020-10-14 17:32:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:32,807 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-10-14 17:32:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:32:32,807 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-14 17:32:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:32,809 INFO L225 Difference]: With dead ends: 89 [2020-10-14 17:32:32,809 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 17:32:32,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:32:32,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 17:32:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 44. [2020-10-14 17:32:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 17:32:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 17:32:32,817 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 53 [2020-10-14 17:32:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:32,822 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 17:32:32,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:32:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 17:32:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 17:32:32,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:32,823 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 17:32:32,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:32:32,824 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:32,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:32,824 INFO L82 PathProgramCache]: Analyzing trace with hash -504759922, now seen corresponding path program 8 times [2020-10-14 17:32:32,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:32,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376393078] [2020-10-14 17:32:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:33,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:34,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:34,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:35,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 17:32:35,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 17:32:35,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2849 [2020-10-14 17:32:35,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:35,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:32:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 17:32:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:36,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:36,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:36,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:36,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:36,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:36,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:36,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:36,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:36,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:36,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:36,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:36,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:36,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:36,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:36,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:36,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:36,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:36,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:36,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:36,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:36,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:36,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:36,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:36,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:36,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:36,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:36,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:36,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:36,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:36,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:32:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:36,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:36,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:36,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:36,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:36,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:36,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:36,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376393078] [2020-10-14 17:32:36,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:36,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:32:36,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332520891] [2020-10-14 17:32:36,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:32:36,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:36,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:32:36,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:32:36,164 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 19 states. [2020-10-14 17:32:37,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:37,216 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2020-10-14 17:32:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:32:37,217 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-14 17:32:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:37,218 INFO L225 Difference]: With dead ends: 78 [2020-10-14 17:32:37,218 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 17:32:37,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:32:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 17:32:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-10-14 17:32:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 17:32:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2020-10-14 17:32:37,231 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 55 [2020-10-14 17:32:37,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:37,232 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2020-10-14 17:32:37,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:32:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2020-10-14 17:32:37,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 17:32:37,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:37,236 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 17:32:37,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:32:37,237 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:37,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2101263632, now seen corresponding path program 3 times [2020-10-14 17:32:37,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:37,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108522066] [2020-10-14 17:32:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:37,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:37,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:39,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 17:32:39,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 17:32:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2482 [2020-10-14 17:32:39,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:39,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:32:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 17:32:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:40,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:40,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:40,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:40,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:40,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:40,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:40,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:40,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:40,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:40,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:40,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:40,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:40,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:40,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:40,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:40,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:40,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:40,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:40,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:40,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:40,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:40,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:40,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:40,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:40,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:40,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:40,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:40,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:40,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:40,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:40,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:40,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:40,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:40,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:40,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:32:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:40,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:40,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:40,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:40,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:40,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:40,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:40,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:40,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108522066] [2020-10-14 17:32:40,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:40,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:32:40,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059580935] [2020-10-14 17:32:40,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:32:40,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:40,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:32:40,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:32:40,529 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand 18 states. [2020-10-14 17:32:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:41,899 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2020-10-14 17:32:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:32:41,900 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 55 [2020-10-14 17:32:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:41,902 INFO L225 Difference]: With dead ends: 94 [2020-10-14 17:32:41,902 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 17:32:41,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:32:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 17:32:41,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2020-10-14 17:32:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 17:32:41,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2020-10-14 17:32:41,915 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 55 [2020-10-14 17:32:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:41,916 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2020-10-14 17:32:41,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:32:41,916 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2020-10-14 17:32:41,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 17:32:41,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:41,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 17:32:41,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:32:41,917 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:41,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:41,917 INFO L82 PathProgramCache]: Analyzing trace with hash 881443472, now seen corresponding path program 4 times [2020-10-14 17:32:41,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:41,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226452866] [2020-10-14 17:32:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:41,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:43,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:43,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:44,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:44,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:44,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 17:32:44,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 17:32:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2807 [2020-10-14 17:32:44,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:44,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:32:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 17:32:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:45,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:45,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:45,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:45,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:45,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:45,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:45,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:45,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:45,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:45,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:45,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:45,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:45,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:45,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:45,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:45,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:45,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:45,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:45,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:45,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:45,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:45,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:45,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:45,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:45,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:45,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:45,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:45,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:45,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:45,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:45,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:32:45,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:32:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:45,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:45,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:45,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:45,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:45,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:45,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:45,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:45,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226452866] [2020-10-14 17:32:45,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:45,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:32:45,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643829043] [2020-10-14 17:32:45,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:32:45,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:45,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:32:45,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:32:45,615 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand 19 states. [2020-10-14 17:32:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:46,947 INFO L93 Difference]: Finished difference Result 119 states and 150 transitions. [2020-10-14 17:32:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:32:46,948 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-14 17:32:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:46,949 INFO L225 Difference]: With dead ends: 119 [2020-10-14 17:32:46,950 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 17:32:46,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:32:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 17:32:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 69. [2020-10-14 17:32:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 17:32:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2020-10-14 17:32:46,960 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 55 [2020-10-14 17:32:46,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:46,961 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2020-10-14 17:32:46,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:32:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2020-10-14 17:32:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 17:32:46,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:46,962 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 17:32:46,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:32:46,962 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:46,962 INFO L82 PathProgramCache]: Analyzing trace with hash -807500270, now seen corresponding path program 5 times [2020-10-14 17:32:46,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:46,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622876123] [2020-10-14 17:32:46,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:49,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 17:32:49,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 17:32:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2700 [2020-10-14 17:32:49,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:49,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:32:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 17:32:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:50,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:50,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:50,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:50,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:50,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:50,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:32:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:50,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:50,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622876123] [2020-10-14 17:32:50,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:50,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:32:50,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119987308] [2020-10-14 17:32:50,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:32:50,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:50,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:32:50,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:32:50,298 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand 19 states. [2020-10-14 17:32:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:51,610 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2020-10-14 17:32:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:32:51,611 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-14 17:32:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:51,612 INFO L225 Difference]: With dead ends: 101 [2020-10-14 17:32:51,612 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 17:32:51,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:32:51,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 17:32:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 63. [2020-10-14 17:32:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 17:32:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2020-10-14 17:32:51,624 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 55 [2020-10-14 17:32:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:51,624 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2020-10-14 17:32:51,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:32:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2020-10-14 17:32:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:32:51,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:51,625 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-14 17:32:51,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:32:51,625 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1220785740, now seen corresponding path program 9 times [2020-10-14 17:32:51,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:51,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176956840] [2020-10-14 17:32:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:51,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:52,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:52,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:52,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:53,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:53,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:32:53,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 17:32:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2125 [2020-10-14 17:32:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:53,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:32:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 17:32:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:54,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:54,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:32:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:32:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:54,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:32:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:54,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:54,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176956840] [2020-10-14 17:32:54,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:54,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:32:54,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672294589] [2020-10-14 17:32:54,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:32:54,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:54,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:32:54,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:32:54,631 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand 24 states. [2020-10-14 17:32:56,370 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-14 17:32:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:57,097 INFO L93 Difference]: Finished difference Result 102 states and 128 transitions. [2020-10-14 17:32:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:32:57,099 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 57 [2020-10-14 17:32:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:57,100 INFO L225 Difference]: With dead ends: 102 [2020-10-14 17:32:57,100 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 17:32:57,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=255, Invalid=2097, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 17:32:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 17:32:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2020-10-14 17:32:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 17:32:57,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 109 transitions. [2020-10-14 17:32:57,117 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 109 transitions. Word has length 57 [2020-10-14 17:32:57,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:57,117 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 109 transitions. [2020-10-14 17:32:57,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:32:57,117 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 109 transitions. [2020-10-14 17:32:57,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:32:57,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:57,118 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-14 17:32:57,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:32:57,118 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:57,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:57,119 INFO L82 PathProgramCache]: Analyzing trace with hash 769234572, now seen corresponding path program 10 times [2020-10-14 17:32:57,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:57,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696445637] [2020-10-14 17:32:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:57,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:57,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:58,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:00,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:00,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:33:00,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 17:33:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3131 [2020-10-14 17:33:00,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:00,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:33:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 17:33:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:01,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:01,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:01,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:01,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:01,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:01,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:01,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:01,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:01,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:01,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:01,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:01,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:01,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:01,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:01,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:01,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:01,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:01,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:01,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:01,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:01,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:01,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:01,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:01,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:01,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:01,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:01,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696445637] [2020-10-14 17:33:01,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:01,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:33:01,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368227883] [2020-10-14 17:33:01,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:33:01,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:01,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:33:01,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:33:01,332 INFO L87 Difference]: Start difference. First operand 84 states and 109 transitions. Second operand 19 states. [2020-10-14 17:33:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:02,415 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2020-10-14 17:33:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:33:02,416 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-10-14 17:33:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:02,417 INFO L225 Difference]: With dead ends: 101 [2020-10-14 17:33:02,417 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 17:33:02,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:33:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 17:33:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2020-10-14 17:33:02,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 17:33:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2020-10-14 17:33:02,431 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 57 [2020-10-14 17:33:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:02,431 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2020-10-14 17:33:02,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:33:02,432 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2020-10-14 17:33:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:33:02,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:02,432 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-14 17:33:02,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:33:02,433 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:02,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:02,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1643487566, now seen corresponding path program 5 times [2020-10-14 17:33:02,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:02,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652365304] [2020-10-14 17:33:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:04,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:04,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:04,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:33:04,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 17:33:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2506 [2020-10-14 17:33:04,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:04,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:33:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 17:33:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:05,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:05,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:05,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:05,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:05,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:05,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:05,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:05,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:05,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:05,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:05,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:05,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:05,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:05,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:05,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:05,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:05,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:05,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:05,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:05,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:05,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:05,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:05,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:05,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:05,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:05,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:05,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:05,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:05,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:05,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:05,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:05,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:05,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:05,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:05,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652365304] [2020-10-14 17:33:05,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:05,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:33:05,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800514909] [2020-10-14 17:33:05,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:33:05,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:05,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:33:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:33:05,792 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand 24 states. [2020-10-14 17:33:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:08,720 INFO L93 Difference]: Finished difference Result 120 states and 152 transitions. [2020-10-14 17:33:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:33:08,722 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 57 [2020-10-14 17:33:08,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:08,723 INFO L225 Difference]: With dead ends: 120 [2020-10-14 17:33:08,723 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 17:33:08,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=289, Invalid=2261, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:33:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 17:33:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 98. [2020-10-14 17:33:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 17:33:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2020-10-14 17:33:08,740 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 57 [2020-10-14 17:33:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:08,740 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2020-10-14 17:33:08,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:33:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2020-10-14 17:33:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:33:08,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:08,741 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-14 17:33:08,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:33:08,741 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:08,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:08,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1191936398, now seen corresponding path program 6 times [2020-10-14 17:33:08,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:08,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655416932] [2020-10-14 17:33:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:09,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:09,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:09,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:09,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:11,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:11,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:11,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:33:11,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 17:33:11,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2948 [2020-10-14 17:33:11,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:11,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:11,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:33:11,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:11,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 17:33:11,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:12,332 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-10-14 17:33:12,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:12,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:12,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:12,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:12,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:12,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:12,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:12,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:12,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:12,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:12,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:12,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:12,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:12,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:12,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:12,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:12,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:12,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:12,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:12,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:12,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:12,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:12,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:12,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:12,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:12,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:12,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:12,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:12,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:12,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:12,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:12,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:12,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:12,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:12,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:12,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:12,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:12,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:12,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:12,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655416932] [2020-10-14 17:33:12,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:12,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:33:12,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002255089] [2020-10-14 17:33:12,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:33:12,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:12,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:33:12,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:33:12,801 INFO L87 Difference]: Start difference. First operand 98 states and 129 transitions. Second operand 19 states. [2020-10-14 17:33:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:14,030 INFO L93 Difference]: Finished difference Result 119 states and 151 transitions. [2020-10-14 17:33:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:33:14,031 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-10-14 17:33:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:14,033 INFO L225 Difference]: With dead ends: 119 [2020-10-14 17:33:14,033 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 17:33:14,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:33:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 17:33:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-10-14 17:33:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 17:33:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2020-10-14 17:33:14,047 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 57 [2020-10-14 17:33:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:14,048 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2020-10-14 17:33:14,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:33:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2020-10-14 17:33:14,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:33:14,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:14,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-14 17:33:14,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:33:14,049 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:14,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:14,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1922385614, now seen corresponding path program 7 times [2020-10-14 17:33:14,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:14,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601886672] [2020-10-14 17:33:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:15,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:16,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:16,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:33:16,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 17:33:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2448 [2020-10-14 17:33:16,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:16,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:33:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:16,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 17:33:16,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:17,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:17,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:17,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:17,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:17,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:17,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:17,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:17,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:17,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:17,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:17,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:17,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:17,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:17,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:17,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:17,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:17,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:17,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:17,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:17,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:17,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:17,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:17,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:17,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:17,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:17,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:17,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:17,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:17,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:17,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:17,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:17,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:17,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:17,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601886672] [2020-10-14 17:33:17,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:17,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:33:17,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368558563] [2020-10-14 17:33:17,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:33:17,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:17,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:33:17,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:33:17,741 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand 24 states. [2020-10-14 17:33:20,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:20,516 INFO L93 Difference]: Finished difference Result 148 states and 186 transitions. [2020-10-14 17:33:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:33:20,517 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 57 [2020-10-14 17:33:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:20,519 INFO L225 Difference]: With dead ends: 148 [2020-10-14 17:33:20,519 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 17:33:20,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 17:33:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 17:33:20,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 98. [2020-10-14 17:33:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 17:33:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2020-10-14 17:33:20,540 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 57 [2020-10-14 17:33:20,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:20,540 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2020-10-14 17:33:20,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:33:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2020-10-14 17:33:20,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:33:20,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:20,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-14 17:33:20,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:33:20,542 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:20,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:20,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1470834446, now seen corresponding path program 8 times [2020-10-14 17:33:20,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:20,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021370585] [2020-10-14 17:33:20,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:20,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:21,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:22,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:22,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:33:23,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 17:33:23,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2539 [2020-10-14 17:33:23,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:33:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 17:33:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,940 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-10-14 17:33:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:24,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:24,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:24,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:24,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:24,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:24,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:24,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:24,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:24,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:24,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:24,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:24,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:24,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:24,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:24,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:24,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:24,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:24,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:24,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:24,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:24,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:24,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:24,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:24,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:24,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:24,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:24,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:24,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:24,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:24,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:24,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:24,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021370585] [2020-10-14 17:33:24,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:24,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:33:24,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104779373] [2020-10-14 17:33:24,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:33:24,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:24,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:33:24,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:33:24,265 INFO L87 Difference]: Start difference. First operand 98 states and 129 transitions. Second operand 21 states. [2020-10-14 17:33:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:25,100 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2020-10-14 17:33:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:33:25,101 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-14 17:33:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:25,102 INFO L225 Difference]: With dead ends: 143 [2020-10-14 17:33:25,102 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 17:33:25,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:33:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 17:33:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 86. [2020-10-14 17:33:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 17:33:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2020-10-14 17:33:25,120 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 57 [2020-10-14 17:33:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:25,121 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2020-10-14 17:33:25,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:33:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2020-10-14 17:33:25,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:33:25,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:25,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-14 17:33:25,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:33:25,123 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1949879856, now seen corresponding path program 6 times [2020-10-14 17:33:25,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:25,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945490622] [2020-10-14 17:33:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:26,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:27,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:33:27,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 17:33:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2569 [2020-10-14 17:33:27,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:27,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:33:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 17:33:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:28,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:28,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:28,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:28,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:28,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:28,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:28,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:28,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:28,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:28,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945490622] [2020-10-14 17:33:28,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:28,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:33:28,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806398625] [2020-10-14 17:33:28,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:33:28,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:28,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:33:28,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:33:28,841 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand 25 states. [2020-10-14 17:33:30,884 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-14 17:33:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:32,091 INFO L93 Difference]: Finished difference Result 111 states and 138 transitions. [2020-10-14 17:33:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 17:33:32,092 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-10-14 17:33:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:32,094 INFO L225 Difference]: With dead ends: 111 [2020-10-14 17:33:32,094 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 17:33:32,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=308, Invalid=2662, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:33:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 17:33:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2020-10-14 17:33:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 17:33:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2020-10-14 17:33:32,109 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 57 [2020-10-14 17:33:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:32,109 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2020-10-14 17:33:32,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:33:32,109 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2020-10-14 17:33:32,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:33:32,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:32,110 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-14 17:33:32,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:33:32,110 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:32,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:32,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1893536272, now seen corresponding path program 7 times [2020-10-14 17:33:32,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:32,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055789501] [2020-10-14 17:33:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:32,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:35,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:35,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:33:35,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 17:33:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3111 [2020-10-14 17:33:35,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:35,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:33:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 17:33:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:35,971 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-10-14 17:33:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:36,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:36,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:36,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:36,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:36,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:36,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055789501] [2020-10-14 17:33:36,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:36,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:33:36,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901374055] [2020-10-14 17:33:36,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:33:36,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:36,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:33:36,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:33:36,458 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand 21 states. [2020-10-14 17:33:37,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:37,591 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2020-10-14 17:33:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:33:37,592 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-14 17:33:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:37,594 INFO L225 Difference]: With dead ends: 101 [2020-10-14 17:33:37,594 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 17:33:37,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:33:37,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 17:33:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 65. [2020-10-14 17:33:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 17:33:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2020-10-14 17:33:37,609 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 57 [2020-10-14 17:33:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:37,610 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2020-10-14 17:33:37,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:33:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2020-10-14 17:33:37,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 17:33:37,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:37,611 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:37,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:33:37,611 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:37,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1463815114, now seen corresponding path program 11 times [2020-10-14 17:33:37,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:37,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033864737] [2020-10-14 17:33:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:37,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:39,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:40,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:40,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 17:33:40,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:33:40,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2782 [2020-10-14 17:33:40,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:40,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:40,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:33:40,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 17:33:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:41,330 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-10-14 17:33:41,489 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-14 17:33:41,712 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-10-14 17:33:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:42,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:42,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:42,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:42,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:42,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:42,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:42,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:42,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:42,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:42,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:42,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:42,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:42,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:42,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:42,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:42,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:42,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:42,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:42,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:42,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:42,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:42,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:42,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:42,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:42,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:42,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:42,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:42,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:42,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:42,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:42,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:42,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:42,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033864737] [2020-10-14 17:33:42,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:42,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:33:42,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501560065] [2020-10-14 17:33:42,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:33:42,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:42,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:33:42,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:33:42,533 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand 25 states. [2020-10-14 17:33:44,114 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-14 17:33:44,502 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2020-10-14 17:33:44,700 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2020-10-14 17:33:44,928 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2020-10-14 17:33:45,208 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-10-14 17:33:45,379 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-14 17:33:45,566 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2020-10-14 17:33:46,184 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-10-14 17:33:46,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:46,659 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2020-10-14 17:33:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:33:46,660 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 59 [2020-10-14 17:33:46,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:46,663 INFO L225 Difference]: With dead ends: 104 [2020-10-14 17:33:46,663 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 17:33:46,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=339, Invalid=2523, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 17:33:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 17:33:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2020-10-14 17:33:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 17:33:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2020-10-14 17:33:46,684 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 59 [2020-10-14 17:33:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:46,684 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2020-10-14 17:33:46,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:33:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2020-10-14 17:33:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 17:33:46,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:46,686 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2020-10-14 17:33:46,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:33:46,686 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:46,686 INFO L82 PathProgramCache]: Analyzing trace with hash -341623220, now seen corresponding path program 9 times [2020-10-14 17:33:46,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:46,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482494299] [2020-10-14 17:33:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:47,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:48,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:49,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:49,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 17:33:49,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:33:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2530 [2020-10-14 17:33:49,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:49,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:33:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 17:33:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:49,633 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-10-14 17:33:49,783 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-10-14 17:33:50,308 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-10-14 17:33:50,459 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-10-14 17:33:50,632 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-10-14 17:33:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:51,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:51,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:51,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:51,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:51,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:51,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:51,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:51,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:51,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:51,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:51,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:51,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:51,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:51,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:51,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:51,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:51,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:51,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:51,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:51,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:51,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:51,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:51,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:51,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:51,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:51,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:51,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:51,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:51,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:51,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482494299] [2020-10-14 17:33:51,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:51,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:33:51,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754718810] [2020-10-14 17:33:51,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:33:51,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:51,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:33:51,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:33:51,264 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand 24 states. [2020-10-14 17:33:52,128 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-14 17:33:52,501 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-14 17:33:52,700 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-14 17:33:52,874 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2020-10-14 17:33:53,053 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2020-10-14 17:33:53,291 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2020-10-14 17:33:53,576 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-10-14 17:33:53,823 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-14 17:33:54,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:54,215 INFO L93 Difference]: Finished difference Result 114 states and 141 transitions. [2020-10-14 17:33:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:33:54,216 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 59 [2020-10-14 17:33:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:54,217 INFO L225 Difference]: With dead ends: 114 [2020-10-14 17:33:54,217 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 17:33:54,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:33:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 17:33:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 84. [2020-10-14 17:33:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 17:33:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2020-10-14 17:33:54,235 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 59 [2020-10-14 17:33:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:54,236 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2020-10-14 17:33:54,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:33:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2020-10-14 17:33:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 17:33:54,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:54,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2020-10-14 17:33:54,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:33:54,237 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:54,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1391428556, now seen corresponding path program 10 times [2020-10-14 17:33:54,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:54,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101579141] [2020-10-14 17:33:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:54,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:56,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:56,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 17:33:56,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:33:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2621 [2020-10-14 17:33:56,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:56,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:33:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 17:33:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,739 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2020-10-14 17:33:57,914 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2020-10-14 17:33:58,139 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-10-14 17:33:58,294 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-14 17:33:58,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:58,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:58,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:58,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:58,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:58,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:58,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:58,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:58,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:58,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:58,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:58,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:58,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:58,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:58,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:58,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:33:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:58,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:58,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:58,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:33:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:58,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:58,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:58,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:58,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:58,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:58,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:33:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:58,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:58,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:58,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:58,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:58,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:58,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:58,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:58,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101579141] [2020-10-14 17:33:58,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:58,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:33:58,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491454812] [2020-10-14 17:33:58,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:33:58,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:58,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:33:58,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:33:58,796 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand 26 states. [2020-10-14 17:33:59,940 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-14 17:34:00,347 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-14 17:34:00,578 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-14 17:34:00,966 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2020-10-14 17:34:01,204 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2020-10-14 17:34:01,415 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-14 17:34:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:02,128 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2020-10-14 17:34:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:34:02,129 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 59 [2020-10-14 17:34:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:02,130 INFO L225 Difference]: With dead ends: 133 [2020-10-14 17:34:02,130 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 17:34:02,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=318, Invalid=2334, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 17:34:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 17:34:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2020-10-14 17:34:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 17:34:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2020-10-14 17:34:02,155 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 59 [2020-10-14 17:34:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:02,156 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2020-10-14 17:34:02,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:34:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2020-10-14 17:34:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 17:34:02,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:02,157 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:02,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:34:02,157 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:02,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:02,160 INFO L82 PathProgramCache]: Analyzing trace with hash -414009778, now seen corresponding path program 8 times [2020-10-14 17:34:02,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:02,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202524649] [2020-10-14 17:34:02,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:02,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:02,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:04,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 17:34:04,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:34:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2613 [2020-10-14 17:34:04,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:04,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:04,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:34:04,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:04,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 17:34:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:05,647 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-10-14 17:34:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:06,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:06,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:06,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:06,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:06,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:06,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:06,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:06,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:06,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:06,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:34:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:06,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:06,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:06,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:06,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:06,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:06,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:06,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:06,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:06,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:34:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:06,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:06,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:06,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:06,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:06,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:06,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:34:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:06,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:06,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:06,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:06,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:06,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:06,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:06,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:34:06,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202524649] [2020-10-14 17:34:06,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:06,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:34:06,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520171727] [2020-10-14 17:34:06,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:34:06,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:06,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:34:06,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:34:06,224 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand 26 states. [2020-10-14 17:34:07,365 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-14 17:34:07,619 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-14 17:34:07,824 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-14 17:34:08,169 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-10-14 17:34:08,369 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-10-14 17:34:08,569 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-10-14 17:34:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:09,535 INFO L93 Difference]: Finished difference Result 118 states and 145 transitions. [2020-10-14 17:34:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:34:09,536 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 59 [2020-10-14 17:34:09,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:09,538 INFO L225 Difference]: With dead ends: 118 [2020-10-14 17:34:09,538 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 17:34:09,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=324, Invalid=2328, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 17:34:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 17:34:09,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 78. [2020-10-14 17:34:09,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 17:34:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2020-10-14 17:34:09,561 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 59 [2020-10-14 17:34:09,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:09,561 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2020-10-14 17:34:09,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:34:09,561 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2020-10-14 17:34:09,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 17:34:09,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:09,562 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:09,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:34:09,562 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:09,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:09,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1059182200, now seen corresponding path program 12 times [2020-10-14 17:34:09,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:09,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377242831] [2020-10-14 17:34:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:09,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:12,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:12,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 17:34:12,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:34:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2809 [2020-10-14 17:34:12,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:12,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:34:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 17:34:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:13,302 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-14 17:34:13,454 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-10-14 17:34:14,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:14,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:14,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:14,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:14,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:14,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:14,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:14,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:14,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:14,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:14,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:14,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:14,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:14,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:34:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:14,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:14,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:14,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:14,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:14,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:14,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:14,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:14,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:34:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:14,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:14,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:14,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:14,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:14,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:14,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:34:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:14,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:14,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:14,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:14,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:14,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:14,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:34:14,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377242831] [2020-10-14 17:34:14,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:14,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:34:14,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044184716] [2020-10-14 17:34:14,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:34:14,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:14,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:34:14,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:34:14,506 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 27 states. [2020-10-14 17:34:16,173 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-14 17:34:16,390 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2020-10-14 17:34:16,564 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 40 [2020-10-14 17:34:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:16,739 INFO L93 Difference]: Finished difference Result 118 states and 145 transitions. [2020-10-14 17:34:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:34:16,740 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-10-14 17:34:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:16,741 INFO L225 Difference]: With dead ends: 118 [2020-10-14 17:34:16,741 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 17:34:16,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=221, Invalid=1501, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:34:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 17:34:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2020-10-14 17:34:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 17:34:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2020-10-14 17:34:16,775 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 61 [2020-10-14 17:34:16,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:16,776 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2020-10-14 17:34:16,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:34:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2020-10-14 17:34:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 17:34:16,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:16,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2020-10-14 17:34:16,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:34:16,777 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:16,777 INFO L82 PathProgramCache]: Analyzing trace with hash -918633590, now seen corresponding path program 11 times [2020-10-14 17:34:16,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:16,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770954180] [2020-10-14 17:34:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:16,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:19,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:19,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 17:34:19,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:34:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-14 17:34:19,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:19,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:34:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 17:34:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:20,383 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-14 17:34:20,726 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2020-10-14 17:34:21,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:21,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:21,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:21,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:21,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:21,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:21,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:21,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:21,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:21,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:34:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:21,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:21,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:21,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:21,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:21,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:21,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:34:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:21,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:21,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:21,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:21,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:21,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:21,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:21,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:21,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:34:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:21,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:21,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:21,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:21,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:21,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:34:21,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770954180] [2020-10-14 17:34:21,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:21,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:34:21,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776056581] [2020-10-14 17:34:21,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:34:21,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:21,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:34:21,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:34:21,381 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand 27 states. [2020-10-14 17:34:22,479 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-14 17:34:22,850 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-14 17:34:23,166 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-10-14 17:34:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:23,812 INFO L93 Difference]: Finished difference Result 119 states and 146 transitions. [2020-10-14 17:34:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:34:23,813 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-10-14 17:34:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:23,814 INFO L225 Difference]: With dead ends: 119 [2020-10-14 17:34:23,815 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 17:34:23,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=267, Invalid=1895, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:34:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 17:34:23,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2020-10-14 17:34:23,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 17:34:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2020-10-14 17:34:23,841 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 61 [2020-10-14 17:34:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:23,842 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2020-10-14 17:34:23,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:34:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2020-10-14 17:34:23,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 17:34:23,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:23,844 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2020-10-14 17:34:23,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:34:23,844 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:23,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1903187702, now seen corresponding path program 12 times [2020-10-14 17:34:23,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:23,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800526584] [2020-10-14 17:34:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:23,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:26,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:26,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 17:34:26,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:34:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2633 [2020-10-14 17:34:26,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:26,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:34:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 17:34:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,524 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-14 17:34:27,683 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-10-14 17:34:27,924 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2020-10-14 17:34:28,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:28,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:28,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:28,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:28,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:28,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:34:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:28,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:34:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:28,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:28,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:28,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:34:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:28,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:28,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:28,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:34:28,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800526584] [2020-10-14 17:34:28,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:28,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:34:28,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458488860] [2020-10-14 17:34:28,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:34:28,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:28,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:34:28,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:34:28,793 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand 28 states. [2020-10-14 17:34:30,630 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-14 17:34:30,880 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2020-10-14 17:34:31,062 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 40 [2020-10-14 17:34:31,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:31,266 INFO L93 Difference]: Finished difference Result 132 states and 161 transitions. [2020-10-14 17:34:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:34:31,267 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 61 [2020-10-14 17:34:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:31,268 INFO L225 Difference]: With dead ends: 132 [2020-10-14 17:34:31,268 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 17:34:31,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=243, Invalid=1649, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 17:34:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 17:34:31,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2020-10-14 17:34:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 17:34:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2020-10-14 17:34:31,296 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 61 [2020-10-14 17:34:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:31,297 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2020-10-14 17:34:31,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:34:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2020-10-14 17:34:31,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 17:34:31,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:31,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:31,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:34:31,298 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:31,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:31,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1762639092, now seen corresponding path program 9 times [2020-10-14 17:34:31,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:31,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465339414] [2020-10-14 17:34:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 17:34:33,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:34:33,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2628 [2020-10-14 17:34:33,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:34:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 17:34:33,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:34,954 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2020-10-14 17:34:35,095 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-14 17:34:35,779 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-14 17:34:36,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:36,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:36,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:36,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:36,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:36,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:36,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:36,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:36,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:36,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:36,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:36,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:36,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:36,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:34:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:36,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:36,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:36,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:36,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:36,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:34:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:36,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:36,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:36,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:36,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:36,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:36,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:36,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:34:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:36,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:36,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:36,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:36,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:36,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:34:36,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465339414] [2020-10-14 17:34:36,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:36,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:34:36,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948351684] [2020-10-14 17:34:36,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:34:36,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:36,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:34:36,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:34:36,083 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand 28 states. [2020-10-14 17:34:37,343 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-14 17:34:37,742 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-10-14 17:34:37,963 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 54 [2020-10-14 17:34:38,273 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 55 [2020-10-14 17:34:38,660 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-10-14 17:34:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:39,223 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2020-10-14 17:34:39,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:34:39,225 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 61 [2020-10-14 17:34:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:39,226 INFO L225 Difference]: With dead ends: 124 [2020-10-14 17:34:39,226 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 17:34:39,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=272, Invalid=2178, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 17:34:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 17:34:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 82. [2020-10-14 17:34:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 17:34:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2020-10-14 17:34:39,255 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 61 [2020-10-14 17:34:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:39,255 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2020-10-14 17:34:39,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:34:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2020-10-14 17:34:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 17:34:39,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:39,256 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 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] [2020-10-14 17:34:39,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 17:34:39,257 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:39,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1374817976, now seen corresponding path program 13 times [2020-10-14 17:34:39,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:39,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291162694] [2020-10-14 17:34:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:39,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:39,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 17:34:42,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:34:42,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3217 [2020-10-14 17:34:42,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:34:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 17:34:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:34:42,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:42,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:42,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:42,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:34:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:42,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:42,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:42,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:34:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:42,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:34:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:42,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 17:34:42,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291162694] [2020-10-14 17:34:42,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:42,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:34:42,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338244972] [2020-10-14 17:34:42,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:34:42,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:34:42,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:34:42,579 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand 10 states. [2020-10-14 17:34:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:42,932 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2020-10-14 17:34:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:34:42,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-10-14 17:34:42,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:42,934 INFO L225 Difference]: With dead ends: 117 [2020-10-14 17:34:42,934 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 17:34:42,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:34:42,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 17:34:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2020-10-14 17:34:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 17:34:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2020-10-14 17:34:42,952 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 63 [2020-10-14 17:34:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:42,952 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2020-10-14 17:34:42,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:34:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2020-10-14 17:34:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 17:34:42,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:42,953 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 17:34:42,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 17:34:42,953 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:42,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1724329444, now seen corresponding path program 13 times [2020-10-14 17:34:42,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:42,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192019435] [2020-10-14 17:34:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:44,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:44,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:44,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:45,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:46,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:47,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:47,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 17:34:47,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-14 17:34:47,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:34:47,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:47,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:34:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 17:34:47,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:48,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:48,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:48,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:48,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:48,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:48,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:48,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:48,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:48,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:48,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:48,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:48,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:48,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:48,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:48,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:48,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:48,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:48,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:34:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:48,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:48,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:48,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:34:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:48,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:48,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:48,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:48,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:48,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:34:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:48,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:48,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:48,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:48,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:48,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:34:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:48,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:48,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:48,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:48,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:48,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:48,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:34:48,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192019435] [2020-10-14 17:34:48,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:48,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:34:48,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893321182] [2020-10-14 17:34:48,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:34:48,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:48,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:34:48,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:34:48,856 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand 21 states. [2020-10-14 17:34:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:50,387 INFO L93 Difference]: Finished difference Result 128 states and 159 transitions. [2020-10-14 17:34:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:34:50,388 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-14 17:34:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:50,389 INFO L225 Difference]: With dead ends: 128 [2020-10-14 17:34:50,390 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 17:34:50,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:34:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 17:34:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2020-10-14 17:34:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 17:34:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2020-10-14 17:34:50,412 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 65 [2020-10-14 17:34:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:50,412 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2020-10-14 17:34:50,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:34:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2020-10-14 17:34:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 17:34:50,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:50,413 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:50,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 17:34:50,413 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash -338126050, now seen corresponding path program 14 times [2020-10-14 17:34:50,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:50,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734688454] [2020-10-14 17:34:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:50,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:53,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:55,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 17:34:55,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 17:34:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:34:55,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:55,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:34:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 17:34:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:56,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:56,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:56,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:56,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:56,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:56,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:56,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:56,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:56,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:56,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:56,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:56,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:56,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:34:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:56,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:56,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:56,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:56,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:56,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:56,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:56,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:34:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:56,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:56,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:56,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:56,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:56,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:56,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:56,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:34:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:56,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:56,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:56,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:56,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:56,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:56,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:56,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:34:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:56,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:56,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:56,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:56,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:56,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:34:56,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734688454] [2020-10-14 17:34:56,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:56,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:34:56,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805319096] [2020-10-14 17:34:56,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:34:56,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:56,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:34:56,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:34:56,410 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand 21 states. [2020-10-14 17:34:57,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:57,683 INFO L93 Difference]: Finished difference Result 147 states and 186 transitions. [2020-10-14 17:34:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:34:57,684 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-14 17:34:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:57,685 INFO L225 Difference]: With dead ends: 147 [2020-10-14 17:34:57,685 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 17:34:57,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:34:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 17:34:57,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 115. [2020-10-14 17:34:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 17:34:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 152 transitions. [2020-10-14 17:34:57,715 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 152 transitions. Word has length 65 [2020-10-14 17:34:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:57,715 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 152 transitions. [2020-10-14 17:34:57,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:34:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 152 transitions. [2020-10-14 17:34:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 17:34:57,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:57,716 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:57,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 17:34:57,717 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:57,717 INFO L82 PathProgramCache]: Analyzing trace with hash 725270686, now seen corresponding path program 15 times [2020-10-14 17:34:57,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:57,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989252113] [2020-10-14 17:34:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:57,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:57,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:00,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:02,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:02,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 17:35:02,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-10-14 17:35:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:35:02,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:02,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:35:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:35:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 17:35:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:03,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:03,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:03,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:03,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:03,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:03,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:03,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:35:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:03,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:03,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:03,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:03,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:35:03,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:03,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:03,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:35:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:03,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:03,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:03,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:03,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:03,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:03,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:03,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:03,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:35:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:03,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:03,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:03,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:03,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:03,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:35:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:03,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:03,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:03,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:03,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:03,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:03,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:03,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:35:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:03,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:03,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:03,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:03,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:03,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:03,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:35:03,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989252113] [2020-10-14 17:35:03,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:03,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:35:03,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668134631] [2020-10-14 17:35:03,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:35:03,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:03,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:35:03,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:35:03,719 INFO L87 Difference]: Start difference. First operand 115 states and 152 transitions. Second operand 22 states. [2020-10-14 17:35:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:05,631 INFO L93 Difference]: Finished difference Result 167 states and 214 transitions. [2020-10-14 17:35:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:35:05,633 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-10-14 17:35:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:05,634 INFO L225 Difference]: With dead ends: 167 [2020-10-14 17:35:05,634 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 17:35:05,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:35:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 17:35:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 115. [2020-10-14 17:35:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 17:35:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 152 transitions. [2020-10-14 17:35:05,667 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 152 transitions. Word has length 65 [2020-10-14 17:35:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:05,668 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 152 transitions. [2020-10-14 17:35:05,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:35:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 152 transitions. [2020-10-14 17:35:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 17:35:05,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:05,669 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:05,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 17:35:05,669 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:05,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2111474080, now seen corresponding path program 16 times [2020-10-14 17:35:05,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:05,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231263721] [2020-10-14 17:35:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:05,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:05,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 17:35:10,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 17:35:10,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:35:10,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:35:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:35:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 17:35:10,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:11,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:11,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:11,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:11,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:11,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:11,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:11,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:35:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:11,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:11,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:11,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:11,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:11,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:35:11,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:11,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:11,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:35:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:11,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:11,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:11,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:11,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:11,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:11,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:11,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:35:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:11,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:11,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:11,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:35:11,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:11,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:11,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:35:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:11,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:11,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:11,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:11,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:11,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:35:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:11,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:11,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:11,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:11,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:11,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:11,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:11,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:11,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:11,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:11,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:35:11,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231263721] [2020-10-14 17:35:11,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:11,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:35:11,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705126328] [2020-10-14 17:35:11,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:35:11,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:35:11,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:35:11,829 INFO L87 Difference]: Start difference. First operand 115 states and 152 transitions. Second operand 21 states. [2020-10-14 17:35:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:14,161 INFO L93 Difference]: Finished difference Result 121 states and 157 transitions. [2020-10-14 17:35:14,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:35:14,162 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-14 17:35:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:14,163 INFO L225 Difference]: With dead ends: 121 [2020-10-14 17:35:14,163 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 17:35:14,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:35:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 17:35:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 69. [2020-10-14 17:35:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 17:35:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2020-10-14 17:35:14,187 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 65 [2020-10-14 17:35:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:14,190 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2020-10-14 17:35:14,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:35:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2020-10-14 17:35:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 17:35:14,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:14,192 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:14,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 17:35:14,192 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1288995738, now seen corresponding path program 14 times [2020-10-14 17:35:14,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:14,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612591813] [2020-10-14 17:35:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:16,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:18,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:19,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:19,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 17:35:19,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 17:35:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:35:19,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:19,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:35:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 17:35:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:35:19,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:19,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:19,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:19,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:19,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:19,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:19,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:19,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:19,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:19,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:35:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:19,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:19,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:19,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:19,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:35:19,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:19,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:35:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:19,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:19,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:19,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:35:19,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:19,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:19,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:35:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:19,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:19,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:19,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:19,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 17:35:19,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:19,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:19,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:19,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:35:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:19,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:19,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:19,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:19,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:19,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:19,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:19,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:35:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:19,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:19,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:19,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:35:19,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:19,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 17:35:19,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612591813] [2020-10-14 17:35:19,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:19,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:35:19,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315072435] [2020-10-14 17:35:19,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:35:19,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:19,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:35:19,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:35:19,328 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand 10 states. [2020-10-14 17:35:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:19,716 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2020-10-14 17:35:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:35:19,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-14 17:35:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:19,719 INFO L225 Difference]: With dead ends: 79 [2020-10-14 17:35:19,719 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 17:35:19,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:35:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 17:35:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 54. [2020-10-14 17:35:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 17:35:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-14 17:35:19,736 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 67 [2020-10-14 17:35:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:19,737 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-14 17:35:19,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:35:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-14 17:35:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 17:35:19,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:19,737 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:19,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 17:35:19,738 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:19,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:19,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1556877992, now seen corresponding path program 15 times [2020-10-14 17:35:19,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:19,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584376252] [2020-10-14 17:35:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:21,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:23,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:23,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:23,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:24,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:24,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:24,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 17:35:24,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 17:35:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:35:24,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:24,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:35:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:35:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 17:35:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:26,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:26,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:26,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:26,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:26,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:26,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:26,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:26,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:35:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:26,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:26,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:26,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:35:26,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:26,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:26,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:26,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 17:35:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:26,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:26,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:26,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:26,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:26,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:26,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:35:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:26,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:26,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:26,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:26,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:26,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:26,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:26,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:26,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:35:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:26,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:26,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:26,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:26,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:26,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:35:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:26,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:26,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:26,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:26,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:26,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:26,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:26,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:35:26,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584376252] [2020-10-14 17:35:26,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:26,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:35:26,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041845078] [2020-10-14 17:35:26,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:35:26,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:26,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:35:26,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:35:26,193 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 26 states. [2020-10-14 17:35:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:28,716 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2020-10-14 17:35:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:35:28,718 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 69 [2020-10-14 17:35:28,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:28,719 INFO L225 Difference]: With dead ends: 99 [2020-10-14 17:35:28,719 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 17:35:28,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:35:28,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 17:35:28,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2020-10-14 17:35:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 17:35:28,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2020-10-14 17:35:28,740 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 69 [2020-10-14 17:35:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:28,740 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2020-10-14 17:35:28,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:35:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2020-10-14 17:35:28,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 17:35:28,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:28,741 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:28,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 17:35:28,741 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:28,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:28,741 INFO L82 PathProgramCache]: Analyzing trace with hash 932650970, now seen corresponding path program 17 times [2020-10-14 17:35:28,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:28,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530806051] [2020-10-14 17:35:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:32,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:32,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:33,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:33,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:33,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 17:35:33,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 17:35:33,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:35:33,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:33,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:35:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:35:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 17:35:33,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:34,810 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38