/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-examples/standard_compare_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:26:31,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:26:31,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:26:31,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:26:31,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:26:31,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:26:31,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:26:31,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:26:31,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:26:31,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:26:31,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:26:31,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:26:31,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:26:31,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:26:31,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:26:31,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:26:31,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:26:31,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:26:31,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:26:31,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:26:31,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:26:31,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:26:31,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:26:31,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:26:31,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:26:31,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:26:31,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:26:31,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:26:31,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:26:31,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:26:31,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:26:31,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:26:31,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:26:31,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:26:31,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:26:31,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:26:31,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:26:31,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:26:31,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:26:31,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:26:31,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:26:31,825 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 [2020-10-13 23:26:31,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:26:31,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:26:31,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:26:31,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:26:31,849 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:26:31,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:26:31,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:26:31,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:26:31,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:26:31,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:26:31,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:26:31,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:26:31,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:26:31,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:26:31,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:26:31,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:26:31,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:26:31,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:26:31,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:26:31,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:26:31,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:26:31,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:26:31,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:26:31,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:26:31,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:26:31,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:26:31,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:26:31,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:26:31,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:26:31,854 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:26:32,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:26:32,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:26:32,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:26:32,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:26:32,188 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:26:32,189 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_compare_ground.i [2020-10-13 23:26:32,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af82ce9f7/80f542e0bd2f43f697ffa48c4fce918f/FLAGbc17e8c78 [2020-10-13 23:26:32,634 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:26:32,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_compare_ground.i [2020-10-13 23:26:32,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af82ce9f7/80f542e0bd2f43f697ffa48c4fce918f/FLAGbc17e8c78 [2020-10-13 23:26:33,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af82ce9f7/80f542e0bd2f43f697ffa48c4fce918f [2020-10-13 23:26:33,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:26:33,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:26:33,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:26:33,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:26:33,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:26:33,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:26:33" (1/1) ... [2020-10-13 23:26:33,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc3fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33, skipping insertion in model container [2020-10-13 23:26:33,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:26:33" (1/1) ... [2020-10-13 23:26:33,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:26:33,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:26:33,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:26:33,372 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:26:33,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:26:33,421 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:26:33,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33 WrapperNode [2020-10-13 23:26:33,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:26:33,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:26:33,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:26:33,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:26:33,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33" (1/1) ... [2020-10-13 23:26:33,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33" (1/1) ... [2020-10-13 23:26:33,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33" (1/1) ... [2020-10-13 23:26:33,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33" (1/1) ... [2020-10-13 23:26:33,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33" (1/1) ... [2020-10-13 23:26:33,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33" (1/1) ... [2020-10-13 23:26:33,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33" (1/1) ... [2020-10-13 23:26:33,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:26:33,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:26:33,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:26:33,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:26:33,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33" (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 [2020-10-13 23:26:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:26:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:26:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:26:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:26:33,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:26:33,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:26:33,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:26:33,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:26:33,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:26:33,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:26:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:26:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:26:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:26:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:26:33,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:26:33,837 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:26:33,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:26:33 BoogieIcfgContainer [2020-10-13 23:26:33,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:26:33,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:26:33,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:26:33,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:26:33,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:26:33" (1/3) ... [2020-10-13 23:26:33,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57afa0a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:26:33, skipping insertion in model container [2020-10-13 23:26:33,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:33" (2/3) ... [2020-10-13 23:26:33,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57afa0a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:26:33, skipping insertion in model container [2020-10-13 23:26:33,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:26:33" (3/3) ... [2020-10-13 23:26:33,848 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_compare_ground.i [2020-10-13 23:26:33,858 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:26:33,864 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:26:33,878 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:26:33,900 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:26:33,901 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:26:33,901 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:26:33,901 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:26:33,901 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:26:33,901 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:26:33,901 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:26:33,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:26:33,919 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-13 23:26:33,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:26:33,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:33,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:33,927 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:33,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1983579869, now seen corresponding path program 1 times [2020-10-13 23:26:33,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:33,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441640277] [2020-10-13 23:26:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:34,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:34,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:34,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:26:34,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:26:34,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 23:26:34,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:34,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:26:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:26:34,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:34,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:34,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:34,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:34,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:26:34,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:34,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:26:34,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441640277] [2020-10-13 23:26:34,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:26:34,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:26:34,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525203274] [2020-10-13 23:26:34,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:26:34,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:34,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:26:34,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:26:34,276 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-10-13 23:26:34,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:34,480 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2020-10-13 23:26:34,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:26:34,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-13 23:26:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:34,489 INFO L225 Difference]: With dead ends: 48 [2020-10-13 23:26:34,489 INFO L226 Difference]: Without dead ends: 23 [2020-10-13 23:26:34,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:26:34,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-13 23:26:34,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-13 23:26:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-13 23:26:34,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-13 23:26:34,527 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2020-10-13 23:26:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:34,527 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-13 23:26:34,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:26:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-13 23:26:34,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:26:34,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:34,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:34,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:26:34,530 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:34,530 INFO L82 PathProgramCache]: Analyzing trace with hash -901393582, now seen corresponding path program 1 times [2020-10-13 23:26:34,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:34,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797025739] [2020-10-13 23:26:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:34,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:34,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:26:34,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:26:34,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-13 23:26:34,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:34,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:26:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:26:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:26:34,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:34,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:34,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:34,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:34,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:26:34,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:34,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:34,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:26:34,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797025739] [2020-10-13 23:26:34,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:26:34,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:26:34,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053126948] [2020-10-13 23:26:34,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:26:34,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:34,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:26:34,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:26:34,803 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-13 23:26:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:34,875 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-13 23:26:34,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:26:34,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 23:26:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:34,877 INFO L225 Difference]: With dead ends: 40 [2020-10-13 23:26:34,877 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 23:26:34,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:26:34,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 23:26:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-13 23:26:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 23:26:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-13 23:26:34,886 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-10-13 23:26:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:34,886 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-13 23:26:34,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:26:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-13 23:26:34,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 23:26:34,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:34,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:34,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:26:34,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:34,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:34,889 INFO L82 PathProgramCache]: Analyzing trace with hash 211155632, now seen corresponding path program 1 times [2020-10-13 23:26:34,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:34,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334098833] [2020-10-13 23:26:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:35,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:35,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 23:26:35,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:26:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-13 23:26:35,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:35,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:26:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:26:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:26:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:35,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:35,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:35,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:35,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:26:35,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:35,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:26:35,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334098833] [2020-10-13 23:26:35,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:26:35,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:26:35,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317045434] [2020-10-13 23:26:35,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:26:35,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:35,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:26:35,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:26:35,161 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2020-10-13 23:26:35,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:35,219 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-13 23:26:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:26:35,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-13 23:26:35,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:35,221 INFO L225 Difference]: With dead ends: 38 [2020-10-13 23:26:35,221 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:26:35,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:26:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:26:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-13 23:26:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 23:26:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-13 23:26:35,228 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-10-13 23:26:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:35,228 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-13 23:26:35,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:26:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-13 23:26:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 23:26:35,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:35,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:35,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:26:35,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:35,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1966133540, now seen corresponding path program 1 times [2020-10-13 23:26:35,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:35,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268861720] [2020-10-13 23:26:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:35,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:35,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:35,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:26:35,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:35,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-13 23:26:35,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:35,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:26:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:26:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 23:26:35,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:35,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:35,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:35,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:35,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:35,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:26:35,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:35,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:26:35,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268861720] [2020-10-13 23:26:35,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:35,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:26:35,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972278485] [2020-10-13 23:26:35,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:26:35,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:35,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:26:35,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:26:35,847 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-10-13 23:26:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:35,915 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2020-10-13 23:26:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:26:35,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 23:26:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:35,917 INFO L225 Difference]: With dead ends: 41 [2020-10-13 23:26:35,917 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:26:35,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:26:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:26:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-13 23:26:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:26:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 23:26:35,925 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2020-10-13 23:26:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:35,925 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 23:26:35,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:26:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 23:26:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 23:26:35,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:35,927 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] [2020-10-13 23:26:35,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:26:35,927 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:35,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:35,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1303214896, now seen corresponding path program 2 times [2020-10-13 23:26:35,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:35,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788919881] [2020-10-13 23:26:35,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:35,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:35,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:36,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:36,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:26:36,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-13 23:26:36,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:36,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:26:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:26:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:26:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:36,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:36,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:36,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:36,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:36,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:26:36,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788919881] [2020-10-13 23:26:36,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:36,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:26:36,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567088979] [2020-10-13 23:26:36,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:26:36,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:36,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:26:36,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:26:36,633 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-10-13 23:26:36,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:36,698 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-13 23:26:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:26:36,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-13 23:26:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:36,700 INFO L225 Difference]: With dead ends: 44 [2020-10-13 23:26:36,700 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:26:36,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:26:36,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:26:36,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-13 23:26:36,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:26:36,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-13 23:26:36,706 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 23 [2020-10-13 23:26:36,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:36,707 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-13 23:26:36,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:26:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-13 23:26:36,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:26:36,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:36,708 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] [2020-10-13 23:26:36,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:26:36,709 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:36,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1489100380, now seen corresponding path program 3 times [2020-10-13 23:26:36,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:36,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429638457] [2020-10-13 23:26:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:37,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:37,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:26:37,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:37,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-10-13 23:26:37,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:37,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:26:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:26:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:26:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:37,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:37,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:37,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:37,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:37,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:37,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 23:26:37,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429638457] [2020-10-13 23:26:37,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:37,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:26:37,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142444502] [2020-10-13 23:26:37,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:26:37,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:37,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:26:37,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:26:37,544 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-13 23:26:37,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:37,613 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-13 23:26:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:26:37,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-13 23:26:37,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:37,615 INFO L225 Difference]: With dead ends: 56 [2020-10-13 23:26:37,615 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:26:37,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:26:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:26:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 23:26:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:26:37,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-13 23:26:37,621 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 26 [2020-10-13 23:26:37,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:37,622 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-13 23:26:37,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:26:37,622 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-13 23:26:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 23:26:37,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:37,623 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] [2020-10-13 23:26:37,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:26:37,624 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1742606398, now seen corresponding path program 4 times [2020-10-13 23:26:37,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:37,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978582862] [2020-10-13 23:26:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:37,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:38,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:38,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:26:38,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:38,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-13 23:26:38,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:38,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:38,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:26:38,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:26:38,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:26:38,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:38,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:38,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:38,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:38,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:26:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:38,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:38,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 23:26:38,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978582862] [2020-10-13 23:26:38,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:38,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:26:38,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694326807] [2020-10-13 23:26:38,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:26:38,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:38,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:26:38,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:26:38,763 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-10-13 23:26:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:38,860 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-10-13 23:26:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:26:38,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-13 23:26:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:38,861 INFO L225 Difference]: With dead ends: 49 [2020-10-13 23:26:38,862 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:26:38,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:26:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:26:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-13 23:26:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 23:26:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-13 23:26:38,872 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 28 [2020-10-13 23:26:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:38,873 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-13 23:26:38,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:26:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-13 23:26:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 23:26:38,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:38,874 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:38,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:26:38,875 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:38,878 INFO L82 PathProgramCache]: Analyzing trace with hash 341018254, now seen corresponding path program 5 times [2020-10-13 23:26:38,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:38,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362996497] [2020-10-13 23:26:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:38,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:40,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:40,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 23:26:40,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:40,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1582 [2020-10-13 23:26:40,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:40,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:26:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:26:40,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:26:40,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:40,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:40,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:40,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:40,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:40,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:40,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:40,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:40,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:26:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 23:26:40,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362996497] [2020-10-13 23:26:40,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:40,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:26:40,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861889336] [2020-10-13 23:26:40,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:26:40,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:40,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:26:40,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:26:40,530 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 6 states. [2020-10-13 23:26:40,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:40,607 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-10-13 23:26:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:26:40,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-13 23:26:40,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:40,609 INFO L225 Difference]: With dead ends: 64 [2020-10-13 23:26:40,609 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 23:26:40,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:26:40,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 23:26:40,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-13 23:26:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 23:26:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-13 23:26:40,620 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 31 [2020-10-13 23:26:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:40,622 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-13 23:26:40,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:26:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-13 23:26:40,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 23:26:40,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:40,624 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:40,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:26:40,625 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:40,625 INFO L82 PathProgramCache]: Analyzing trace with hash 903164396, now seen corresponding path program 6 times [2020-10-13 23:26:40,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:40,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747860964] [2020-10-13 23:26:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:40,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:42,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:42,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 23:26:42,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2079 [2020-10-13 23:26:42,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:42,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:26:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:26:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:26:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:42,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:42,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:26:42,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747860964] [2020-10-13 23:26:42,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:42,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:26:42,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043110637] [2020-10-13 23:26:42,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:26:42,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:42,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:26:42,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:26:42,795 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 8 states. [2020-10-13 23:26:42,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:42,894 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-10-13 23:26:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:26:42,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-13 23:26:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:42,897 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:26:42,897 INFO L226 Difference]: Without dead ends: 43 [2020-10-13 23:26:42,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:26:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-13 23:26:42,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-10-13 23:26:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:26:42,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-13 23:26:42,903 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 33 [2020-10-13 23:26:42,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:42,903 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-13 23:26:42,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:26:42,904 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-13 23:26:42,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 23:26:42,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:42,905 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:42,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:26:42,905 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:42,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:42,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2118901280, now seen corresponding path program 7 times [2020-10-13 23:26:42,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:42,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238944094] [2020-10-13 23:26:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:43,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:45,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:45,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:26:45,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2554 [2020-10-13 23:26:45,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:45,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:45,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:26:45,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:26:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 23:26:45,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:45,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:45,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:45,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:45,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:45,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:45,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:45,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:45,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:45,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:45,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:26:45,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238944094] [2020-10-13 23:26:45,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:45,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:26:45,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835967761] [2020-10-13 23:26:45,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:26:45,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:45,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:26:45,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:26:45,548 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 9 states. [2020-10-13 23:26:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:45,634 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-10-13 23:26:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:26:45,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-13 23:26:45,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:45,635 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:26:45,635 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:26:45,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:26:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:26:45,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-13 23:26:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 23:26:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-13 23:26:45,641 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 36 [2020-10-13 23:26:45,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:45,642 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-13 23:26:45,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:26:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-13 23:26:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 23:26:45,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:45,643 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:45,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:26:45,643 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:45,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:45,643 INFO L82 PathProgramCache]: Analyzing trace with hash 677205356, now seen corresponding path program 8 times [2020-10-13 23:26:45,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:45,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337260908] [2020-10-13 23:26:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:45,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:48,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:48,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 23:26:48,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2390 [2020-10-13 23:26:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:48,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:26:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:26:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:26:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:48,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:48,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:48,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:48,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:48,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:48,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-13 23:26:48,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337260908] [2020-10-13 23:26:48,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:48,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:26:48,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416613226] [2020-10-13 23:26:48,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:26:48,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:48,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:26:48,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:26:48,099 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 7 states. [2020-10-13 23:26:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:48,166 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-10-13 23:26:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:26:48,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-13 23:26:48,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:48,168 INFO L225 Difference]: With dead ends: 78 [2020-10-13 23:26:48,168 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 23:26:48,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:26:48,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 23:26:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-13 23:26:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 23:26:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-13 23:26:48,174 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 39 [2020-10-13 23:26:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:48,174 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-13 23:26:48,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:26:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-13 23:26:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 23:26:48,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:48,175 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:48,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:26:48,176 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:48,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1613021898, now seen corresponding path program 9 times [2020-10-13 23:26:48,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:48,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204172322] [2020-10-13 23:26:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:48,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:52,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:52,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 23:26:52,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3882 [2020-10-13 23:26:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:52,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:26:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:26:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 23:26:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:52,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:52,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:52,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:52,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:52,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:52,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:52,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-13 23:26:52,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204172322] [2020-10-13 23:26:52,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:52,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:26:52,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617205396] [2020-10-13 23:26:52,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:26:52,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:52,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:26:52,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:26:52,242 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 10 states. [2020-10-13 23:26:52,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:52,482 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-10-13 23:26:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:26:52,483 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-13 23:26:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:52,489 INFO L225 Difference]: With dead ends: 78 [2020-10-13 23:26:52,489 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:26:52,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:26:52,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:26:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-13 23:26:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 23:26:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-10-13 23:26:52,514 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 41 [2020-10-13 23:26:52,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:52,515 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-10-13 23:26:52,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:26:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-10-13 23:26:52,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 23:26:52,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:52,519 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:52,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:26:52,519 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:52,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1747035404, now seen corresponding path program 1 times [2020-10-13 23:26:52,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:52,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686784166] [2020-10-13 23:26:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:54,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:54,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 23:26:54,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1589 [2020-10-13 23:26:54,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:54,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:26:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:26:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 23:26:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:54,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:54,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:54,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:54,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-13 23:26:54,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686784166] [2020-10-13 23:26:54,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:26:54,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:26:54,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515566058] [2020-10-13 23:26:54,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:26:54,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:54,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:26:54,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:26:54,157 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 4 states. [2020-10-13 23:26:54,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:54,202 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2020-10-13 23:26:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:26:54,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-13 23:26:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:54,206 INFO L225 Difference]: With dead ends: 101 [2020-10-13 23:26:54,206 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 23:26:54,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:26:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 23:26:54,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-13 23:26:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-13 23:26:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-13 23:26:54,217 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 41 [2020-10-13 23:26:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:54,218 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-13 23:26:54,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:26:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-13 23:26:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 23:26:54,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:54,219 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:54,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:26:54,223 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:54,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:54,223 INFO L82 PathProgramCache]: Analyzing trace with hash 248020318, now seen corresponding path program 1 times [2020-10-13 23:26:54,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:54,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931606087] [2020-10-13 23:26:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:57,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:57,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 23:26:57,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:57,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3385 [2020-10-13 23:26:57,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:57,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:26:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:26:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:26:57,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:26:57,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:57,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:57,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:57,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:57,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:57,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:57,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:57,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 23:26:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:57,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:57,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:26:57,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:57,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:57,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:57,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:26:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 23:26:57,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931606087] [2020-10-13 23:26:57,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:57,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:26:57,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6456874] [2020-10-13 23:26:57,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:26:57,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:57,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:26:57,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:26:57,701 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 10 states. [2020-10-13 23:26:57,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:57,761 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2020-10-13 23:26:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:26:57,761 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-13 23:26:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:57,762 INFO L225 Difference]: With dead ends: 74 [2020-10-13 23:26:57,762 INFO L226 Difference]: Without dead ends: 57 [2020-10-13 23:26:57,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:26:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-13 23:26:57,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-13 23:26:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:26:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-13 23:26:57,768 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 49 [2020-10-13 23:26:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:57,768 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-13 23:26:57,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:26:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-13 23:26:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 23:26:57,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:57,770 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:57,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:26:57,770 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:57,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1409661718, now seen corresponding path program 2 times [2020-10-13 23:26:57,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:57,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508320307] [2020-10-13 23:26:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:57,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:00,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:00,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 23:27:00,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:00,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2875 [2020-10-13 23:27:00,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:00,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:00,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:27:00,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:27:00,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:27:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:00,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:00,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:00,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:00,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:00,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:00,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:27:00,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:27:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:00,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:00,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:00,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:00,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:00,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:00,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:00,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:27:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 23:27:00,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508320307] [2020-10-13 23:27:00,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:00,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:27:00,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953049581] [2020-10-13 23:27:00,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:27:00,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:00,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:27:00,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:27:00,737 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 8 states. [2020-10-13 23:27:00,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:00,815 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2020-10-13 23:27:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:27:00,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-13 23:27:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:00,817 INFO L225 Difference]: With dead ends: 98 [2020-10-13 23:27:00,818 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 23:27:00,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:27:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 23:27:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 23:27:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 23:27:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-10-13 23:27:00,826 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 52 [2020-10-13 23:27:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:00,826 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-10-13 23:27:00,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:27:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-10-13 23:27:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:27:00,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:00,828 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:00,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:27:00,829 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1779992968, now seen corresponding path program 3 times [2020-10-13 23:27:00,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:00,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032287571] [2020-10-13 23:27:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:05,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:05,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 23:27:05,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:27:05,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:05,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:27:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:27:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 23:27:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:05,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:05,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:05,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:05,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:05,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:05,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:05,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:05,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:05,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:05,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:27:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:05,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:05,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:05,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:05,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:05,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-13 23:27:05,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032287571] [2020-10-13 23:27:05,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:05,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:27:05,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596378366] [2020-10-13 23:27:05,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:27:05,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:05,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:27:05,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:27:05,927 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 11 states. [2020-10-13 23:27:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:06,009 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2020-10-13 23:27:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:27:06,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-13 23:27:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:06,011 INFO L225 Difference]: With dead ends: 79 [2020-10-13 23:27:06,011 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 23:27:06,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:27:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 23:27:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-13 23:27:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 23:27:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-10-13 23:27:06,016 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 54 [2020-10-13 23:27:06,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:06,016 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-10-13 23:27:06,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:27:06,017 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-10-13 23:27:06,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 23:27:06,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:06,017 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:06,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:27:06,018 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:06,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2124155972, now seen corresponding path program 4 times [2020-10-13 23:27:06,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:06,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817050839] [2020-10-13 23:27:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:11,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:11,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 23:27:11,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:27:11,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:11,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:27:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:27:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:27:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:11,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:11,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:11,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:11,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:11,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:11,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:11,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:11,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:11,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:27:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:11,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:11,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:11,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:11,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:11,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:11,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:11,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:11,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:11,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 23:27:11,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817050839] [2020-10-13 23:27:11,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:11,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:27:11,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500810106] [2020-10-13 23:27:11,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:27:11,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:11,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:27:11,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:27:11,096 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 9 states. [2020-10-13 23:27:11,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:11,161 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-10-13 23:27:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:27:11,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-13 23:27:11,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:11,162 INFO L225 Difference]: With dead ends: 106 [2020-10-13 23:27:11,163 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 23:27:11,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:27:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 23:27:11,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-13 23:27:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 23:27:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-10-13 23:27:11,168 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 57 [2020-10-13 23:27:11,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:11,168 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-10-13 23:27:11,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:27:11,169 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-10-13 23:27:11,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 23:27:11,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:11,170 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:11,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:27:11,170 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:11,171 INFO L82 PathProgramCache]: Analyzing trace with hash 93980058, now seen corresponding path program 5 times [2020-10-13 23:27:11,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:11,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246546393] [2020-10-13 23:27:11,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:11,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:16,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:16,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 23:27:16,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:27:16,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:16,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:27:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:27:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 23:27:16,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:16,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:16,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:16,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:27:16,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:16,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:27:16,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 23:27:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:16,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:16,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:16,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:27:16,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:16,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:16,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:27:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 23:27:16,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246546393] [2020-10-13 23:27:16,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:16,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:27:16,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451454341] [2020-10-13 23:27:16,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:27:16,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:16,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:27:16,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:27:16,387 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 12 states. [2020-10-13 23:27:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:16,764 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2020-10-13 23:27:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:27:16,764 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-13 23:27:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:16,765 INFO L225 Difference]: With dead ends: 74 [2020-10-13 23:27:16,765 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 23:27:16,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:27:16,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 23:27:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-13 23:27:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 23:27:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-13 23:27:16,777 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 59 [2020-10-13 23:27:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:16,777 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-13 23:27:16,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:27:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-13 23:27:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 23:27:16,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:16,778 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:16,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:27:16,779 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:16,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:16,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1955205074, now seen corresponding path program 6 times [2020-10-13 23:27:16,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:16,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903936672] [2020-10-13 23:27:16,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:17,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:21,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:21,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 23:27:21,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:27:21,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:21,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:27:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:27:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:27:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:21,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:21,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:21,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:21,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:21,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:21,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:21,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:21,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 23:27:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:21,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:21,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:21,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:21,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:21,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:21,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:21,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:27:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:21,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:21,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:21,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:21,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:21,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:21,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 23:27:21,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903936672] [2020-10-13 23:27:21,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:21,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:27:21,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740880513] [2020-10-13 23:27:21,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:27:21,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:21,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:27:21,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:27:21,901 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 12 states. [2020-10-13 23:27:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:22,021 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2020-10-13 23:27:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:27:22,022 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-13 23:27:22,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:22,023 INFO L225 Difference]: With dead ends: 100 [2020-10-13 23:27:22,023 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 23:27:22,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:27:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 23:27:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-13 23:27:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:27:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-13 23:27:22,030 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 67 [2020-10-13 23:27:22,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:22,030 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-13 23:27:22,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:27:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-13 23:27:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 23:27:22,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:22,035 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:22,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:27:22,035 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:22,035 INFO L82 PathProgramCache]: Analyzing trace with hash -326196242, now seen corresponding path program 7 times [2020-10-13 23:27:22,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:22,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955979154] [2020-10-13 23:27:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:27,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:27,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 23:27:27,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:27:27,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:27,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:27:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:27:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 23:27:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:27,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:27,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:27,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:27,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:27,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:27,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:27,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:27,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:27,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:27:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:27:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:27,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:27,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:27,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:27,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:27,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:27,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:27,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:27,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:27:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:27:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:27,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:27,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:27,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:27,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:27,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:27:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 4 proven. 117 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 23:27:27,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955979154] [2020-10-13 23:27:27,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:27,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:27:27,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756708978] [2020-10-13 23:27:27,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:27:27,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:27,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:27:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:27:27,231 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 13 states. [2020-10-13 23:27:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:27,354 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2020-10-13 23:27:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:27:27,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2020-10-13 23:27:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:27,356 INFO L225 Difference]: With dead ends: 103 [2020-10-13 23:27:27,356 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 23:27:27,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:27:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 23:27:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-13 23:27:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 23:27:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-10-13 23:27:27,372 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 70 [2020-10-13 23:27:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:27,373 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-10-13 23:27:27,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:27:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-10-13 23:27:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 23:27:27,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:27,376 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:27,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:27:27,376 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash 640440366, now seen corresponding path program 8 times [2020-10-13 23:27:27,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:27,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231565203] [2020-10-13 23:27:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:27,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:28,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 23:27:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:27:32,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:32,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:27:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:27:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:27:32,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:32,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:32,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:32,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:32,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:32,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:32,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:32,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:32,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:32,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:27:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:32,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:32,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:32,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:32,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:32,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:32,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:32,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:27:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:32,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:32,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:32,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:32,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:32,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:32,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:32,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-13 23:27:32,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231565203] [2020-10-13 23:27:32,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:32,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:27:32,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380652923] [2020-10-13 23:27:32,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:27:32,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:32,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:27:32,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:27:32,481 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 10 states. [2020-10-13 23:27:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:32,554 INFO L93 Difference]: Finished difference Result 136 states and 140 transitions. [2020-10-13 23:27:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:27:32,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-13 23:27:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:32,555 INFO L225 Difference]: With dead ends: 136 [2020-10-13 23:27:32,555 INFO L226 Difference]: Without dead ends: 79 [2020-10-13 23:27:32,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:27:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-13 23:27:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-13 23:27:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-13 23:27:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-13 23:27:32,567 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 73 [2020-10-13 23:27:32,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:32,568 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-13 23:27:32,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:27:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-13 23:27:32,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 23:27:32,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:32,569 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:32,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:27:32,570 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:32,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:32,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1183912436, now seen corresponding path program 9 times [2020-10-13 23:27:32,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:32,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394915131] [2020-10-13 23:27:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:32,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:34,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:37,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:37,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:27:37,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:37,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:27:37,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:37,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:37,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:27:37,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:27:37,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 23:27:37,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:37,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:37,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:37,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:37,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:37,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:37,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:37,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:37,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:37,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:37,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:27:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:37,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:37,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:37,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:37,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:37,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:37,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:27:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:37,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:37,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:37,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:37,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:37,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:37,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 23:27:37,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394915131] [2020-10-13 23:27:37,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:37,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:27:37,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095177652] [2020-10-13 23:27:37,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:27:37,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:37,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:27:37,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:27:37,767 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 14 states. [2020-10-13 23:27:38,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:38,169 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-10-13 23:27:38,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:27:38,170 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 75 [2020-10-13 23:27:38,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:38,172 INFO L225 Difference]: With dead ends: 90 [2020-10-13 23:27:38,172 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 23:27:38,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:27:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 23:27:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-13 23:27:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 23:27:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-10-13 23:27:38,184 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 75 [2020-10-13 23:27:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:38,185 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-10-13 23:27:38,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:27:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-10-13 23:27:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 23:27:38,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:38,186 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:38,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:27:38,186 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:38,186 INFO L82 PathProgramCache]: Analyzing trace with hash 912017056, now seen corresponding path program 10 times [2020-10-13 23:27:38,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:38,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543398948] [2020-10-13 23:27:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:38,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:43,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:43,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 23:27:43,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:27:43,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:43,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:27:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:27:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:27:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:43,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:43,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:43,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:43,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:43,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:43,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:43,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:43,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:43,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:27:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:43,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:43,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:43,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:43,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:43,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:43,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:43,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:43,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:43,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:43,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:43,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:27:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:43,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:43,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:43,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:43,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:43,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:27:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:43,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:43,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:43,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:43,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:43,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 6 proven. 145 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-13 23:27:43,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543398948] [2020-10-13 23:27:43,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:43,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:27:43,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749675851] [2020-10-13 23:27:43,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:27:43,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:43,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:27:43,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:27:43,343 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 14 states. [2020-10-13 23:27:43,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:43,451 INFO L93 Difference]: Finished difference Result 124 states and 127 transitions. [2020-10-13 23:27:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:27:43,451 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-13 23:27:43,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:43,452 INFO L225 Difference]: With dead ends: 124 [2020-10-13 23:27:43,452 INFO L226 Difference]: Without dead ends: 91 [2020-10-13 23:27:43,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:27:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-13 23:27:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-10-13 23:27:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:27:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-13 23:27:43,458 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 83 [2020-10-13 23:27:43,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:43,459 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-13 23:27:43,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:27:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-13 23:27:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:27:43,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:43,460 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:43,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:27:43,460 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:43,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:43,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1155876324, now seen corresponding path program 11 times [2020-10-13 23:27:43,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:43,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563049964] [2020-10-13 23:27:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:43,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:48,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 23:27:48,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:27:48,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:48,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:27:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:27:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:27:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:48,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:48,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:48,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:48,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:48,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:48,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:27:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:48,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:48,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:48,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:48,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:48,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:27:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:48,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:48,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:48,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:48,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:48,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:48,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 23:27:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:48,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:48,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:48,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:48,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:48,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2020-10-13 23:27:48,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563049964] [2020-10-13 23:27:48,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:48,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:27:48,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665314092] [2020-10-13 23:27:48,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:27:48,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:48,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:27:48,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:27:48,561 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 11 states. [2020-10-13 23:27:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:48,661 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2020-10-13 23:27:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:27:48,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2020-10-13 23:27:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:48,663 INFO L225 Difference]: With dead ends: 160 [2020-10-13 23:27:48,663 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 23:27:48,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:27:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 23:27:48,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 23:27:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:27:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-13 23:27:48,671 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 86 [2020-10-13 23:27:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:48,672 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-13 23:27:48,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:27:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-13 23:27:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 23:27:48,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:48,673 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:48,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:27:48,673 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:48,673 INFO L82 PathProgramCache]: Analyzing trace with hash -2121160506, now seen corresponding path program 12 times [2020-10-13 23:27:48,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:48,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128397875] [2020-10-13 23:27:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:48,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:50,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 23:27:53,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:53,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:27:53,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:27:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:27:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 23:27:53,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:27:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:53,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:53,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:53,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:53,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:53,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:27:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:53,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:53,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:53,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:53,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:53,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:53,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:27:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:53,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:53,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:53,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 23:27:53,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128397875] [2020-10-13 23:27:53,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:53,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:27:53,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185249120] [2020-10-13 23:27:53,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:27:53,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:53,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:27:53,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:27:53,929 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 16 states. [2020-10-13 23:27:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:54,448 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2020-10-13 23:27:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:27:54,449 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-10-13 23:27:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:54,450 INFO L225 Difference]: With dead ends: 103 [2020-10-13 23:27:54,451 INFO L226 Difference]: Without dead ends: 101 [2020-10-13 23:27:54,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:27:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-13 23:27:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-10-13 23:27:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:27:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-13 23:27:54,457 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 88 [2020-10-13 23:27:54,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:54,458 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-13 23:27:54,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:27:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-13 23:27:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:27:54,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:54,459 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:54,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:27:54,460 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:54,460 INFO L82 PathProgramCache]: Analyzing trace with hash 786278234, now seen corresponding path program 13 times [2020-10-13 23:27:54,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:54,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240280574] [2020-10-13 23:27:54,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:54,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:59,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:59,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 23:27:59,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:27:59,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:59,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:27:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:27:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 23:27:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:59,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:59,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:59,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:59,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:59,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:59,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:59,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:59,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:59,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:27:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:59,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:59,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:59,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:59,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:59,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:59,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:59,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:27:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:59,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:59,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:59,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:59,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:59,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:59,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:27:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:59,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:59,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:59,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:59,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:59,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:27:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:59,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:59,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:59,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:59,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:59,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 8 proven. 176 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-13 23:27:59,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240280574] [2020-10-13 23:27:59,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:59,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:27:59,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162928070] [2020-10-13 23:27:59,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:27:59,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:59,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:27:59,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:27:59,616 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 15 states. [2020-10-13 23:27:59,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:59,736 INFO L93 Difference]: Finished difference Result 145 states and 148 transitions. [2020-10-13 23:27:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:27:59,737 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2020-10-13 23:27:59,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:59,738 INFO L225 Difference]: With dead ends: 145 [2020-10-13 23:27:59,738 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 23:27:59,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:27:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 23:27:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-13 23:27:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 23:27:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2020-10-13 23:27:59,746 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 96 [2020-10-13 23:27:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:59,746 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2020-10-13 23:27:59,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:27:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2020-10-13 23:27:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 23:27:59,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:59,747 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:59,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:27:59,748 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:59,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:59,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2124492946, now seen corresponding path program 14 times [2020-10-13 23:27:59,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:59,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479939973] [2020-10-13 23:27:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:59,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 23:28:04,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:28:04,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:28:04,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:28:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:28:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:28:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:04,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:04,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:04,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:28:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:04,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:04,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:28:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:04,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:04,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:04,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:28:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:04,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:04,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:04,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:28:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:04,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 8 proven. 210 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-13 23:28:04,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479939973] [2020-10-13 23:28:04,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:04,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:28:04,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747868315] [2020-10-13 23:28:04,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:28:04,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:04,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:28:04,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:28:04,923 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand 16 states. [2020-10-13 23:28:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:05,052 INFO L93 Difference]: Finished difference Result 148 states and 151 transitions. [2020-10-13 23:28:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:28:05,053 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-10-13 23:28:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:05,054 INFO L225 Difference]: With dead ends: 148 [2020-10-13 23:28:05,054 INFO L226 Difference]: Without dead ends: 107 [2020-10-13 23:28:05,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:28:05,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-13 23:28:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-10-13 23:28:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 23:28:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-13 23:28:05,061 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 99 [2020-10-13 23:28:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:05,061 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-13 23:28:05,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:28:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-13 23:28:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 23:28:05,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:05,063 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:05,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:28:05,063 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1302430630, now seen corresponding path program 15 times [2020-10-13 23:28:05,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:05,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896540748] [2020-10-13 23:28:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:05,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:07,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:10,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:10,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:28:10,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:28:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 23:28:10,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:10,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:28:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:28:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:28:10,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:10,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:10,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:28:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:10,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:10,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:10,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:10,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:10,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:10,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 23:28:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:10,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:10,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:10,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:10,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:10,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:10,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:10,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:28:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:10,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:10,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 23:28:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:10,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:10,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:10,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:10,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:10,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-13 23:28:10,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896540748] [2020-10-13 23:28:10,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:10,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:28:10,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404909623] [2020-10-13 23:28:10,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:28:10,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:10,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:28:10,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:28:10,203 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 12 states. [2020-10-13 23:28:10,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:10,297 INFO L93 Difference]: Finished difference Result 190 states and 194 transitions. [2020-10-13 23:28:10,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:28:10,298 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-10-13 23:28:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:10,299 INFO L225 Difference]: With dead ends: 190 [2020-10-13 23:28:10,300 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:28:10,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:28:10,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:28:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 23:28:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:28:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-13 23:28:10,307 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 102 [2020-10-13 23:28:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:10,308 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-13 23:28:10,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:28:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-13 23:28:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 23:28:10,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:10,309 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:10,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:28:10,309 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:10,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1409080124, now seen corresponding path program 16 times [2020-10-13 23:28:10,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:10,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777169477] [2020-10-13 23:28:10,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:15,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:15,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 23:28:15,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:28:15,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:28:15,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:15,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:15,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:28:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:28:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 23:28:15,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:15,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:15,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:15,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:15,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:15,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:15,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:28:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:15,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:15,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:15,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:15,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:15,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:15,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:28:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:15,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:15,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:15,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:15,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:15,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:15,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:28:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:15,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:15,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:15,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:15,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:15,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:15,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:15,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 23:28:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:15,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:15,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:15,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:15,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:15,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:15,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 8 proven. 247 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-13 23:28:15,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777169477] [2020-10-13 23:28:15,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:15,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:28:15,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077347628] [2020-10-13 23:28:15,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:28:15,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:15,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:28:15,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:28:15,490 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 17 states. [2020-10-13 23:28:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:15,614 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2020-10-13 23:28:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:28:15,616 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 104 [2020-10-13 23:28:15,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:15,617 INFO L225 Difference]: With dead ends: 153 [2020-10-13 23:28:15,618 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 23:28:15,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:28:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 23:28:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-10-13 23:28:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 23:28:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-10-13 23:28:15,633 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 104 [2020-10-13 23:28:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:15,633 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-10-13 23:28:15,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:28:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-10-13 23:28:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 23:28:15,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:15,636 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:15,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:28:15,636 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:15,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1756879216, now seen corresponding path program 17 times [2020-10-13 23:28:15,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:15,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68644661] [2020-10-13 23:28:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:20,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:20,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 23:28:20,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:28:20,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:28:20,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:20,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:28:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:28:20,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:28:20,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:20,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:20,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:20,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:20,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:20,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:20,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:20,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:28:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:20,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:20,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:20,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:20,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:20,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:20,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:20,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:28:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:20,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:20,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:20,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:20,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:20,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:20,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:20,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:28:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:20,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:20,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:20,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:20,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:20,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:20,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:20,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:20,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:28:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:20,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:20,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:20,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:20,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:20,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:20,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:20,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 8 proven. 81 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-13 23:28:20,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68644661] [2020-10-13 23:28:20,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:20,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:28:20,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575500256] [2020-10-13 23:28:20,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:28:20,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:20,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:28:20,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:28:20,763 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 13 states. [2020-10-13 23:28:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:20,872 INFO L93 Difference]: Finished difference Result 198 states and 202 transitions. [2020-10-13 23:28:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:28:20,872 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 107 [2020-10-13 23:28:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:20,873 INFO L225 Difference]: With dead ends: 198 [2020-10-13 23:28:20,873 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 23:28:20,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:28:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 23:28:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-10-13 23:28:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-13 23:28:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2020-10-13 23:28:20,888 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 107 [2020-10-13 23:28:20,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:20,888 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2020-10-13 23:28:20,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:28:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2020-10-13 23:28:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 23:28:20,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:20,889 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:20,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:28:20,890 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:20,890 INFO L82 PathProgramCache]: Analyzing trace with hash 51083214, now seen corresponding path program 18 times [2020-10-13 23:28:20,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:20,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153261641] [2020-10-13 23:28:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:25,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:25,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 23:28:25,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:28:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 23:28:25,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:25,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:28:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:28:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 23:28:25,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:26,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:26,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:26,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:26,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:26,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:26,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:26,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:28:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:26,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:26,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:26,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:26,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:26,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:26,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:26,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:28:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:26,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:26,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:26,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:26,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:26,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:28:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:26,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:26,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:26,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:26,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:26,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:26,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:28:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:26,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:26,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:26,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:26,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:26,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:26,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:26,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:26,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-13 23:28:26,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153261641] [2020-10-13 23:28:26,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:26,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:28:26,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209402840] [2020-10-13 23:28:26,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:28:26,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:26,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:28:26,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:28:26,233 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 18 states. [2020-10-13 23:28:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:26,880 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-10-13 23:28:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:28:26,880 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 109 [2020-10-13 23:28:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:26,882 INFO L225 Difference]: With dead ends: 124 [2020-10-13 23:28:26,882 INFO L226 Difference]: Without dead ends: 122 [2020-10-13 23:28:26,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:28:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-13 23:28:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-13 23:28:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 23:28:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2020-10-13 23:28:26,890 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 109 [2020-10-13 23:28:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:26,891 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2020-10-13 23:28:26,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:28:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2020-10-13 23:28:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 23:28:26,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:26,892 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:26,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:28:26,893 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:26,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:26,893 INFO L82 PathProgramCache]: Analyzing trace with hash 524021346, now seen corresponding path program 19 times [2020-10-13 23:28:26,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:26,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093076521] [2020-10-13 23:28:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:26,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:31,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:31,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 23:28:31,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:28:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:28:31,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:31,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:28:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:28:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:28:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:32,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:32,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:32,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:32,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:32,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:32,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:32,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:32,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:32,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:32,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:32,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:32,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:28:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:32,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:32,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:32,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:32,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:28:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:32,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:32,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:32,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:32,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:32,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:32,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:32,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:28:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:32,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:32,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:32,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:32,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:32,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:32,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:28:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:32,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:32,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:32,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:32,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:32,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:32,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:32,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:32,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:28:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:32,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:32,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:32,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:32,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:32,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:32,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:32,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:32,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:32,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 10 proven. 287 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-13 23:28:32,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093076521] [2020-10-13 23:28:32,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:32,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:28:32,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481649106] [2020-10-13 23:28:32,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:28:32,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:32,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:28:32,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:28:32,137 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 18 states. [2020-10-13 23:28:32,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:32,272 INFO L93 Difference]: Finished difference Result 174 states and 177 transitions. [2020-10-13 23:28:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:28:32,272 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 117 [2020-10-13 23:28:32,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:32,274 INFO L225 Difference]: With dead ends: 174 [2020-10-13 23:28:32,274 INFO L226 Difference]: Without dead ends: 125 [2020-10-13 23:28:32,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:28:32,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-13 23:28:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2020-10-13 23:28:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-13 23:28:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-10-13 23:28:32,283 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 117 [2020-10-13 23:28:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:32,283 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-10-13 23:28:32,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:28:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-10-13 23:28:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 23:28:32,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:32,285 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:32,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:28:32,285 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:32,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:32,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2056110642, now seen corresponding path program 20 times [2020-10-13 23:28:32,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:32,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615184920] [2020-10-13 23:28:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:37,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:37,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 23:28:37,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:28:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 23:28:37,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:37,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:28:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:28:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:28:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:37,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:37,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:37,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:37,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:37,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:37,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:28:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:37,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:37,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:37,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:37,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:37,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:37,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:37,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:28:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:37,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:37,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:37,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:37,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:37,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 23:28:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:37,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:37,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:37,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:28:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:37,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:37,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:37,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:37,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:37,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:37,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:37,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 23:28:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:37,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:37,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:37,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:37,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-13 23:28:37,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615184920] [2020-10-13 23:28:37,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:37,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:28:37,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132266798] [2020-10-13 23:28:37,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:28:37,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:37,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:28:37,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:28:37,440 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 14 states. [2020-10-13 23:28:37,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:37,569 INFO L93 Difference]: Finished difference Result 222 states and 226 transitions. [2020-10-13 23:28:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:28:37,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 120 [2020-10-13 23:28:37,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:37,571 INFO L225 Difference]: With dead ends: 222 [2020-10-13 23:28:37,571 INFO L226 Difference]: Without dead ends: 126 [2020-10-13 23:28:37,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:28:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-13 23:28:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-13 23:28:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 23:28:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-10-13 23:28:37,583 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 120 [2020-10-13 23:28:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:37,583 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-10-13 23:28:37,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:28:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-10-13 23:28:37,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:28:37,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:37,587 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:37,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:28:37,587 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:37,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:37,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1358621844, now seen corresponding path program 21 times [2020-10-13 23:28:37,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:37,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670135102] [2020-10-13 23:28:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:37,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:37,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:42,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:42,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 23:28:42,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:28:42,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:28:42,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:42,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:28:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:28:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 23:28:42,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:42,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:42,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:42,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:42,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:42,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:42,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 23:28:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:42,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:42,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:42,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:42,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:42,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:42,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:42,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:42,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 23:28:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:42,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:42,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:42,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:42,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:42,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:42,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:28:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:42,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:42,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:42,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:42,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:42,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:42,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:42,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:28:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:42,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:42,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:42,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:42,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:42,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:42,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:42,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:28:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:42,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:42,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:42,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:42,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:42,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 10 proven. 330 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 23:28:42,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670135102] [2020-10-13 23:28:42,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:42,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:28:42,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837664178] [2020-10-13 23:28:42,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:28:42,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:42,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:28:42,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:28:42,828 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 19 states. [2020-10-13 23:28:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:42,945 INFO L93 Difference]: Finished difference Result 179 states and 182 transitions. [2020-10-13 23:28:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:28:42,946 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-13 23:28:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:42,947 INFO L225 Difference]: With dead ends: 179 [2020-10-13 23:28:42,948 INFO L226 Difference]: Without dead ends: 130 [2020-10-13 23:28:42,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:28:42,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-13 23:28:42,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-13 23:28:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-13 23:28:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-10-13 23:28:42,956 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 122 [2020-10-13 23:28:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:42,958 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-10-13 23:28:42,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:28:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-10-13 23:28:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 23:28:42,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:42,959 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:42,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:28:42,960 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:42,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:42,960 INFO L82 PathProgramCache]: Analyzing trace with hash 2073870016, now seen corresponding path program 22 times [2020-10-13 23:28:42,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:42,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273278123] [2020-10-13 23:28:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:42,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:47,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:47,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 23:28:47,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:28:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:28:47,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:47,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:28:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:28:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:28:47,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:48,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:48,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:28:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:28:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:48,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:28:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:48,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:28:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:48,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:28:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:48,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 10 proven. 376 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 23:28:48,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273278123] [2020-10-13 23:28:48,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:48,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:28:48,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296453734] [2020-10-13 23:28:48,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:28:48,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:48,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:28:48,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:28:48,198 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 20 states. [2020-10-13 23:28:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:48,364 INFO L93 Difference]: Finished difference Result 182 states and 185 transitions. [2020-10-13 23:28:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:28:48,364 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 125 [2020-10-13 23:28:48,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:48,366 INFO L225 Difference]: With dead ends: 182 [2020-10-13 23:28:48,366 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 23:28:48,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:28:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 23:28:48,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-10-13 23:28:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 23:28:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-10-13 23:28:48,375 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 125 [2020-10-13 23:28:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:48,375 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-10-13 23:28:48,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:28:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-10-13 23:28:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 23:28:48,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:48,376 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:48,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:28:48,377 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:48,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:48,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1595560684, now seen corresponding path program 23 times [2020-10-13 23:28:48,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:48,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32022462] [2020-10-13 23:28:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:53,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:28:53,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:28:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 23:28:53,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:53,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:28:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:28:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:28:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:53,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:53,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:53,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:53,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:53,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:53,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:28:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:53,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:53,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:53,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:53,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:53,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:53,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:53,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:53,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 23:28:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:53,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:53,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:53,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:53,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:53,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:28:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:53,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:53,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:53,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:53,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:53,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 23:28:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:53,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:53,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:53,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:53,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:53,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:53,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 23:28:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:53,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:53,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:53,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:53,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:53,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 10 proven. 121 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2020-10-13 23:28:53,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32022462] [2020-10-13 23:28:53,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:53,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:28:53,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874239995] [2020-10-13 23:28:53,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:28:53,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:28:53,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:28:53,560 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 15 states. [2020-10-13 23:28:53,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:53,672 INFO L93 Difference]: Finished difference Result 236 states and 240 transitions. [2020-10-13 23:28:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:28:53,672 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 128 [2020-10-13 23:28:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:53,673 INFO L225 Difference]: With dead ends: 236 [2020-10-13 23:28:53,673 INFO L226 Difference]: Without dead ends: 134 [2020-10-13 23:28:53,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:28:53,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-13 23:28:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-13 23:28:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-13 23:28:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2020-10-13 23:28:53,682 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 128 [2020-10-13 23:28:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:53,682 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2020-10-13 23:28:53,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:28:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2020-10-13 23:28:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 23:28:53,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:53,684 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:53,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:28:53,684 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1229236874, now seen corresponding path program 24 times [2020-10-13 23:28:53,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:53,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656397364] [2020-10-13 23:28:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:53,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:58,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 23:28:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:28:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:28:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:58,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:28:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:28:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 23:28:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:58,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:58,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:58,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:58,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:58,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:58,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:58,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:58,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 23:28:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:58,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:58,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:58,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:58,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:58,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:28:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:58,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:58,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:58,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:58,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:58,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:58,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:28:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:58,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:58,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:58,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:58,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:58,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:58,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:28:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:58,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:58,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:58,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:58,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:58,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:28:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:58,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:58,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:58,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:58,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:58,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:58,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 10 proven. 425 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-10-13 23:28:58,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656397364] [2020-10-13 23:28:58,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:58,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:28:58,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303215216] [2020-10-13 23:28:58,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:28:58,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:58,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:28:58,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:28:58,927 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 21 states. [2020-10-13 23:28:59,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:59,041 INFO L93 Difference]: Finished difference Result 187 states and 190 transitions. [2020-10-13 23:28:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:28:59,042 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 130 [2020-10-13 23:28:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:59,043 INFO L225 Difference]: With dead ends: 187 [2020-10-13 23:28:59,043 INFO L226 Difference]: Without dead ends: 138 [2020-10-13 23:28:59,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:28:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-13 23:28:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-13 23:28:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-13 23:28:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2020-10-13 23:28:59,057 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 130 [2020-10-13 23:28:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:59,057 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2020-10-13 23:28:59,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:28:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2020-10-13 23:28:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 23:28:59,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:59,059 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:59,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:28:59,059 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:59,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1837765278, now seen corresponding path program 25 times [2020-10-13 23:28:59,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:59,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452306389] [2020-10-13 23:28:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:04,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 23:29:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 23:29:04,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:04,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:29:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:29:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:29:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:04,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:04,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:04,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:04,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:04,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:04,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:04,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:29:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:04,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:04,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:04,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:04,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:04,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:04,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:29:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:04,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:04,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:04,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:04,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:04,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:04,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:29:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:04,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:04,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:04,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:04,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:04,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:04,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:29:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:04,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:04,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:29:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:04,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 10 proven. 144 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2020-10-13 23:29:04,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452306389] [2020-10-13 23:29:04,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:04,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:29:04,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471653787] [2020-10-13 23:29:04,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:29:04,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:04,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:29:04,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:29:04,240 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 16 states. [2020-10-13 23:29:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:04,363 INFO L93 Difference]: Finished difference Result 244 states and 248 transitions. [2020-10-13 23:29:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:29:04,363 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 133 [2020-10-13 23:29:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:04,364 INFO L225 Difference]: With dead ends: 244 [2020-10-13 23:29:04,365 INFO L226 Difference]: Without dead ends: 139 [2020-10-13 23:29:04,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:29:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-13 23:29:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2020-10-13 23:29:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-13 23:29:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-10-13 23:29:04,373 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 133 [2020-10-13 23:29:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:04,373 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-10-13 23:29:04,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:29:04,373 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-10-13 23:29:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 23:29:04,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:04,374 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:04,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:29:04,375 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:04,375 INFO L82 PathProgramCache]: Analyzing trace with hash 171464572, now seen corresponding path program 26 times [2020-10-13 23:29:04,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:04,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355678641] [2020-10-13 23:29:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:09,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:09,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 23:29:09,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 23:29:09,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:09,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:29:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:29:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 23:29:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:09,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:09,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:09,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:09,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:09,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:09,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:09,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:09,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:29:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:09,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:09,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:09,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:09,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:09,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:09,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:29:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:09,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:09,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:09,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:09,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:29:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:09,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:09,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:09,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:09,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:09,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:09,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:09,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:09,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:29:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:09,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:09,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:09,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:09,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:09,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:09,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:29:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:09,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:09,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:09,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:09,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:09,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 10 proven. 477 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-13 23:29:09,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355678641] [2020-10-13 23:29:09,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:09,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:29:09,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885235507] [2020-10-13 23:29:09,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:29:09,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:09,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:29:09,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:29:09,680 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 22 states. [2020-10-13 23:29:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:09,806 INFO L93 Difference]: Finished difference Result 192 states and 195 transitions. [2020-10-13 23:29:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 23:29:09,807 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 135 [2020-10-13 23:29:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:09,809 INFO L225 Difference]: With dead ends: 192 [2020-10-13 23:29:09,809 INFO L226 Difference]: Without dead ends: 143 [2020-10-13 23:29:09,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:29:09,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-13 23:29:09,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2020-10-13 23:29:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-13 23:29:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2020-10-13 23:29:09,817 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 135 [2020-10-13 23:29:09,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:09,817 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2020-10-13 23:29:09,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:29:09,817 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2020-10-13 23:29:09,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 23:29:09,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:09,819 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:09,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:29:09,819 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:09,819 INFO L82 PathProgramCache]: Analyzing trace with hash 232295128, now seen corresponding path program 27 times [2020-10-13 23:29:09,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:09,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563426525] [2020-10-13 23:29:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:14,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:14,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 23:29:14,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:14,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:29:14,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:14,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:29:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:29:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 23:29:14,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:15,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:15,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:15,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:15,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:15,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:15,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:15,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:29:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:15,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:15,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:15,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:15,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:15,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:15,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:15,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:15,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:15,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:15,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:15,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:29:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:15,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:15,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:15,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:15,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:15,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:15,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:29:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:15,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:15,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:15,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:15,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:15,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:15,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:15,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:15,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:29:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:15,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:15,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:15,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:15,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:15,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:15,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:15,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:15,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:15,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 23:29:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:15,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:15,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:15,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:15,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:15,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 10 proven. 532 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-13 23:29:15,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563426525] [2020-10-13 23:29:15,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:15,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:29:15,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463571995] [2020-10-13 23:29:15,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:29:15,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:15,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:29:15,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:29:15,128 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 23 states. [2020-10-13 23:29:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:15,239 INFO L93 Difference]: Finished difference Result 195 states and 198 transitions. [2020-10-13 23:29:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:29:15,240 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 138 [2020-10-13 23:29:15,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:15,241 INFO L225 Difference]: With dead ends: 195 [2020-10-13 23:29:15,241 INFO L226 Difference]: Without dead ends: 146 [2020-10-13 23:29:15,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:29:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-13 23:29:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2020-10-13 23:29:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-13 23:29:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2020-10-13 23:29:15,249 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 138 [2020-10-13 23:29:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:15,249 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions. [2020-10-13 23:29:15,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:29:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions. [2020-10-13 23:29:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 23:29:15,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:15,251 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:15,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:29:15,251 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:15,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:15,251 INFO L82 PathProgramCache]: Analyzing trace with hash -40809988, now seen corresponding path program 28 times [2020-10-13 23:29:15,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:15,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482557218] [2020-10-13 23:29:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:15,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:20,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:20,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 23:29:20,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-13 23:29:20,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:20,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:29:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:29:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:29:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:20,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:20,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:20,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:20,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:20,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:20,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:20,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:29:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:20,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:20,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:20,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:20,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:29:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:20,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:20,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:20,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:20,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:20,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:20,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:29:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:20,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:20,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:20,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:20,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:20,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:20,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:29:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:20,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:20,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:20,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:20,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:20,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:20,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:20,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:20,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 23:29:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:20,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:20,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:20,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:20,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:20,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 10 proven. 169 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2020-10-13 23:29:20,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482557218] [2020-10-13 23:29:20,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:20,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:29:20,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32453229] [2020-10-13 23:29:20,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:29:20,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:20,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:29:20,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:29:20,542 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand 17 states. [2020-10-13 23:29:20,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:20,649 INFO L93 Difference]: Finished difference Result 258 states and 262 transitions. [2020-10-13 23:29:20,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:29:20,649 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 141 [2020-10-13 23:29:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:20,651 INFO L225 Difference]: With dead ends: 258 [2020-10-13 23:29:20,651 INFO L226 Difference]: Without dead ends: 147 [2020-10-13 23:29:20,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:29:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-13 23:29:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-10-13 23:29:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-13 23:29:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2020-10-13 23:29:20,659 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 141 [2020-10-13 23:29:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:20,659 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2020-10-13 23:29:20,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:29:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2020-10-13 23:29:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 23:29:20,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:20,661 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:20,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:29:20,661 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:20,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:20,661 INFO L82 PathProgramCache]: Analyzing trace with hash -854339366, now seen corresponding path program 29 times [2020-10-13 23:29:20,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:20,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342501873] [2020-10-13 23:29:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:25,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:25,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 23:29:25,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:25,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:29:25,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:25,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 23:29:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:29:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:29:25,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:25,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:25,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:25,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:25,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:25,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:25,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:25,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:25,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:29:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:25,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:25,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:25,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:25,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:25,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:25,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:25,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:25,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:29:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:25,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:25,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:25,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:25,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:25,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:25,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:25,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:25,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:25,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:25,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:29:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:25,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:25,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:25,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:25,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:25,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:25,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:25,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:25,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:25,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:25,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:25,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:25,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:29:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:25,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:25,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:25,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:25,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:25,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:25,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:29:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:25,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:25,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:25,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:25,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:25,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:25,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:25,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 10 proven. 590 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 23:29:25,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342501873] [2020-10-13 23:29:25,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:25,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 23:29:25,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485078467] [2020-10-13 23:29:25,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 23:29:25,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:25,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 23:29:25,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:29:25,994 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 24 states. [2020-10-13 23:29:26,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:26,109 INFO L93 Difference]: Finished difference Result 200 states and 203 transitions. [2020-10-13 23:29:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:29:26,110 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 143 [2020-10-13 23:29:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:26,111 INFO L225 Difference]: With dead ends: 200 [2020-10-13 23:29:26,111 INFO L226 Difference]: Without dead ends: 151 [2020-10-13 23:29:26,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:29:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-13 23:29:26,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-10-13 23:29:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 23:29:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2020-10-13 23:29:26,119 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 143 [2020-10-13 23:29:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:26,119 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2020-10-13 23:29:26,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 23:29:26,119 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2020-10-13 23:29:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 23:29:26,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:26,120 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:26,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:29:26,121 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:26,121 INFO L82 PathProgramCache]: Analyzing trace with hash -800510790, now seen corresponding path program 30 times [2020-10-13 23:29:26,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:26,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111587172] [2020-10-13 23:29:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:31,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:31,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 23:29:31,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 23:29:31,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:31,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:29:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:29:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:29:31,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:31,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:31,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:31,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:31,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:31,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:31,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:31,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:31,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:31,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:29:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:31,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:31,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:31,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:31,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:31,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:31,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:29:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:31,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:31,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:31,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:31,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:31,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:31,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:31,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:31,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:29:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:31,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:31,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:31,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:31,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:31,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:31,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 23:29:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:31,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:31,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:31,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:31,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:31,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:31,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 23:29:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:31,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:31,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:31,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:31,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:31,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:31,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 23:29:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2020-10-13 23:29:31,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111587172] [2020-10-13 23:29:31,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:31,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:29:31,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011194543] [2020-10-13 23:29:31,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:29:31,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:31,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:29:31,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:29:31,417 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 18 states. [2020-10-13 23:29:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:31,598 INFO L93 Difference]: Finished difference Result 266 states and 270 transitions. [2020-10-13 23:29:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:29:31,599 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 146 [2020-10-13 23:29:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:31,600 INFO L225 Difference]: With dead ends: 266 [2020-10-13 23:29:31,601 INFO L226 Difference]: Without dead ends: 152 [2020-10-13 23:29:31,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:29:31,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-13 23:29:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-13 23:29:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-13 23:29:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2020-10-13 23:29:31,609 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 146 [2020-10-13 23:29:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:31,609 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2020-10-13 23:29:31,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:29:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2020-10-13 23:29:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 23:29:31,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:31,611 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 15, 15, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:31,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:29:31,611 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:31,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2042740580, now seen corresponding path program 31 times [2020-10-13 23:29:31,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:31,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099080576] [2020-10-13 23:29:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:36,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:36,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 23:29:36,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 23:29:36,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:36,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 23:29:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 23:29:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 23:29:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:37,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:37,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:37,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:37,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:37,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:37,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 23:29:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:37,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:37,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:37,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:37,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:29:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:37,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:37,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:37,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:37,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:37,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:37,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-13 23:29:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:37,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:37,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:37,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:29:37,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:37,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:37,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 23:29:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:37,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:37,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:37,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:37,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:37,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:37,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:29:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:37,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:37,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:37,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:37,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:37,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:37,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:37,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:37,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 10 proven. 651 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 23:29:37,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099080576] [2020-10-13 23:29:37,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:37,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 23:29:37,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717564484] [2020-10-13 23:29:37,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 23:29:37,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:37,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 23:29:37,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:29:37,105 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 25 states. [2020-10-13 23:29:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:37,213 INFO L93 Difference]: Finished difference Result 205 states and 208 transitions. [2020-10-13 23:29:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:29:37,213 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 148 [2020-10-13 23:29:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:37,214 INFO L225 Difference]: With dead ends: 205 [2020-10-13 23:29:37,215 INFO L226 Difference]: Without dead ends: 156 [2020-10-13 23:29:37,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:29:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-13 23:29:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2020-10-13 23:29:37,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-13 23:29:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2020-10-13 23:29:37,225 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 148 [2020-10-13 23:29:37,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:37,225 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2020-10-13 23:29:37,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 23:29:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2020-10-13 23:29:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 23:29:37,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:37,227 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 15, 15, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:37,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:29:37,227 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:37,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1045656136, now seen corresponding path program 32 times [2020-10-13 23:29:37,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:37,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910931937] [2020-10-13 23:29:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:42,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:42,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 23:29:42,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:29:42,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:42,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:29:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:29:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:29:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:42,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:42,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:42,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:42,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:42,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:42,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:42,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:42,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:29:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:42,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:42,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:42,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:42,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:42,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:29:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:42,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:42,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:42,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:42,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:42,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:42,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:42,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:29:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:42,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:42,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:42,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:42,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:42,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:29:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:42,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:42,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:42,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:42,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:42,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:42,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:29:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:42,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:42,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:42,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:42,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:42,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:42,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:42,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:42,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:42,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 10 proven. 225 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-10-13 23:29:42,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910931937] [2020-10-13 23:29:42,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:42,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:29:42,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664673141] [2020-10-13 23:29:42,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:29:42,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:42,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:29:42,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:29:42,475 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 19 states. [2020-10-13 23:29:42,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:42,620 INFO L93 Difference]: Finished difference Result 274 states and 278 transitions. [2020-10-13 23:29:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:29:42,620 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 151 [2020-10-13 23:29:42,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:42,622 INFO L225 Difference]: With dead ends: 274 [2020-10-13 23:29:42,622 INFO L226 Difference]: Without dead ends: 157 [2020-10-13 23:29:42,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:29:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-13 23:29:42,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-10-13 23:29:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-13 23:29:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2020-10-13 23:29:42,630 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 151 [2020-10-13 23:29:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:42,631 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2020-10-13 23:29:42,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:29:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2020-10-13 23:29:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 23:29:42,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:42,632 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 16, 16, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:42,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:29:42,632 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:42,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1787991830, now seen corresponding path program 33 times [2020-10-13 23:29:42,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:42,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223040171] [2020-10-13 23:29:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:42,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:47,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:47,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 23:29:47,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5269 [2020-10-13 23:29:47,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:47,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 23:29:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:29:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 23:29:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:48,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:48,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:48,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:48,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:48,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:48,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:48,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:48,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:29:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:48,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:48,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:48,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:48,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:48,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:48,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:48,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:48,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:48,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:29:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:48,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:48,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:48,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:48,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:29:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:48,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:48,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:48,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:48,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:48,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:29:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:48,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:48,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:48,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:48,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:48,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 23:29:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:48,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:48,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:48,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 10 proven. 715 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-13 23:29:48,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223040171] [2020-10-13 23:29:48,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:48,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 23:29:48,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912934039] [2020-10-13 23:29:48,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 23:29:48,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:48,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 23:29:48,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:29:48,303 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 26 states. [2020-10-13 23:29:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:48,407 INFO L93 Difference]: Finished difference Result 210 states and 213 transitions. [2020-10-13 23:29:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 23:29:48,408 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 153 [2020-10-13 23:29:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:48,409 INFO L225 Difference]: With dead ends: 210 [2020-10-13 23:29:48,410 INFO L226 Difference]: Without dead ends: 161 [2020-10-13 23:29:48,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:29:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-13 23:29:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2020-10-13 23:29:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 23:29:48,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2020-10-13 23:29:48,417 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 153 [2020-10-13 23:29:48,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:48,418 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2020-10-13 23:29:48,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 23:29:48,418 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2020-10-13 23:29:48,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 23:29:48,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:48,419 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 16, 16, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:48,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 23:29:48,419 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1272451842, now seen corresponding path program 34 times [2020-10-13 23:29:48,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:48,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177670303] [2020-10-13 23:29:48,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:48,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:53,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:53,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 23:29:53,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 23:29:53,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:53,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 23:29:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:29:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 23:29:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:53,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:53,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:53,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:53,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:53,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:53,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:53,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:29:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:53,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:53,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:53,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:53,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:53,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-13 23:29:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:53,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:53,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:53,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:53,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:53,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:53,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 23:29:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:53,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:53,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:53,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:53,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:53,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:53,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:53,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:29:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:53,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:53,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:53,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:53,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:53,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:53,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-13 23:29:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:53,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:53,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:53,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:53,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:53,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:53,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:53,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:53,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:53,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:53,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 10 proven. 782 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-13 23:29:53,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177670303] [2020-10-13 23:29:53,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:53,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 23:29:53,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665386642] [2020-10-13 23:29:53,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 23:29:53,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:53,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 23:29:53,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:29:53,878 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 27 states. [2020-10-13 23:29:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:54,074 INFO L93 Difference]: Finished difference Result 213 states and 216 transitions. [2020-10-13 23:29:54,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 23:29:54,074 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 156 [2020-10-13 23:29:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:54,075 INFO L225 Difference]: With dead ends: 213 [2020-10-13 23:29:54,075 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 23:29:54,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:29:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 23:29:54,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2020-10-13 23:29:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-13 23:29:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2020-10-13 23:29:54,083 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 156 [2020-10-13 23:29:54,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:54,083 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2020-10-13 23:29:54,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 23:29:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2020-10-13 23:29:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 23:29:54,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:54,085 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 16, 16, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:54,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 23:29:54,085 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1384124906, now seen corresponding path program 35 times [2020-10-13 23:29:54,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:54,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184239305] [2020-10-13 23:29:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:59,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:59,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 23:29:59,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 23:29:59,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:59,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:29:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:29:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:29:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:59,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:59,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:59,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:59,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:59,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:59,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:29:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:59,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:59,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:59,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:59,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:59,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:59,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:29:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:59,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:59,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:59,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:59,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:59,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:59,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:29:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:59,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:59,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:59,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:59,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:59,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:59,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:59,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:29:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:59,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:59,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:59,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:59,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:59,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:59,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 23:29:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:59,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:59,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:59,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:59,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:59,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:59,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:59,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 10 proven. 256 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-10-13 23:29:59,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184239305] [2020-10-13 23:29:59,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:59,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:29:59,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415988910] [2020-10-13 23:29:59,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:29:59,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:59,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:29:59,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:29:59,372 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 20 states. [2020-10-13 23:29:59,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:59,497 INFO L93 Difference]: Finished difference Result 288 states and 292 transitions. [2020-10-13 23:29:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:29:59,498 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 159 [2020-10-13 23:29:59,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:59,500 INFO L225 Difference]: With dead ends: 288 [2020-10-13 23:29:59,500 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 23:29:59,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:29:59,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 23:29:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2020-10-13 23:29:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-13 23:29:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2020-10-13 23:29:59,518 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 159 [2020-10-13 23:29:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:59,519 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2020-10-13 23:29:59,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:29:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2020-10-13 23:29:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 23:29:59,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:59,521 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 17, 17, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:59,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 23:29:59,522 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:59,522 INFO L82 PathProgramCache]: Analyzing trace with hash -378685068, now seen corresponding path program 36 times [2020-10-13 23:29:59,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:59,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984397964] [2020-10-13 23:29:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:04,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:04,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 23:30:04,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 23:30:04,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:04,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 23:30:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 23:30:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 23:30:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:04,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:04,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:04,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:04,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:30:04,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:04,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:04,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:04,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:30:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:04,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:04,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:04,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:04,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:04,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:04,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:04,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:04,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:04,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:30:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:04,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:04,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:30:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:04,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:04,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:04,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:04,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:04,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:04,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 23:30:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:04,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:04,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:04,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:04,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:04,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 23:30:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:04,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:04,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:04,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:04,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:04,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:04,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 10 proven. 852 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 23:30:04,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984397964] [2020-10-13 23:30:04,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:04,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 23:30:04,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089001620] [2020-10-13 23:30:04,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 23:30:04,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:04,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 23:30:04,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:30:04,980 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 28 states. [2020-10-13 23:30:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:05,153 INFO L93 Difference]: Finished difference Result 218 states and 221 transitions. [2020-10-13 23:30:05,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:30:05,153 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 161 [2020-10-13 23:30:05,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:05,155 INFO L225 Difference]: With dead ends: 218 [2020-10-13 23:30:05,155 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 23:30:05,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:30:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 23:30:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-10-13 23:30:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-13 23:30:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2020-10-13 23:30:05,164 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 161 [2020-10-13 23:30:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:05,164 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2020-10-13 23:30:05,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 23:30:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2020-10-13 23:30:05,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 23:30:05,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:05,166 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 17, 17, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:05,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 23:30:05,166 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:05,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:05,166 INFO L82 PathProgramCache]: Analyzing trace with hash 319571424, now seen corresponding path program 37 times [2020-10-13 23:30:05,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:05,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431085515] [2020-10-13 23:30:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:05,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:10,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:10,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 23:30:10,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 23:30:10,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:10,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:30:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:30:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 23:30:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:10,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:10,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:10,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:10,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:30:10,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:10,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:30:10,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-13 23:30:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:10,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:10,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:10,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:10,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:10,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:10,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:10,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:10,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 23:30:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:10,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:10,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:10,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:10,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:10,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:10,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:30:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:10,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:10,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:10,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:10,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:10,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:10,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:10,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-13 23:30:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:10,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:10,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:10,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:10,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:10,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 23:30:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:10,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:10,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:10,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:10,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:10,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:10,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 10 proven. 289 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2020-10-13 23:30:10,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431085515] [2020-10-13 23:30:10,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:10,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:30:10,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150722930] [2020-10-13 23:30:10,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:30:10,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:10,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:30:10,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:30:10,459 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 21 states. [2020-10-13 23:30:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:10,607 INFO L93 Difference]: Finished difference Result 296 states and 300 transitions. [2020-10-13 23:30:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:30:10,608 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 164 [2020-10-13 23:30:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:10,609 INFO L225 Difference]: With dead ends: 296 [2020-10-13 23:30:10,609 INFO L226 Difference]: Without dead ends: 170 [2020-10-13 23:30:10,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:30:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-13 23:30:10,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2020-10-13 23:30:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 23:30:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2020-10-13 23:30:10,619 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 164 [2020-10-13 23:30:10,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:10,619 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2020-10-13 23:30:10,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:30:10,619 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2020-10-13 23:30:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 23:30:10,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:10,621 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:10,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 23:30:10,622 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:10,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:10,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1265427778, now seen corresponding path program 38 times [2020-10-13 23:30:10,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:10,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902831509] [2020-10-13 23:30:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:10,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:15,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 23:30:15,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:15,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 23:30:15,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:15,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 23:30:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 23:30:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 23:30:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:16,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:16,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:16,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:16,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:16,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:30:16,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:16,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:16,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 23:30:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:16,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:16,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:16,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:16,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:16,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:16,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:16,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:16,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:16,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:16,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:30:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 23:30:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:16,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:16,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:16,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:16,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:16,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:16,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:16,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-13 23:30:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:16,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:16,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:16,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:16,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:16,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 23:30:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:16,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:16,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:16,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:16,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:16,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:16,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:16,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:16,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:16,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 23:30:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:16,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:16,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:16,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:16,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:16,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:16,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1349 backedges. 10 proven. 925 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2020-10-13 23:30:16,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902831509] [2020-10-13 23:30:16,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:16,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:30:16,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601187455] [2020-10-13 23:30:16,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:30:16,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:16,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:30:16,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:30:16,083 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 29 states. [2020-10-13 23:30:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:16,225 INFO L93 Difference]: Finished difference Result 223 states and 226 transitions. [2020-10-13 23:30:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 23:30:16,226 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 166 [2020-10-13 23:30:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:16,228 INFO L225 Difference]: With dead ends: 223 [2020-10-13 23:30:16,228 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 23:30:16,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:30:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 23:30:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2020-10-13 23:30:16,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 23:30:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2020-10-13 23:30:16,237 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 166 [2020-10-13 23:30:16,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:16,237 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2020-10-13 23:30:16,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:30:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2020-10-13 23:30:16,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 23:30:16,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:16,239 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:16,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 23:30:16,239 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:16,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:16,239 INFO L82 PathProgramCache]: Analyzing trace with hash 278323026, now seen corresponding path program 39 times [2020-10-13 23:30:16,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:16,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517165643] [2020-10-13 23:30:16,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:21,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:21,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 23:30:21,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 23:30:21,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:21,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:30:21,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 23:30:21,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 23:30:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:21,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:21,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:21,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:21,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:30:21,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:21,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:21,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:21,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:30:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:21,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:21,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:21,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:21,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:21,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:21,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:21,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:21,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:30:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:21,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:21,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:21,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:21,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:21,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:21,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:21,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:21,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:21,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:21,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 23:30:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:21,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:21,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:21,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:21,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:21,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:21,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:21,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:21,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:21,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 23:30:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:21,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:21,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:21,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:21,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:21,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:21,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 23:30:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:21,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:21,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:21,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:21,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:21,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:21,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:21,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 10 proven. 1001 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2020-10-13 23:30:21,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517165643] [2020-10-13 23:30:21,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:21,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:30:21,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523078593] [2020-10-13 23:30:21,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:30:21,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:21,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:30:21,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:30:21,748 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand 30 states. [2020-10-13 23:30:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:21,964 INFO L93 Difference]: Finished difference Result 226 states and 229 transitions. [2020-10-13 23:30:21,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 23:30:21,965 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 169 [2020-10-13 23:30:21,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:21,966 INFO L225 Difference]: With dead ends: 226 [2020-10-13 23:30:21,967 INFO L226 Difference]: Without dead ends: 177 [2020-10-13 23:30:21,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:30:21,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-13 23:30:21,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2020-10-13 23:30:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-13 23:30:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2020-10-13 23:30:21,975 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 169 [2020-10-13 23:30:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:21,976 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2020-10-13 23:30:21,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:30:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2020-10-13 23:30:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 23:30:21,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:21,977 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:21,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 23:30:21,978 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:21,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1081731906, now seen corresponding path program 40 times [2020-10-13 23:30:21,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:21,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958512407] [2020-10-13 23:30:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:22,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:27,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:27,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 23:30:27,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:27,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 23:30:27,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:27,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:30:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:30:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:30:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:27,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:27,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:27,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:30:27,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:27,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 23:30:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:27,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:27,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:27,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:27,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:27,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:27,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:27,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:30:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:27,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:27,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:27,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:27,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:27,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:27,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:27,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:27,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:27,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:27,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-13 23:30:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:27,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:27,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:27,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:27,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:27,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:27,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 23:30:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:27,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:27,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:27,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:27,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:27,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:27,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-13 23:30:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:27,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:27,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:27,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:27,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:27,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:27,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:27,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 10 proven. 324 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2020-10-13 23:30:27,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958512407] [2020-10-13 23:30:27,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:27,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:30:27,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37608478] [2020-10-13 23:30:27,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:30:27,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:27,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:30:27,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:30:27,286 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 22 states. [2020-10-13 23:30:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:27,436 INFO L93 Difference]: Finished difference Result 310 states and 314 transitions. [2020-10-13 23:30:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 23:30:27,437 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 172 [2020-10-13 23:30:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:27,438 INFO L225 Difference]: With dead ends: 310 [2020-10-13 23:30:27,438 INFO L226 Difference]: Without dead ends: 178 [2020-10-13 23:30:27,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:30:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-13 23:30:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2020-10-13 23:30:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-13 23:30:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2020-10-13 23:30:27,446 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 172 [2020-10-13 23:30:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:27,446 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2020-10-13 23:30:27,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:30:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2020-10-13 23:30:27,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 23:30:27,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:27,448 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:27,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 23:30:27,448 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:27,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1543375012, now seen corresponding path program 41 times [2020-10-13 23:30:27,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:27,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243891489] [2020-10-13 23:30:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:32,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:32,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 23:30:32,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 23:30:32,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:32,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 23:30:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 23:30:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 23:30:32,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:32,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:32,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:32,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:30:32,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:32,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:32,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:32,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 23:30:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:32,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:32,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:32,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:32,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:32,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:32,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:32,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-13 23:30:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:32,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:32,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:32,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:32,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:32,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 23:30:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:32,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:32,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:32,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:32,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:32,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 23:30:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:32,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:32,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:32,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:32,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:32,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-13 23:30:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:32,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:32,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:32,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 10 proven. 1080 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2020-10-13 23:30:32,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243891489] [2020-10-13 23:30:32,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:32,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 23:30:32,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040353995] [2020-10-13 23:30:32,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 23:30:32,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:32,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 23:30:32,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:30:32,987 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 31 states. [2020-10-13 23:30:33,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:33,179 INFO L93 Difference]: Finished difference Result 231 states and 234 transitions. [2020-10-13 23:30:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 23:30:33,180 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 174 [2020-10-13 23:30:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:33,181 INFO L225 Difference]: With dead ends: 231 [2020-10-13 23:30:33,181 INFO L226 Difference]: Without dead ends: 182 [2020-10-13 23:30:33,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:30:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-13 23:30:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2020-10-13 23:30:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-13 23:30:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2020-10-13 23:30:33,189 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 174 [2020-10-13 23:30:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:33,190 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2020-10-13 23:30:33,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 23:30:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2020-10-13 23:30:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 23:30:33,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:33,191 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:33,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 23:30:33,192 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:33,192 INFO L82 PathProgramCache]: Analyzing trace with hash -92575568, now seen corresponding path program 42 times [2020-10-13 23:30:33,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:33,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999699591] [2020-10-13 23:30:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:33,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:38,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:38,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 23:30:38,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 23:30:38,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:38,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:30:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:30:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 23:30:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:38,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:38,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:38,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:38,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:38,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:38,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:38,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:38,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:38,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:30:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:38,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:38,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:38,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:38,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:38,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 23:30:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:38,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:38,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:38,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:38,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:38,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:38,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 23:30:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:38,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:38,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:38,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:38,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:38,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:38,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:38,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 23:30:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:38,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:38,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:38,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:38,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:38,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:38,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-13 23:30:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:38,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:38,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:38,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:38,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:38,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:38,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 10 proven. 361 refuted. 0 times theorem prover too weak. 1252 trivial. 0 not checked. [2020-10-13 23:30:38,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999699591] [2020-10-13 23:30:38,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:38,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:30:38,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633128969] [2020-10-13 23:30:38,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:30:38,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:38,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:30:38,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:30:38,546 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand 23 states. [2020-10-13 23:30:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:38,716 INFO L93 Difference]: Finished difference Result 318 states and 322 transitions. [2020-10-13 23:30:38,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:30:38,716 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 177 [2020-10-13 23:30:38,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:38,718 INFO L225 Difference]: With dead ends: 318 [2020-10-13 23:30:38,718 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 23:30:38,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:30:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 23:30:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2020-10-13 23:30:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-13 23:30:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2020-10-13 23:30:38,726 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 177 [2020-10-13 23:30:38,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:38,726 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions. [2020-10-13 23:30:38,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:30:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions. [2020-10-13 23:30:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 23:30:38,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:38,728 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:38,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 23:30:38,728 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:38,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:38,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1791207282, now seen corresponding path program 43 times [2020-10-13 23:30:38,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:38,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170970888] [2020-10-13 23:30:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:38,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking...