/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:53:00,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:53:00,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:53:00,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:53:00,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:53:00,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:53:00,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:53:00,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:53:00,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:53:00,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:53:00,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:53:00,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:53:00,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:53:00,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:53:00,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:53:00,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:53:00,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:53:00,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:53:00,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:53:00,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:53:00,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:53:00,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:53:00,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:53:00,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:53:00,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:53:00,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:53:00,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:53:00,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:53:00,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:53:00,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:53:00,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:53:00,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:53:00,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:53:00,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:53:00,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:53:00,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:53:00,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:53:00,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:53:00,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:53:00,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:53:00,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:53:00,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:53:00,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:53:00,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:53:00,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:53:00,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:53:00,186 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:53:00,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:53:00,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:53:00,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:53:00,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:53:00,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:53:00,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:53:00,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:53:00,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:53:00,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:53:00,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:53:00,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:53:00,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:53:00,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:53:00,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:53:00,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:53:00,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:53:00,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:53:00,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:53:00,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:53:00,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:53:00,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:53:00,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:53:00,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:53:00,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:53:00,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:53:00,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:53:00,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:53:00,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:53:00,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:53:00,659 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:53:00,660 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 06:53:00,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9d1e887c/1251da8c05bb49aaa4048fd44b39f413/FLAGd8230a094 [2020-09-25 06:53:01,218 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:53:01,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 06:53:01,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9d1e887c/1251da8c05bb49aaa4048fd44b39f413/FLAGd8230a094 [2020-09-25 06:53:01,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9d1e887c/1251da8c05bb49aaa4048fd44b39f413 [2020-09-25 06:53:01,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:53:01,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:53:01,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:53:01,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:53:01,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:53:01,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:53:01" (1/1) ... [2020-09-25 06:53:01,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a86aac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01, skipping insertion in model container [2020-09-25 06:53:01,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:53:01" (1/1) ... [2020-09-25 06:53:01,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:53:01,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:53:01,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:53:01,946 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:53:01,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:53:01,981 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:53:01,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01 WrapperNode [2020-09-25 06:53:01,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:53:01,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:53:01,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:53:01,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:53:01,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01" (1/1) ... [2020-09-25 06:53:01,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01" (1/1) ... [2020-09-25 06:53:02,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01" (1/1) ... [2020-09-25 06:53:02,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01" (1/1) ... [2020-09-25 06:53:02,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01" (1/1) ... [2020-09-25 06:53:02,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01" (1/1) ... [2020-09-25 06:53:02,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01" (1/1) ... [2020-09-25 06:53:02,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:53:02,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:53:02,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:53:02,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:53:02,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:53:02,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:53:02,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:53:02,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 06:53:02,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 06:53:02,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:53:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:53:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:53:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 06:53:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 06:53:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:53:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:53:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:53:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:53:02,510 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:53:02,510 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 06:53:02,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:53:02 BoogieIcfgContainer [2020-09-25 06:53:02,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:53:02,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:53:02,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:53:02,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:53:02,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:53:01" (1/3) ... [2020-09-25 06:53:02,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46178a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:53:02, skipping insertion in model container [2020-09-25 06:53:02,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:01" (2/3) ... [2020-09-25 06:53:02,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46178a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:53:02, skipping insertion in model container [2020-09-25 06:53:02,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:53:02" (3/3) ... [2020-09-25 06:53:02,524 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-09-25 06:53:02,533 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:53:02,542 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:53:02,563 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:53:02,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:53:02,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:53:02,593 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:53:02,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:53:02,593 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:53:02,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:53:02,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:53:02,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:53:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 06:53:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 06:53:02,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:02,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:02,624 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:02,630 INFO L82 PathProgramCache]: Analyzing trace with hash -537390573, now seen corresponding path program 1 times [2020-09-25 06:53:02,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:02,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430794411] [2020-09-25 06:53:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:02,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:02,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 06:53:02,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:02,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 06:53:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:02,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:53:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:02,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 06:53:02,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:02,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:02,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:53:02,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:02,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:53:02,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430794411] [2020-09-25 06:53:02,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:02,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 06:53:02,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345867942] [2020-09-25 06:53:02,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 06:53:02,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:02,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 06:53:02,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 06:53:02,997 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-09-25 06:53:03,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:03,040 INFO L93 Difference]: Finished difference Result 134 states and 203 transitions. [2020-09-25 06:53:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 06:53:03,042 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-09-25 06:53:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:03,055 INFO L225 Difference]: With dead ends: 134 [2020-09-25 06:53:03,055 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 06:53:03,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 06:53:03,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 06:53:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-25 06:53:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 06:53:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2020-09-25 06:53:03,117 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 19 [2020-09-25 06:53:03,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:03,118 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2020-09-25 06:53:03,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 06:53:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2020-09-25 06:53:03,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 06:53:03,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:03,120 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] [2020-09-25 06:53:03,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:53:03,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:03,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:03,121 INFO L82 PathProgramCache]: Analyzing trace with hash 471335344, now seen corresponding path program 1 times [2020-09-25 06:53:03,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:03,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137705705] [2020-09-25 06:53:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:03,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:03,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:03,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:53:03,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 06:53:03,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:03,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:53:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:53:03,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:53:03,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:03,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:03,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:03,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:03,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:53:03,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:03,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:03,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:03,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:53:03,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137705705] [2020-09-25 06:53:03,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:03,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:53:03,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059268239] [2020-09-25 06:53:03,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:53:03,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:03,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:53:03,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:53:03,496 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 7 states. [2020-09-25 06:53:03,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:03,797 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-25 06:53:03,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:53:03,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 06:53:03,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:03,800 INFO L225 Difference]: With dead ends: 89 [2020-09-25 06:53:03,800 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 06:53:03,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:53:03,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 06:53:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2020-09-25 06:53:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 06:53:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2020-09-25 06:53:03,835 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 20 [2020-09-25 06:53:03,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:03,836 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2020-09-25 06:53:03,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:53:03,836 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2020-09-25 06:53:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 06:53:03,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:03,837 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:03,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:53:03,838 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1383579147, now seen corresponding path program 1 times [2020-09-25 06:53:03,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:03,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418493849] [2020-09-25 06:53:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:04,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:04,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:53:04,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 06:53:04,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:04,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:53:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:53:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:04,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:04,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:04,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:04,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:53:04,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:04,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:04,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:53:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:04,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:04,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:04,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:04,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:04,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:53:04,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418493849] [2020-09-25 06:53:04,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:04,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:53:04,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548196025] [2020-09-25 06:53:04,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:53:04,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:04,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:53:04,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:53:04,192 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand 7 states. [2020-09-25 06:53:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:04,356 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2020-09-25 06:53:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:53:04,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-25 06:53:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:04,359 INFO L225 Difference]: With dead ends: 93 [2020-09-25 06:53:04,359 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 06:53:04,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:53:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 06:53:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-09-25 06:53:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 06:53:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-09-25 06:53:04,373 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 25 [2020-09-25 06:53:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:04,374 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-09-25 06:53:04,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:53:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-09-25 06:53:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 06:53:04,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:04,376 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:04,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:53:04,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:04,377 INFO L82 PathProgramCache]: Analyzing trace with hash 859677550, now seen corresponding path program 1 times [2020-09-25 06:53:04,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:04,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390168413] [2020-09-25 06:53:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:04,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:04,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:04,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:53:04,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:04,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-25 06:53:04,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:04,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:04,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:53:04,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:53:04,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:04,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:04,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:04,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:04,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:53:04,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:04,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:04,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:04,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:04,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:53:04,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:04,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:04,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:04,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:04,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:04,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:04,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:53:04,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:04,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:04,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:04,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:04,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:04,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:53:04,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:04,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:53:04,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390168413] [2020-09-25 06:53:04,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:04,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:53:04,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848758645] [2020-09-25 06:53:04,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:53:04,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:04,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:53:04,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:53:04,959 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 7 states. [2020-09-25 06:53:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:05,137 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2020-09-25 06:53:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:53:05,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-25 06:53:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:05,139 INFO L225 Difference]: With dead ends: 91 [2020-09-25 06:53:05,139 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 06:53:05,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:53:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 06:53:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-09-25 06:53:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 06:53:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2020-09-25 06:53:05,166 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 41 [2020-09-25 06:53:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:05,166 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2020-09-25 06:53:05,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:53:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2020-09-25 06:53:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 06:53:05,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:05,169 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:05,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:53:05,170 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:05,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:05,171 INFO L82 PathProgramCache]: Analyzing trace with hash -943144682, now seen corresponding path program 1 times [2020-09-25 06:53:05,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:05,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132858439] [2020-09-25 06:53:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:05,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:05,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 06:53:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-25 06:53:05,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:05,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:53:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 06:53:05,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:05,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:53:05,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:05,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:05,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:05,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:05,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:05,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:05,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:05,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:05,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:05,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:53:05,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:05,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:05,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:05,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:05,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:05,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:53:05,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132858439] [2020-09-25 06:53:05,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:05,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:53:05,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254004276] [2020-09-25 06:53:05,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:53:05,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:05,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:53:05,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:53:05,632 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand 7 states. [2020-09-25 06:53:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:05,787 INFO L93 Difference]: Finished difference Result 120 states and 141 transitions. [2020-09-25 06:53:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:53:05,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-09-25 06:53:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:05,790 INFO L225 Difference]: With dead ends: 120 [2020-09-25 06:53:05,790 INFO L226 Difference]: Without dead ends: 118 [2020-09-25 06:53:05,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:53:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-25 06:53:05,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2020-09-25 06:53:05,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 06:53:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2020-09-25 06:53:05,803 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 44 [2020-09-25 06:53:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:05,804 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2020-09-25 06:53:05,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:53:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2020-09-25 06:53:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 06:53:05,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:05,806 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:05,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:53:05,806 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1177695863, now seen corresponding path program 2 times [2020-09-25 06:53:05,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:05,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873752199] [2020-09-25 06:53:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:06,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:06,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 06:53:06,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:06,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-09-25 06:53:06,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:06,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:06,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:53:06,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:53:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:53:06,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:06,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:06,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:06,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:06,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:06,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:06,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:06,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:06,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:06,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:06,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:06,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:06,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:53:06,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:06,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:06,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:53:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:06,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:06,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:06,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:06,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:06,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:06,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:06,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:06,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:06,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:06,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:06,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 06:53:06,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873752199] [2020-09-25 06:53:06,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:06,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:53:06,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590957270] [2020-09-25 06:53:06,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:53:06,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:06,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:53:06,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:53:06,760 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand 9 states. [2020-09-25 06:53:07,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:07,035 INFO L93 Difference]: Finished difference Result 132 states and 155 transitions. [2020-09-25 06:53:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:53:07,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-09-25 06:53:07,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:07,039 INFO L225 Difference]: With dead ends: 132 [2020-09-25 06:53:07,039 INFO L226 Difference]: Without dead ends: 130 [2020-09-25 06:53:07,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:53:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-25 06:53:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-09-25 06:53:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 06:53:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 149 transitions. [2020-09-25 06:53:07,054 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 149 transitions. Word has length 46 [2020-09-25 06:53:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:07,054 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 149 transitions. [2020-09-25 06:53:07,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:53:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 149 transitions. [2020-09-25 06:53:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 06:53:07,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:07,057 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:07,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:53:07,057 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:07,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:07,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1826770767, now seen corresponding path program 1 times [2020-09-25 06:53:07,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:07,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824351710] [2020-09-25 06:53:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:08,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 06:53:08,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-09-25 06:53:08,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:08,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:53:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:53:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 06:53:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:08,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:08,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:08,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:08,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:08,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:08,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:08,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:08,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:08,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:08,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:53:08,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:08,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:08,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:08,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:08,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:53:08,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:08,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:53:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:08,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:08,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:08,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:08,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:08,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 06:53:08,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824351710] [2020-09-25 06:53:08,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:08,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 06:53:08,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935433182] [2020-09-25 06:53:08,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:53:08,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:08,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:53:08,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:53:08,235 INFO L87 Difference]: Start difference. First operand 126 states and 149 transitions. Second operand 9 states. [2020-09-25 06:53:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:08,515 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2020-09-25 06:53:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:53:08,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-25 06:53:08,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:08,517 INFO L225 Difference]: With dead ends: 139 [2020-09-25 06:53:08,517 INFO L226 Difference]: Without dead ends: 134 [2020-09-25 06:53:08,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:53:08,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-25 06:53:08,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2020-09-25 06:53:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-25 06:53:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-09-25 06:53:08,531 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 49 [2020-09-25 06:53:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:08,531 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-09-25 06:53:08,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:53:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-09-25 06:53:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 06:53:08,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:08,534 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:08,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:53:08,534 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:08,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:08,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1519048418, now seen corresponding path program 1 times [2020-09-25 06:53:08,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:08,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749594282] [2020-09-25 06:53:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:09,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:53:09,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-09-25 06:53:09,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:09,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:53:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:53:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 06:53:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:09,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:09,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:09,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:09,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:09,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:09,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:09,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:53:09,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:09,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:09,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:09,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:09,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:09,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:09,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:09,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:09,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:53:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:09,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:09,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:09,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:09,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:09,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:09,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:09,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:53:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:09,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:09,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:09,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:09,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 06:53:09,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749594282] [2020-09-25 06:53:09,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:09,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 06:53:09,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743545564] [2020-09-25 06:53:09,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:53:09,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:09,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:53:09,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:53:09,998 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2020-09-25 06:53:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:10,182 INFO L93 Difference]: Finished difference Result 146 states and 169 transitions. [2020-09-25 06:53:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:53:10,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-25 06:53:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:10,184 INFO L225 Difference]: With dead ends: 146 [2020-09-25 06:53:10,184 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 06:53:10,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:53:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 06:53:10,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2020-09-25 06:53:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-25 06:53:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-09-25 06:53:10,196 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 58 [2020-09-25 06:53:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:10,197 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-09-25 06:53:10,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:53:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-09-25 06:53:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 06:53:10,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:10,199 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:10,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:53:10,199 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:10,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:10,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1733407875, now seen corresponding path program 1 times [2020-09-25 06:53:10,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:10,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811563371] [2020-09-25 06:53:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:11,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:11,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:53:11,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-09-25 06:53:11,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:11,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:53:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:53:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 06:53:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:11,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:11,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:11,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:11,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:11,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:11,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:11,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:11,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:11,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:11,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:11,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:11,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:53:11,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:11,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:11,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:11,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:11,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:11,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:11,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:53:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:11,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:11,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:11,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:11,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:11,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:11,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:11,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:11,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:11,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:11,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:11,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:11,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 06:53:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:11,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:11,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:11,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:11,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:11,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:11,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:11,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 06:53:11,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811563371] [2020-09-25 06:53:11,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:11,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 06:53:11,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89872226] [2020-09-25 06:53:11,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:53:11,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:11,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:53:11,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:53:11,552 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 9 states. [2020-09-25 06:53:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:11,752 INFO L93 Difference]: Finished difference Result 169 states and 198 transitions. [2020-09-25 06:53:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:53:11,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-09-25 06:53:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:11,755 INFO L225 Difference]: With dead ends: 169 [2020-09-25 06:53:11,755 INFO L226 Difference]: Without dead ends: 167 [2020-09-25 06:53:11,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:53:11,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-09-25 06:53:11,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2020-09-25 06:53:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 06:53:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 187 transitions. [2020-09-25 06:53:11,769 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 187 transitions. Word has length 62 [2020-09-25 06:53:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:11,770 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 187 transitions. [2020-09-25 06:53:11,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:53:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 187 transitions. [2020-09-25 06:53:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 06:53:11,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:11,772 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:11,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:53:11,772 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:11,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:11,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1967257859, now seen corresponding path program 1 times [2020-09-25 06:53:11,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:11,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583991857] [2020-09-25 06:53:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:11,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:11,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:16,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:16,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:53:16,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:16,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:53:16,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:16,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:53:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:53:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:53:16,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:17,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:17,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:17,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:17,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:17,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:17,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:17,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:17,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:17,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:17,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:17,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:17,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:53:17,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:17,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:17,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:17,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:17,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:17,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:53:17,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:17,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:17,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:17,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:53:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:17,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:17,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:17,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:53:17,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:17,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:17,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:17,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:53:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:17,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:17,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:17,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:17,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:53:17,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:17,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 06:53:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:17,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:17,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:17,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:17,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:17,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:17,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 06:53:17,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583991857] [2020-09-25 06:53:17,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:17,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 06:53:17,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245953408] [2020-09-25 06:53:17,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:53:17,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:17,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:53:17,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:53:17,134 INFO L87 Difference]: Start difference. First operand 160 states and 187 transitions. Second operand 12 states. [2020-09-25 06:53:17,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:17,479 INFO L93 Difference]: Finished difference Result 171 states and 198 transitions. [2020-09-25 06:53:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:53:17,479 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-09-25 06:53:17,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:17,482 INFO L225 Difference]: With dead ends: 171 [2020-09-25 06:53:17,482 INFO L226 Difference]: Without dead ends: 169 [2020-09-25 06:53:17,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:53:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-25 06:53:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2020-09-25 06:53:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-25 06:53:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2020-09-25 06:53:17,497 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 63 [2020-09-25 06:53:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:17,497 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2020-09-25 06:53:17,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:53:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2020-09-25 06:53:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 06:53:17,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:17,500 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:17,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:53:17,500 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash 659292836, now seen corresponding path program 3 times [2020-09-25 06:53:17,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:17,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371265729] [2020-09-25 06:53:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:17,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:17,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:21,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 06:53:21,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4192 [2020-09-25 06:53:21,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:21,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:53:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:53:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:53:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:21,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:21,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:21,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:21,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:21,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:21,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:21,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:21,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:21,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:53:21,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:21,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:21,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:21,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:21,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:21,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:21,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:53:21,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:21,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:53:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:21,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:21,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:21,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:21,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:21,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:21,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 06:53:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:21,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:21,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:21,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:21,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:21,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:21,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:21,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:21,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:21,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:21,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 06:53:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:21,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:21,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:21,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:21,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:21,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-09-25 06:53:21,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371265729] [2020-09-25 06:53:21,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:21,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:53:21,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209453392] [2020-09-25 06:53:21,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:53:21,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:21,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:53:21,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:53:21,999 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand 11 states. [2020-09-25 06:53:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:22,294 INFO L93 Difference]: Finished difference Result 171 states and 197 transitions. [2020-09-25 06:53:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:53:22,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-09-25 06:53:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:22,297 INFO L225 Difference]: With dead ends: 171 [2020-09-25 06:53:22,297 INFO L226 Difference]: Without dead ends: 169 [2020-09-25 06:53:22,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:53:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-25 06:53:22,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-09-25 06:53:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 06:53:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2020-09-25 06:53:22,321 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 64 [2020-09-25 06:53:22,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:22,321 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2020-09-25 06:53:22,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:53:22,321 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2020-09-25 06:53:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 06:53:22,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:22,322 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:22,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:53:22,323 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:22,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:22,323 INFO L82 PathProgramCache]: Analyzing trace with hash -822659134, now seen corresponding path program 1 times [2020-09-25 06:53:22,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:22,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379504377] [2020-09-25 06:53:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:23,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:23,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:53:23,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:23,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1123 [2020-09-25 06:53:23,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:23,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:53:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:53:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:53:23,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:23,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:23,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:23,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:23,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:23,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:23,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:23,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:23,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:23,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:23,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:23,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:23,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:23,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:23,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:23,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:23,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:23,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:23,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:23,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:23,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:23,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:23,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:53:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:23,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:23,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:23,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:23,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:53:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:23,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:23,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:23,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:23,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:23,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:23,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 06:53:23,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379504377] [2020-09-25 06:53:23,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:23,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 06:53:23,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407053054] [2020-09-25 06:53:23,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:53:23,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:23,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:53:23,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:53:23,570 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand 9 states. [2020-09-25 06:53:23,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:23,839 INFO L93 Difference]: Finished difference Result 187 states and 216 transitions. [2020-09-25 06:53:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:53:23,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-25 06:53:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:23,842 INFO L225 Difference]: With dead ends: 187 [2020-09-25 06:53:23,843 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 06:53:23,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:53:23,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 06:53:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2020-09-25 06:53:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 06:53:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 205 transitions. [2020-09-25 06:53:23,857 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 205 transitions. Word has length 65 [2020-09-25 06:53:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:23,858 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 205 transitions. [2020-09-25 06:53:23,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:53:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 205 transitions. [2020-09-25 06:53:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 06:53:23,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:23,859 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:23,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 06:53:23,860 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:23,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1510377470, now seen corresponding path program 1 times [2020-09-25 06:53:23,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:23,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776292131] [2020-09-25 06:53:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:23,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:27,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:27,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 06:53:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3241 [2020-09-25 06:53:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:27,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:53:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:53:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 06:53:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:27,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:27,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:27,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:27,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:27,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:27,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:27,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:27,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:27,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:27,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:27,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:27,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:27,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:27,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:27,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:27,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:27,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:27,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:27,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:27,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:27,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:27,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:27,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:27,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:53:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:27,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:27,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:27,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:27,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:27,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 06:53:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:27,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:27,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:27,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:53:27,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:27,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:27,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:27,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:27,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:27,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:27,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:53:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:27,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:27,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 06:53:27,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776292131] [2020-09-25 06:53:27,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:27,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:53:27,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624642999] [2020-09-25 06:53:27,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:53:27,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:27,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:53:27,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:53:27,302 INFO L87 Difference]: Start difference. First operand 177 states and 205 transitions. Second operand 11 states. [2020-09-25 06:53:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:27,641 INFO L93 Difference]: Finished difference Result 231 states and 270 transitions. [2020-09-25 06:53:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:53:27,642 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 06:53:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:27,643 INFO L225 Difference]: With dead ends: 231 [2020-09-25 06:53:27,644 INFO L226 Difference]: Without dead ends: 226 [2020-09-25 06:53:27,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:53:27,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-25 06:53:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 218. [2020-09-25 06:53:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-25 06:53:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 255 transitions. [2020-09-25 06:53:27,661 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 255 transitions. Word has length 67 [2020-09-25 06:53:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:27,662 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 255 transitions. [2020-09-25 06:53:27,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:53:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 255 transitions. [2020-09-25 06:53:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 06:53:27,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:27,663 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:27,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 06:53:27,664 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:27,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:27,664 INFO L82 PathProgramCache]: Analyzing trace with hash 869213219, now seen corresponding path program 2 times [2020-09-25 06:53:27,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:27,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432911525] [2020-09-25 06:53:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:31,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:31,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:53:31,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3991 [2020-09-25 06:53:31,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:31,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:53:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:53:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 06:53:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:31,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:31,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:31,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:31,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:31,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:31,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:31,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:31,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:31,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:31,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:31,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:31,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:31,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:31,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:31,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:31,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:31,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:31,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:31,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:31,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:31,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:31,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:53:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:31,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:31,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:31,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:53:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:31,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:31,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:31,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:31,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:31,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 06:53:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:31,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:31,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:31,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:53:31,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:31,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 06:53:31,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432911525] [2020-09-25 06:53:31,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:31,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:53:31,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099515132] [2020-09-25 06:53:31,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:53:31,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:31,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:53:31,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:53:31,925 INFO L87 Difference]: Start difference. First operand 218 states and 255 transitions. Second operand 12 states. [2020-09-25 06:53:32,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:32,305 INFO L93 Difference]: Finished difference Result 228 states and 265 transitions. [2020-09-25 06:53:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:53:32,306 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-09-25 06:53:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:32,307 INFO L225 Difference]: With dead ends: 228 [2020-09-25 06:53:32,308 INFO L226 Difference]: Without dead ends: 223 [2020-09-25 06:53:32,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:53:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-09-25 06:53:32,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-09-25 06:53:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-09-25 06:53:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 256 transitions. [2020-09-25 06:53:32,322 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 256 transitions. Word has length 70 [2020-09-25 06:53:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:32,322 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 256 transitions. [2020-09-25 06:53:32,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:53:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 256 transitions. [2020-09-25 06:53:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 06:53:32,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:32,324 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:32,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 06:53:32,324 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:32,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:32,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1269119089, now seen corresponding path program 1 times [2020-09-25 06:53:32,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:32,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647244422] [2020-09-25 06:53:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:32,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:32,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:37,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 06:53:37,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:53:37,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:53:37,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:37,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:53:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:53:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 06:53:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:37,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:37,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:37,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:37,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:37,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:37,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:37,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:37,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:37,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:37,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:37,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:37,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:53:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:37,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:37,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:37,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:37,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 06:53:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:37,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:37,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:37,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:37,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:37,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:37,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:53:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:37,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:37,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:37,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:37,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:37,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 06:53:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:37,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:37,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:37,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:37,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:37,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:37,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 06:53:37,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647244422] [2020-09-25 06:53:37,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:37,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 06:53:37,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649830025] [2020-09-25 06:53:37,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:53:37,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:37,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:53:37,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:53:37,499 INFO L87 Difference]: Start difference. First operand 221 states and 256 transitions. Second operand 11 states. [2020-09-25 06:53:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:37,835 INFO L93 Difference]: Finished difference Result 240 states and 278 transitions. [2020-09-25 06:53:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:53:37,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-09-25 06:53:37,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:37,838 INFO L225 Difference]: With dead ends: 240 [2020-09-25 06:53:37,838 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 06:53:37,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:53:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 06:53:37,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 231. [2020-09-25 06:53:37,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-25 06:53:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 267 transitions. [2020-09-25 06:53:37,873 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 267 transitions. Word has length 76 [2020-09-25 06:53:37,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:37,874 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 267 transitions. [2020-09-25 06:53:37,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:53:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 267 transitions. [2020-09-25 06:53:37,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 06:53:37,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:37,876 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:37,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 06:53:37,877 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:37,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:37,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1147260786, now seen corresponding path program 1 times [2020-09-25 06:53:37,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:37,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521968253] [2020-09-25 06:53:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:37,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:53:42,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:53:42,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4912 [2020-09-25 06:53:42,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:53:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:53:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:53:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:42,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:42,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:42,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:42,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:42,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:42,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:53:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:42,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:42,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:53:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:42,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:42,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 06:53:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:42,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:42,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:53:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:42,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 06:53:42,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521968253] [2020-09-25 06:53:42,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:42,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 06:53:42,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334633771] [2020-09-25 06:53:42,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:53:42,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:42,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:53:42,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:53:42,987 INFO L87 Difference]: Start difference. First operand 231 states and 267 transitions. Second operand 11 states. [2020-09-25 06:53:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:43,273 INFO L93 Difference]: Finished difference Result 270 states and 315 transitions. [2020-09-25 06:53:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:53:43,274 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 06:53:43,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:43,276 INFO L225 Difference]: With dead ends: 270 [2020-09-25 06:53:43,276 INFO L226 Difference]: Without dead ends: 268 [2020-09-25 06:53:43,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:53:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-25 06:53:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 261. [2020-09-25 06:53:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 06:53:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 304 transitions. [2020-09-25 06:53:43,292 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 304 transitions. Word has length 79 [2020-09-25 06:53:43,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:43,292 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 304 transitions. [2020-09-25 06:53:43,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:53:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 304 transitions. [2020-09-25 06:53:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 06:53:43,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:43,294 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:43,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 06:53:43,294 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:43,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:43,294 INFO L82 PathProgramCache]: Analyzing trace with hash 341113206, now seen corresponding path program 2 times [2020-09-25 06:53:43,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:43,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627031709] [2020-09-25 06:53:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:43,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:53:48,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:53:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:53:48,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:53:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:53:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:53:48,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:48,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:48,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:48,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:48,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:53:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:48,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:48,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:53:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:48,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:48,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 06:53:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:48,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:48,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 06:53:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:48,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 06:53:48,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627031709] [2020-09-25 06:53:48,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:48,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 06:53:48,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021934957] [2020-09-25 06:53:48,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:53:48,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:48,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:53:48,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:53:48,455 INFO L87 Difference]: Start difference. First operand 261 states and 304 transitions. Second operand 11 states. [2020-09-25 06:53:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:48,768 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2020-09-25 06:53:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:53:48,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 06:53:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:48,770 INFO L225 Difference]: With dead ends: 300 [2020-09-25 06:53:48,771 INFO L226 Difference]: Without dead ends: 298 [2020-09-25 06:53:48,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:53:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-25 06:53:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-09-25 06:53:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 06:53:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 304 transitions. [2020-09-25 06:53:48,790 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 304 transitions. Word has length 79 [2020-09-25 06:53:48,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:48,791 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 304 transitions. [2020-09-25 06:53:48,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:53:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 304 transitions. [2020-09-25 06:53:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 06:53:48,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:48,793 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:48,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 06:53:48,794 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:48,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:48,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1759613834, now seen corresponding path program 1 times [2020-09-25 06:53:48,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:48,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051806733] [2020-09-25 06:53:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:53:53,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:53:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:53:53,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:53:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:53:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 06:53:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:53:53,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:53,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:53,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:53,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:53,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:53:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:53:53,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:53,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:53:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:53:53,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:53,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:53:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:53,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 06:53:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:53,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:53:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:53:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:53:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:53,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 06:53:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:53,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 06:53:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:54,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:54,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:54,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:54,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:54,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-25 06:53:54,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051806733] [2020-09-25 06:53:54,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:54,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:53:54,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54877790] [2020-09-25 06:53:54,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:53:54,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:53:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:53:54,025 INFO L87 Difference]: Start difference. First operand 261 states and 304 transitions. Second operand 11 states. [2020-09-25 06:53:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:54,341 INFO L93 Difference]: Finished difference Result 272 states and 318 transitions. [2020-09-25 06:53:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:53:54,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2020-09-25 06:53:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:54,343 INFO L225 Difference]: With dead ends: 272 [2020-09-25 06:53:54,343 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 06:53:54,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:53:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 06:53:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2020-09-25 06:53:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 06:53:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 311 transitions. [2020-09-25 06:53:54,364 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 311 transitions. Word has length 81 [2020-09-25 06:53:54,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:54,365 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 311 transitions. [2020-09-25 06:53:54,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:53:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 311 transitions. [2020-09-25 06:53:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 06:53:54,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:54,370 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:54,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 06:53:54,370 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:54,372 INFO L82 PathProgramCache]: Analyzing trace with hash -343631243, now seen corresponding path program 1 times [2020-09-25 06:53:54,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:54,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654452749] [2020-09-25 06:53:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:54,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking...