/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/bor1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:34:52,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:34:52,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:34:53,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:34:53,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:34:53,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:34:53,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:34:53,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:34:53,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:34:53,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:34:53,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:34:53,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:34:53,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:34:53,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:34:53,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:34:53,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:34:53,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:34:53,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:34:53,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:34:53,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:34:53,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:34:53,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:34:53,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:34:53,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:34:53,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:34:53,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:34:53,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:34:53,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:34:53,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:34:53,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:34:53,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:34:53,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:34:53,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:34:53,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:34:53,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:34:53,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:34:53,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:34:53,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:34:53,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:34:53,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:34:53,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:34:53,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 09:34:53,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:34:53,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:34:53,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:34:53,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:34:53,127 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:34:53,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:34:53,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:34:53,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:34:53,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:34:53,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:34:53,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:34:53,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:34:53,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:34:53,129 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:34:53,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:34:53,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:34:53,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:34:53,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:34:53,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:34:53,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:34:53,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:34:53,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:34:53,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:34:53,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:34:53,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:34:53,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:34:53,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:34:53,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:34:53,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:34:53,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 09:34:53,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:34:53,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:34:53,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:34:53,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:34:53,471 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:34:53,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor1.i [2020-10-12 09:34:53,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c626ba834/d309244f86b842e2899a6c910ae8e1ac/FLAG9120255e7 [2020-10-12 09:34:53,919 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:34:53,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor1.i [2020-10-12 09:34:53,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c626ba834/d309244f86b842e2899a6c910ae8e1ac/FLAG9120255e7 [2020-10-12 09:34:54,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c626ba834/d309244f86b842e2899a6c910ae8e1ac [2020-10-12 09:34:54,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:34:54,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:34:54,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:34:54,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:34:54,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:34:54,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:34:54" (1/1) ... [2020-10-12 09:34:54,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ce1d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54, skipping insertion in model container [2020-10-12 09:34:54,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:34:54" (1/1) ... [2020-10-12 09:34:54,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:34:54,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:34:54,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:34:54,582 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:34:54,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:34:54,623 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:34:54,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54 WrapperNode [2020-10-12 09:34:54,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:34:54,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:34:54,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:34:54,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:34:54,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54" (1/1) ... [2020-10-12 09:34:54,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54" (1/1) ... [2020-10-12 09:34:54,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54" (1/1) ... [2020-10-12 09:34:54,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54" (1/1) ... [2020-10-12 09:34:54,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54" (1/1) ... [2020-10-12 09:34:54,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54" (1/1) ... [2020-10-12 09:34:54,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54" (1/1) ... [2020-10-12 09:34:54,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:34:54,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:34:54,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:34:54,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:34:54,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:34:54,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:34:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:34:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-12 09:34:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:34:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:34:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:34:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-12 09:34:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:34:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:34:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:34:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:34:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:34:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:34:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:34:55,096 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:34:55,096 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 09:34:55,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:34:55 BoogieIcfgContainer [2020-10-12 09:34:55,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:34:55,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:34:55,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:34:55,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:34:55,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:34:54" (1/3) ... [2020-10-12 09:34:55,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afab378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:34:55, skipping insertion in model container [2020-10-12 09:34:55,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:54" (2/3) ... [2020-10-12 09:34:55,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afab378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:34:55, skipping insertion in model container [2020-10-12 09:34:55,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:34:55" (3/3) ... [2020-10-12 09:34:55,111 INFO L109 eAbstractionObserver]: Analyzing ICFG bor1.i [2020-10-12 09:34:55,124 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:34:55,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:34:55,183 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:34:55,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:34:55,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:34:55,232 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:34:55,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:34:55,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:34:55,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:34:55,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:34:55,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:34:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 09:34:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 09:34:55,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:34:55,276 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:34:55,277 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:34:55,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:34:55,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-12 09:34:55,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:34:55,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598754044] [2020-10-12 09:34:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:34:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:55,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:55,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:56,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:34:56,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:34:56,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-10-12 09:34:56,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:34:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 09:34:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:34:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 09:34:56,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:34:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:56,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:34:56,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:34:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 09:34:56,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:34:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:34:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:34:56,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:34:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:34:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:56,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:56,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:34:56,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:34:56,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 09:34:56,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:34:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:34:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:34:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:34:56,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:34:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:56,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:34:56,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:34:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 09:34:56,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:34:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:34:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:34:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:34:56,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:34:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:34:56,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:34:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 09:34:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:34:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:34:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:34:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:34:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:34:56,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598754044] [2020-10-12 09:34:56,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:34:56,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 09:34:56,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067637380] [2020-10-12 09:34:56,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 09:34:56,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:34:56,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 09:34:56,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 09:34:56,469 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-10-12 09:34:56,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:34:56,586 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2020-10-12 09:34:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 09:34:56,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-12 09:34:56,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:34:56,597 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:34:56,597 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 09:34:56,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:34:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 09:34:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-12 09:34:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 09:34:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-12 09:34:56,641 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-12 09:34:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:34:56,641 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-12 09:34:56,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 09:34:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-12 09:34:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 09:34:56,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:34:56,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:34:56,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:34:56,645 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:34:56,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:34:56,645 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-12 09:34:56,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:34:56,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682619157] [2020-10-12 09:34:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:34:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:56,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:58,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:58,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:34:58,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:34:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2244 [2020-10-12 09:34:58,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:34:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 09:34:58,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:34:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:34:58,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:34:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:58,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:58,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:34:58,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:34:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:34:58,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:34:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:34:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:34:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:34:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:34:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:58,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:58,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:34:58,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:34:58,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 09:34:58,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:34:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:34:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:34:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:34:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 09:34:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:58,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:59,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:34:59,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:34:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 09:34:59,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:34:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:34:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:34:59,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:34:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 09:34:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:59,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:34:59,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:34:59,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:34:59,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 09:34:59,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:34:59,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:34:59,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:34:59,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:34:59,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:34:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 09:34:59,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682619157] [2020-10-12 09:34:59,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:34:59,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 09:34:59,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958255432] [2020-10-12 09:34:59,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 09:34:59,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:34:59,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 09:34:59,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:34:59,083 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-10-12 09:34:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:34:59,234 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-12 09:34:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 09:34:59,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-12 09:34:59,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:34:59,236 INFO L225 Difference]: With dead ends: 48 [2020-10-12 09:34:59,236 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 09:34:59,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:34:59,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 09:34:59,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 09:34:59,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 09:34:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 09:34:59,253 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2020-10-12 09:34:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:34:59,253 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 09:34:59,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 09:34:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 09:34:59,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 09:34:59,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:34:59,257 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:34:59,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:34:59,258 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:34:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:34:59,259 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-12 09:34:59,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:34:59,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729959062] [2020-10-12 09:34:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:34:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:34:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:34:59,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:35:04,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4737 [2020-10-12 09:35:04,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:04,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:04,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:04,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:04,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:04,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:04,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:04,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:04,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:04,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:35:04,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:04,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 09:35:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:04,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:04,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:04,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:35:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:04,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 09:35:04,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:35:04,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729959062] [2020-10-12 09:35:04,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:04,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:35:04,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653804331] [2020-10-12 09:35:04,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:35:04,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:04,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:35:04,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:35:04,171 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-12 09:35:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:04,309 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-12 09:35:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:35:04,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 09:35:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:04,311 INFO L225 Difference]: With dead ends: 52 [2020-10-12 09:35:04,311 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 09:35:04,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:35:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 09:35:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-12 09:35:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 09:35:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 09:35:04,320 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-12 09:35:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:04,320 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 09:35:04,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:35:04,321 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 09:35:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 09:35:04,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:04,322 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:04,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:35:04,323 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:04,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1824311803, now seen corresponding path program 3 times [2020-10-12 09:35:04,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:04,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094485921] [2020-10-12 09:35:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:35:09,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:35:09,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:09,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:09,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:35:09,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:09,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:09,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:35:09,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:09,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 09:35:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:09,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:09,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:35:09,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:09,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:09,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:09,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:09,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 09:35:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:09,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 09:35:09,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:09,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 09:35:09,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094485921] [2020-10-12 09:35:09,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:09,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:35:09,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913836071] [2020-10-12 09:35:09,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:35:09,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:09,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:35:09,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:09,589 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-12 09:35:09,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:09,805 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-12 09:35:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:35:09,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-12 09:35:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:09,807 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:35:09,807 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 09:35:09,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:09,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 09:35:09,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 09:35:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 09:35:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 09:35:09,818 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-12 09:35:09,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:09,818 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 09:35:09,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:35:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 09:35:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 09:35:09,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:09,821 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:09,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:35:09,821 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:09,822 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-12 09:35:09,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:09,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043005194] [2020-10-12 09:35:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:10,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:35:14,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:35:14,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 09:35:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:14,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:14,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:14,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:14,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:14,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:14,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:14,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:14,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 09:35:14,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 09:35:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 09:35:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:14,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 09:35:14,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 09:35:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:15,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:15,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:15,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 09:35:15,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:15,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 09:35:15,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043005194] [2020-10-12 09:35:15,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:15,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 09:35:15,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353588337] [2020-10-12 09:35:15,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 09:35:15,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:15,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 09:35:15,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:35:15,040 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 09:35:15,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:15,198 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 09:35:15,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:35:15,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 09:35:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:15,200 INFO L225 Difference]: With dead ends: 60 [2020-10-12 09:35:15,200 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 09:35:15,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:35:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 09:35:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 09:35:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 09:35:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 09:35:15,207 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 09:35:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:15,208 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 09:35:15,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 09:35:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 09:35:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 09:35:15,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:15,209 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:15,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:35:15,210 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-12 09:35:15,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:15,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390147154] [2020-10-12 09:35:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:20,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:35:20,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:20,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:35:20,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 09:35:20,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:20,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:20,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:20,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:20,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:20,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:20,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:20,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:20,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:20,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:20,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:20,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:20,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:20,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:20,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:35:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:20,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:20,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:20,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:20,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:20,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 09:35:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:20,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:20,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:20,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 09:35:20,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 09:35:20,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390147154] [2020-10-12 09:35:20,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:20,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 09:35:20,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768622956] [2020-10-12 09:35:20,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 09:35:20,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:20,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 09:35:20,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:35:20,400 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-12 09:35:20,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:20,573 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-12 09:35:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:35:20,574 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-12 09:35:20,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:20,575 INFO L225 Difference]: With dead ends: 64 [2020-10-12 09:35:20,575 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 09:35:20,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:35:20,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 09:35:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 09:35:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:35:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 09:35:20,581 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-12 09:35:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:20,582 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 09:35:20,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 09:35:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 09:35:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 09:35:20,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:20,583 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:20,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:35:20,583 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:20,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:20,584 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-12 09:35:20,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:20,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785771324] [2020-10-12 09:35:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:35:25,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:35:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 09:35:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:25,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:25,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:25,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:25,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:25,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:25,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:25,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 09:35:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:25,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:25,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 09:35:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:25,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:35:25,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:25,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 09:35:25,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785771324] [2020-10-12 09:35:25,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:25,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:35:25,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573601231] [2020-10-12 09:35:25,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:35:25,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:25,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:35:25,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:35:25,776 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-12 09:35:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:25,965 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 09:35:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 09:35:25,965 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 09:35:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:25,966 INFO L225 Difference]: With dead ends: 68 [2020-10-12 09:35:25,966 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 09:35:25,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:35:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 09:35:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 09:35:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 09:35:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 09:35:25,973 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-12 09:35:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:25,973 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 09:35:25,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:35:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 09:35:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 09:35:25,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:25,975 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:25,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:35:25,975 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:25,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-12 09:35:25,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:25,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531197478] [2020-10-12 09:35:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:30,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:35:30,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:35:30,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:31,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:31,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:31,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:31,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:31,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:31,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:31,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:31,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:31,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:35:31,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:31,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 09:35:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:31,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:31,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:31,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 09:35:31,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:31,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 09:35:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:31,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:31,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:31,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 09:35:31,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 09:35:31,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531197478] [2020-10-12 09:35:31,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:31,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:35:31,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69905488] [2020-10-12 09:35:31,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:35:31,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:31,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:35:31,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:31,202 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 09:35:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:31,419 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 09:35:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 09:35:31,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 09:35:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:31,421 INFO L225 Difference]: With dead ends: 72 [2020-10-12 09:35:31,421 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 09:35:31,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:35:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 09:35:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 09:35:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 09:35:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 09:35:31,428 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 09:35:31,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:31,429 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 09:35:31,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:35:31,429 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 09:35:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 09:35:31,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:31,430 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:31,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:35:31,431 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:31,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:31,431 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-12 09:35:31,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:31,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80903786] [2020-10-12 09:35:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 09:35:36,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:36,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:35:36,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:36,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-12 09:35:36,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:36,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:36,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:36,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:36,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:36,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:35:36,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:36,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:36,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:36,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 09:35:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:36,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:36,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:35:36,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 09:35:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:36,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:35:36,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 09:35:36,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80903786] [2020-10-12 09:35:36,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:36,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:35:36,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704580174] [2020-10-12 09:35:36,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:35:36,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:36,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:35:36,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:35:36,666 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 09:35:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:36,922 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 09:35:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:35:36,923 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 09:35:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:36,924 INFO L225 Difference]: With dead ends: 76 [2020-10-12 09:35:36,924 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 09:35:36,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:35:36,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 09:35:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 09:35:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 09:35:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 09:35:36,931 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 09:35:36,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:36,931 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 09:35:36,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:35:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 09:35:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 09:35:36,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:36,933 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:36,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:35:36,933 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:36,933 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-12 09:35:36,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:36,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772863490] [2020-10-12 09:35:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:41,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 09:35:41,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:41,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:35:41,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 09:35:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:41,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:41,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:41,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:41,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:35:41,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:42,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:35:42,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 09:35:42,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:42,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:42,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 09:35:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:42,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:35:42,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:42,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 09:35:42,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 09:35:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:42,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:35:42,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:42,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 09:35:42,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:42,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 09:35:42,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772863490] [2020-10-12 09:35:42,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:42,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:35:42,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470110119] [2020-10-12 09:35:42,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:35:42,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:42,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:35:42,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:35:42,187 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 09:35:42,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:42,475 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-12 09:35:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:35:42,475 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 09:35:42,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:42,476 INFO L225 Difference]: With dead ends: 80 [2020-10-12 09:35:42,476 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:35:42,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:35:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:35:42,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-12 09:35:42,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 09:35:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 09:35:42,484 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 09:35:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:42,484 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 09:35:42,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:35:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 09:35:42,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 09:35:42,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:42,485 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:42,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:35:42,486 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:42,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:42,486 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-12 09:35:42,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:42,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775500808] [2020-10-12 09:35:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 09:35:47,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:35:47,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 09:35:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:47,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:47,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:47,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:47,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:47,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:47,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:35:47,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:47,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 09:35:47,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:47,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 09:35:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:47,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:35:47,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:47,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 09:35:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:35:47,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:47,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 09:35:47,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775500808] [2020-10-12 09:35:47,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:47,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:35:47,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483746516] [2020-10-12 09:35:47,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:35:47,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:47,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:35:47,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:35:47,729 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-12 09:35:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:48,042 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 09:35:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:35:48,042 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 09:35:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:48,043 INFO L225 Difference]: With dead ends: 84 [2020-10-12 09:35:48,043 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 09:35:48,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:35:48,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 09:35:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-12 09:35:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 09:35:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 09:35:48,050 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-12 09:35:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:48,051 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 09:35:48,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:35:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 09:35:48,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 09:35:48,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:48,052 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:48,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:35:48,052 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-12 09:35:48,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:48,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829225832] [2020-10-12 09:35:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 09:35:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:35:53,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:35:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:53,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:53,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:53,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:53,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:53,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:35:53,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:53,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:35:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:53,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 09:35:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:53,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:35:53,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 09:35:53,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:35:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 09:35:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:53,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:35:53,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:53,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 09:35:53,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:53,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:53,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:53,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:35:53,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 09:35:53,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829225832] [2020-10-12 09:35:53,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:53,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 09:35:53,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261975345] [2020-10-12 09:35:53,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 09:35:53,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:53,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 09:35:53,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:35:53,330 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-12 09:35:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:53,641 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-12 09:35:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 09:35:53,642 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-12 09:35:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:53,643 INFO L225 Difference]: With dead ends: 88 [2020-10-12 09:35:53,643 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 09:35:53,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:35:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 09:35:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 09:35:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 09:35:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 09:35:53,649 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-12 09:35:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:53,650 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 09:35:53,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 09:35:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 09:35:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 09:35:53,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:53,651 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:53,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:35:53,651 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:53,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-12 09:35:53,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:53,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140943235] [2020-10-12 09:35:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:53,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 09:35:58,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:35:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:35:58,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:35:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 09:35:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:35:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:58,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:58,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:35:58,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:58,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:58,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:35:58,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:58,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 09:35:58,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:35:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:35:58,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 09:35:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:35:58,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 09:35:58,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:35:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:35:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 09:35:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:35:58,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 09:35:58,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:35:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:35:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 09:35:58,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140943235] [2020-10-12 09:35:58,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:58,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:35:58,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43659337] [2020-10-12 09:35:58,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:35:58,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:58,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:35:58,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:35:58,961 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-12 09:35:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:59,387 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-12 09:35:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:35:59,388 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-12 09:35:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:59,390 INFO L225 Difference]: With dead ends: 92 [2020-10-12 09:35:59,390 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 09:35:59,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:35:59,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 09:35:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-12 09:35:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 09:35:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 09:35:59,409 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-12 09:35:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:59,412 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 09:35:59,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:35:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 09:35:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 09:35:59,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:59,415 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:59,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:35:59,418 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:59,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:59,419 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-12 09:35:59,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:59,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221728910] [2020-10-12 09:35:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 09:36:04,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:36:04,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:04,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:04,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:04,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:04,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:04,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:04,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:04,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:04,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:04,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:04,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:04,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:04,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 09:36:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:04,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 09:36:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:04,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:04,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 09:36:04,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:36:04,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 09:36:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:04,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:04,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 09:36:04,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 09:36:04,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221728910] [2020-10-12 09:36:04,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:04,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:36:04,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479802357] [2020-10-12 09:36:04,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:36:04,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:04,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:36:04,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:36:04,869 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 09:36:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:05,252 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-12 09:36:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:36:05,252 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 09:36:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:05,253 INFO L225 Difference]: With dead ends: 96 [2020-10-12 09:36:05,253 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 09:36:05,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:36:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 09:36:05,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-12 09:36:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 09:36:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-12 09:36:05,269 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-12 09:36:05,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:05,270 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-12 09:36:05,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:36:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-12 09:36:05,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 09:36:05,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:05,271 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:05,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:36:05,272 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:05,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-12 09:36:05,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:05,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470717242] [2020-10-12 09:36:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 09:36:10,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:36:10,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:36:10,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 09:36:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:10,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:10,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:10,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 09:36:10,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 09:36:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:10,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 09:36:10,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 09:36:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:10,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 09:36:10,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:10,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 09:36:10,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470717242] [2020-10-12 09:36:10,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:10,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:36:10,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896831536] [2020-10-12 09:36:10,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:36:10,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:10,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:36:10,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:36:10,643 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-12 09:36:11,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:11,065 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-12 09:36:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:36:11,065 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-12 09:36:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:11,066 INFO L225 Difference]: With dead ends: 100 [2020-10-12 09:36:11,066 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 09:36:11,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:36:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 09:36:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 09:36:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 09:36:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-12 09:36:11,080 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-12 09:36:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:11,080 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-12 09:36:11,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:36:11,080 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-12 09:36:11,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 09:36:11,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:11,083 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:11,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:36:11,083 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:11,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:11,084 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-12 09:36:11,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:11,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430039601] [2020-10-12 09:36:11,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 09:36:16,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:16,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 09:36:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:16,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:16,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:16,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:16,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:16,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 09:36:16,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 09:36:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:16,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:16,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 09:36:16,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:16,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 09:36:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:16,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 09:36:16,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 09:36:16,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430039601] [2020-10-12 09:36:16,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:16,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 09:36:16,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842746492] [2020-10-12 09:36:16,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 09:36:16,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:16,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 09:36:16,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:36:16,548 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-12 09:36:16,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:16,992 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-12 09:36:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 09:36:16,993 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-12 09:36:16,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:16,994 INFO L225 Difference]: With dead ends: 104 [2020-10-12 09:36:16,994 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 09:36:16,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:36:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 09:36:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 09:36:17,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 09:36:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-12 09:36:17,007 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-12 09:36:17,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:17,007 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-12 09:36:17,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 09:36:17,008 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-12 09:36:17,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 09:36:17,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:17,012 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:17,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 09:36:17,013 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:17,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-12 09:36:17,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:17,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364760687] [2020-10-12 09:36:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 09:36:22,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:36:22,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:22,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:22,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:22,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 09:36:22,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 09:36:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:22,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 09:36:22,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 09:36:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:22,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:22,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 09:36:22,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:22,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 09:36:22,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364760687] [2020-10-12 09:36:22,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:22,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 09:36:22,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485928786] [2020-10-12 09:36:22,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 09:36:22,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:22,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 09:36:22,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:36:22,453 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-12 09:36:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:22,902 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-12 09:36:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:36:22,903 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-12 09:36:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:22,904 INFO L225 Difference]: With dead ends: 108 [2020-10-12 09:36:22,904 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 09:36:22,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:36:22,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 09:36:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 09:36:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 09:36:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 09:36:22,910 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-12 09:36:22,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:22,910 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 09:36:22,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 09:36:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 09:36:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 09:36:22,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:22,912 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:22,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 09:36:22,912 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:22,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:22,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-12 09:36:22,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:22,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538969273] [2020-10-12 09:36:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:27,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:27,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 09:36:27,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:27,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 09:36:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:27,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:27,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:27,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:27,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:36:27,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:27,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:27,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:27,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:28,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:28,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 09:36:28,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:28,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 09:36:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:28,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 09:36:28,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 09:36:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:28,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:28,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 09:36:28,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:28,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-12 09:36:28,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538969273] [2020-10-12 09:36:28,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:28,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 09:36:28,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606109056] [2020-10-12 09:36:28,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 09:36:28,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:28,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 09:36:28,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:36:28,380 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-12 09:36:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:28,864 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-12 09:36:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:36:28,865 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-12 09:36:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:28,866 INFO L225 Difference]: With dead ends: 112 [2020-10-12 09:36:28,866 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 09:36:28,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:36:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 09:36:28,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 09:36:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 09:36:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-12 09:36:28,872 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-12 09:36:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:28,872 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-12 09:36:28,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 09:36:28,872 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-12 09:36:28,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 09:36:28,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:28,874 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:28,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 09:36:28,874 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:28,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:28,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-12 09:36:28,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:28,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610360444] [2020-10-12 09:36:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:33,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:33,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 09:36:33,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:36:33,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 09:36:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:33,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:33,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:33,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:33,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:33,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:33,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:33,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:33,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:33,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 09:36:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:36:34,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 09:36:34,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 09:36:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:36:34,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:34,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 09:36:34,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 09:36:34,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610360444] [2020-10-12 09:36:34,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:34,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 09:36:34,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871456695] [2020-10-12 09:36:34,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 09:36:34,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:34,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 09:36:34,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:36:34,389 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-12 09:36:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:34,945 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-12 09:36:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 09:36:34,946 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-12 09:36:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:34,947 INFO L225 Difference]: With dead ends: 116 [2020-10-12 09:36:34,947 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 09:36:34,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:36:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 09:36:34,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-12 09:36:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 09:36:34,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-12 09:36:34,957 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-12 09:36:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:34,960 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-12 09:36:34,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 09:36:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-12 09:36:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 09:36:34,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:34,963 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:34,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 09:36:34,964 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:34,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-12 09:36:34,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:34,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064142864] [2020-10-12 09:36:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:39,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:39,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 09:36:39,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:39,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:39,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:39,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:39,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:39,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:36:40,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 09:36:40,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 09:36:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:36:40,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:40,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 09:36:40,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:40,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:40,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:40,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 09:36:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:36:40,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:40,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 09:36:40,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:40,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-12 09:36:40,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064142864] [2020-10-12 09:36:40,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:40,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 09:36:40,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097508951] [2020-10-12 09:36:40,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 09:36:40,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 09:36:40,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:36:40,615 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-12 09:36:41,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:41,173 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-12 09:36:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 09:36:41,173 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-12 09:36:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:41,174 INFO L225 Difference]: With dead ends: 120 [2020-10-12 09:36:41,174 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 09:36:41,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 09:36:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 09:36:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 09:36:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 09:36:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 09:36:41,189 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-12 09:36:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:41,189 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 09:36:41,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 09:36:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 09:36:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 09:36:41,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:41,195 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:41,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 09:36:41,195 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:41,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:41,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-12 09:36:41,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:41,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728855322] [2020-10-12 09:36:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 09:36:46,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:36:46,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 09:36:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:46,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:46,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:36:46,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 09:36:46,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 09:36:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:36:46,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 09:36:46,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 09:36:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:36:46,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 09:36:46,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:46,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:46,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 09:36:46,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728855322] [2020-10-12 09:36:46,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:46,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 09:36:46,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472167330] [2020-10-12 09:36:46,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 09:36:46,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:46,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 09:36:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:36:46,861 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-12 09:36:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:47,492 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-12 09:36:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 09:36:47,493 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-12 09:36:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:47,494 INFO L225 Difference]: With dead ends: 124 [2020-10-12 09:36:47,494 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 09:36:47,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 09:36:47,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 09:36:47,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 09:36:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 09:36:47,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-12 09:36:47,500 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-12 09:36:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:47,500 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-12 09:36:47,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 09:36:47,501 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-12 09:36:47,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 09:36:47,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:47,502 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:47,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 09:36:47,502 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:47,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:47,503 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-12 09:36:47,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:47,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578902889] [2020-10-12 09:36:47,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 09:36:52,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:52,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:36:52,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 09:36:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:52,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:52,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:52,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:36:52,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 09:36:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 09:36:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:53,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:36:53,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 09:36:53,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 09:36:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:53,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:36:53,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 09:36:53,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 09:36:53,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578902889] [2020-10-12 09:36:53,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:53,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:36:53,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192082387] [2020-10-12 09:36:53,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:36:53,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:53,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:36:53,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:36:53,174 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-12 09:36:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:53,836 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-12 09:36:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:36:53,839 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-12 09:36:53,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:53,840 INFO L225 Difference]: With dead ends: 128 [2020-10-12 09:36:53,840 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 09:36:53,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 09:36:53,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 09:36:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 09:36:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 09:36:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-12 09:36:53,854 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-12 09:36:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:53,855 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-12 09:36:53,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:36:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-12 09:36:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 09:36:53,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:53,858 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:53,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 09:36:53,858 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:53,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-12 09:36:53,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:53,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570693722] [2020-10-12 09:36:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:58,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 09:36:58,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:58,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:36:58,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:36:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-12 09:36:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:36:58,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:58,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:58,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:58,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:36:58,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:58,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:59,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:36:59,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 09:36:59,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:36:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:36:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:59,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 09:36:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:59,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:59,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:36:59,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 09:36:59,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:36:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:36:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 09:36:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:59,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:36:59,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:59,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 09:36:59,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:36:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:36:59,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-12 09:36:59,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570693722] [2020-10-12 09:36:59,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:59,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 09:36:59,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560490716] [2020-10-12 09:36:59,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 09:36:59,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:59,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 09:36:59,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:36:59,559 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-12 09:37:00,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:00,220 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-12 09:37:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 09:37:00,220 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-12 09:37:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:00,221 INFO L225 Difference]: With dead ends: 132 [2020-10-12 09:37:00,221 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 09:37:00,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 09:37:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 09:37:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 09:37:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 09:37:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-12 09:37:00,228 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-12 09:37:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:00,228 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-12 09:37:00,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 09:37:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-12 09:37:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 09:37:00,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:00,230 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:00,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 09:37:00,230 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:00,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:00,230 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-12 09:37:00,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:00,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702468202] [2020-10-12 09:37:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:05,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 09:37:05,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:37:05,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 09:37:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:05,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:05,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:05,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:05,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:05,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:05,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:05,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:05,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 09:37:05,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:05,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 09:37:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:05,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:05,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 09:37:05,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:05,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 09:37:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:05,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:06,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:06,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:06,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 09:37:06,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:06,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 09:37:06,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702468202] [2020-10-12 09:37:06,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:06,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 09:37:06,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363738780] [2020-10-12 09:37:06,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 09:37:06,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:06,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 09:37:06,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:37:06,126 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-12 09:37:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:07,052 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-12 09:37:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 09:37:07,052 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-12 09:37:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:07,053 INFO L225 Difference]: With dead ends: 136 [2020-10-12 09:37:07,053 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 09:37:07,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 09:37:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 09:37:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 09:37:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 09:37:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-12 09:37:07,059 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-12 09:37:07,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:07,059 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-12 09:37:07,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 09:37:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-12 09:37:07,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 09:37:07,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:07,061 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:07,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 09:37:07,061 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:07,061 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-12 09:37:07,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:07,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581563447] [2020-10-12 09:37:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:12,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 09:37:12,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:37:12,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:12,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:12,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:12,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:12,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:12,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:12,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:12,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:12,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:12,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 09:37:12,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:12,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 09:37:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:13,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 09:37:13,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:13,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:13,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 09:37:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:13,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:13,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:13,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:13,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:13,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 09:37:13,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:13,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 09:37:13,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581563447] [2020-10-12 09:37:13,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:13,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 09:37:13,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126912373] [2020-10-12 09:37:13,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 09:37:13,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:13,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 09:37:13,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:37:13,280 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-12 09:37:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:14,085 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-12 09:37:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 09:37:14,085 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-12 09:37:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:14,086 INFO L225 Difference]: With dead ends: 140 [2020-10-12 09:37:14,086 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 09:37:14,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 09:37:14,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 09:37:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-12 09:37:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 09:37:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 09:37:14,095 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-12 09:37:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:14,095 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 09:37:14,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 09:37:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 09:37:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 09:37:14,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:14,097 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:14,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 09:37:14,097 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:14,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-12 09:37:14,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:14,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768120967] [2020-10-12 09:37:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 09:37:19,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:19,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:37:19,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 09:37:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:19,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:19,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:19,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:19,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:19,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:19,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:19,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 09:37:19,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:19,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 09:37:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:19,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:19,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 09:37:19,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:19,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 09:37:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 09:37:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 09:37:19,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768120967] [2020-10-12 09:37:19,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:19,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 09:37:19,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984462476] [2020-10-12 09:37:19,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 09:37:19,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:19,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 09:37:19,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:37:19,941 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-12 09:37:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:20,799 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-12 09:37:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 09:37:20,800 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-12 09:37:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:20,801 INFO L225 Difference]: With dead ends: 144 [2020-10-12 09:37:20,801 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 09:37:20,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 09:37:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 09:37:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-12 09:37:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 09:37:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 09:37:20,808 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-12 09:37:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:20,808 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 09:37:20,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 09:37:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 09:37:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 09:37:20,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:20,809 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:20,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 09:37:20,809 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:20,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-12 09:37:20,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:20,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193613857] [2020-10-12 09:37:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:20,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:20,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:25,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 09:37:25,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:37:25,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:25,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:25,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:25,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:25,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:25,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:25,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:25,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 09:37:25,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:25,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:25,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 09:37:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:26,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:26,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 09:37:26,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 09:37:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:26,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:26,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:26,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 09:37:26,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-12 09:37:26,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193613857] [2020-10-12 09:37:26,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:26,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 09:37:26,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696108292] [2020-10-12 09:37:26,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 09:37:26,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:26,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 09:37:26,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:37:26,757 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-12 09:37:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:27,821 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-12 09:37:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 09:37:27,821 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-12 09:37:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:27,822 INFO L225 Difference]: With dead ends: 148 [2020-10-12 09:37:27,823 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 09:37:27,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 09:37:27,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 09:37:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 09:37:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 09:37:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-12 09:37:27,830 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-12 09:37:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:27,830 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-12 09:37:27,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 09:37:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-12 09:37:27,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 09:37:27,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:27,832 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:27,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 09:37:27,832 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:27,833 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-12 09:37:27,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:27,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022891157] [2020-10-12 09:37:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:27,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:32,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 09:37:32,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:32,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:32,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:32,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:32,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:32,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:33,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:37:33,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 09:37:33,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 09:37:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:33,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:37:33,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 09:37:33,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:33,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:33,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:33,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 09:37:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:33,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:37:33,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 09:37:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 09:37:33,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022891157] [2020-10-12 09:37:33,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:33,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 09:37:33,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387391252] [2020-10-12 09:37:33,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 09:37:33,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:33,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 09:37:33,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:37:33,782 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-12 09:37:34,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:34,665 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-12 09:37:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 09:37:34,668 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-12 09:37:34,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:34,669 INFO L225 Difference]: With dead ends: 152 [2020-10-12 09:37:34,669 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 09:37:34,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 09:37:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 09:37:34,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 09:37:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 09:37:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-12 09:37:34,675 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-12 09:37:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:34,676 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-12 09:37:34,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 09:37:34,676 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-12 09:37:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 09:37:34,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:34,677 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:34,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 09:37:34,678 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:34,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:34,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-12 09:37:34,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:34,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920019034] [2020-10-12 09:37:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:34,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:34,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:34,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 09:37:39,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 09:37:39,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:39,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:39,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:39,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:39,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:39,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:39,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:39,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:39,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:37:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 09:37:39,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:40,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 09:37:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-12 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:40,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 09:37:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:40,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:37:40,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 09:37:40,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-12 09:37:40,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920019034] [2020-10-12 09:37:40,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:40,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 09:37:40,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892896062] [2020-10-12 09:37:40,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 09:37:40,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:40,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 09:37:40,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:37:40,698 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-12 09:37:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:41,712 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-12 09:37:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 09:37:41,712 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-12 09:37:41,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:41,713 INFO L225 Difference]: With dead ends: 156 [2020-10-12 09:37:41,713 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 09:37:41,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 09:37:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 09:37:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-12 09:37:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 09:37:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-12 09:37:41,720 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-12 09:37:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:41,720 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-12 09:37:41,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 09:37:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-12 09:37:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-12 09:37:41,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:41,722 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:41,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 09:37:41,722 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:41,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-12 09:37:41,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:41,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575078471] [2020-10-12 09:37:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:41,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 09:37:46,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:37:46,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:46,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:46,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:47,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 09:37:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:47,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:37:47,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:47,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 09:37:47,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:47,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:47,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 09:37:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:47,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:37:47,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 09:37:47,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 09:37:47,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575078471] [2020-10-12 09:37:47,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:47,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 09:37:47,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111001392] [2020-10-12 09:37:47,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 09:37:47,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:47,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 09:37:47,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:37:47,761 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-12 09:37:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:48,834 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-12 09:37:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 09:37:48,835 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-12 09:37:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:48,836 INFO L225 Difference]: With dead ends: 160 [2020-10-12 09:37:48,836 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 09:37:48,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 09:37:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 09:37:48,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-12 09:37:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 09:37:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-12 09:37:48,847 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-12 09:37:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:48,847 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-12 09:37:48,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 09:37:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-12 09:37:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 09:37:48,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:48,849 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:48,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 09:37:48,849 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:48,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-12 09:37:48,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:48,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3075457] [2020-10-12 09:37:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:53,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 09:37:53,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:53,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:37:53,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:37:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:37:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:53,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:53,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:53,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:53,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:53,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:37:54,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 09:37:54,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:37:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:37:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 09:37:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:54,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:37:54,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 09:37:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:54,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:37:54,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 09:37:54,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:37:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:37:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 09:37:54,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3075457] [2020-10-12 09:37:54,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:54,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 09:37:54,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213571444] [2020-10-12 09:37:54,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 09:37:54,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:54,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 09:37:54,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:37:54,934 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-12 09:37:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:56,065 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-12 09:37:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 09:37:56,066 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-12 09:37:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:56,067 INFO L225 Difference]: With dead ends: 164 [2020-10-12 09:37:56,067 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 09:37:56,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 09:37:56,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 09:37:56,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-12 09:37:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 09:37:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-12 09:37:56,073 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-12 09:37:56,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:56,073 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-12 09:37:56,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 09:37:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-12 09:37:56,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 09:37:56,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:56,075 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:56,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 09:37:56,075 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:56,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-12 09:37:56,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:56,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005200326] [2020-10-12 09:37:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 09:38:01,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:38:01,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:01,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:01,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:01,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 09:38:01,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 09:38:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:02,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:02,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:02,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 09:38:02,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:02,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:02,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 09:38:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:02,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:02,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:02,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:02,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 09:38:02,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:02,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-12 09:38:02,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005200326] [2020-10-12 09:38:02,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:02,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 09:38:02,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589786836] [2020-10-12 09:38:02,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 09:38:02,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:02,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 09:38:02,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:38:02,232 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-12 09:38:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:03,384 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-12 09:38:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 09:38:03,385 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-12 09:38:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:03,386 INFO L225 Difference]: With dead ends: 168 [2020-10-12 09:38:03,386 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 09:38:03,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-12 09:38:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 09:38:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-12 09:38:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 09:38:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-12 09:38:03,398 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-12 09:38:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:03,398 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-12 09:38:03,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 09:38:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-12 09:38:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 09:38:03,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:03,400 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:03,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 09:38:03,400 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:03,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-12 09:38:03,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:03,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748946104] [2020-10-12 09:38:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 09:38:08,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:08,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:38:08,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:08,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-12 09:38:08,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:08,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:08,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:08,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:08,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:08,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:08,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:08,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:08,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 09:38:08,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:09,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 09:38:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:09,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:09,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:09,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 09:38:09,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:09,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:09,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 09:38:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:09,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:09,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 09:38:09,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-12 09:38:09,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748946104] [2020-10-12 09:38:09,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:09,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 09:38:09,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292496967] [2020-10-12 09:38:09,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 09:38:09,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 09:38:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:38:09,641 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-12 09:38:10,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:10,791 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-12 09:38:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 09:38:10,792 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-12 09:38:10,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:10,793 INFO L225 Difference]: With dead ends: 172 [2020-10-12 09:38:10,793 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 09:38:10,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 09:38:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 09:38:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-12 09:38:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 09:38:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-12 09:38:10,799 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-12 09:38:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:10,800 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-12 09:38:10,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 09:38:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-12 09:38:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 09:38:10,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:10,801 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:10,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 09:38:10,802 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:10,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:10,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-12 09:38:10,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:10,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191838989] [2020-10-12 09:38:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:10,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 09:38:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:38:15,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:15,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:15,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:15,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:15,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:16,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:38:16,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 09:38:16,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 09:38:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:16,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:38:16,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:16,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 09:38:16,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 09:38:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:17,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:38:17,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 09:38:17,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-12 09:38:17,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191838989] [2020-10-12 09:38:17,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:17,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 09:38:17,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431094070] [2020-10-12 09:38:17,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 09:38:17,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:17,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 09:38:17,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:38:17,187 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-12 09:38:18,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:18,410 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-12 09:38:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 09:38:18,411 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-12 09:38:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:18,412 INFO L225 Difference]: With dead ends: 176 [2020-10-12 09:38:18,412 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 09:38:18,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 09:38:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 09:38:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-12 09:38:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 09:38:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-12 09:38:18,418 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-12 09:38:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:18,418 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-12 09:38:18,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 09:38:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-12 09:38:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 09:38:18,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:18,420 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:18,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 09:38:18,420 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:18,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:18,421 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-12 09:38:18,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:18,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889354673] [2020-10-12 09:38:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:18,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:23,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 09:38:23,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 09:38:23,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:23,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:23,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:23,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:23,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:23,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:38:23,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:23,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 09:38:23,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:23,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 09:38:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:24,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:38:24,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 09:38:24,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 09:38:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:24,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:38:24,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:24,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 09:38:24,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 09:38:24,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889354673] [2020-10-12 09:38:24,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:24,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 09:38:24,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018594668] [2020-10-12 09:38:24,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 09:38:24,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:24,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 09:38:24,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 09:38:24,803 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-12 09:38:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:26,141 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-12 09:38:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 09:38:26,142 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-12 09:38:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:26,143 INFO L225 Difference]: With dead ends: 180 [2020-10-12 09:38:26,143 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 09:38:26,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-12 09:38:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 09:38:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-12 09:38:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 09:38:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-12 09:38:26,150 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-12 09:38:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:26,150 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-12 09:38:26,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 09:38:26,150 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-12 09:38:26,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 09:38:26,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:26,152 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:26,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 09:38:26,152 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:26,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2034736581, now seen corresponding path program 35 times [2020-10-12 09:38:26,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:26,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107132129] [2020-10-12 09:38:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:26,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:31,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:31,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 09:38:31,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:31,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:38:31,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 09:38:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:31,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:31,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:31,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:31,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:31,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:31,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:38:31,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-12 09:38:31,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:32,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 09:38:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:32,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:38:32,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 09:38:32,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:32,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-12 09:38:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:32,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:38:32,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 09:38:32,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-12 09:38:32,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107132129] [2020-10-12 09:38:32,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:32,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 09:38:32,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815819834] [2020-10-12 09:38:32,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 09:38:32,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:32,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 09:38:32,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:38:32,605 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states. [2020-10-12 09:38:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:33,915 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2020-10-12 09:38:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 09:38:33,916 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 242 [2020-10-12 09:38:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:33,917 INFO L225 Difference]: With dead ends: 184 [2020-10-12 09:38:33,917 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 09:38:33,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2020-10-12 09:38:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 09:38:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-12 09:38:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 09:38:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-12 09:38:33,923 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 242 [2020-10-12 09:38:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:33,923 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-12 09:38:33,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 09:38:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-12 09:38:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 09:38:33,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:33,925 INFO L422 BasicCegarLoop]: trace histogram [108, 108, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:33,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 09:38:33,925 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:33,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:33,925 INFO L82 PathProgramCache]: Analyzing trace with hash 862084547, now seen corresponding path program 36 times [2020-10-12 09:38:33,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:33,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941078128] [2020-10-12 09:38:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:33,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:38,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:38,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 09:38:38,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:38,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:38:38,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:38,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:38,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 09:38:38,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:38,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:38,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:38,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:38,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:38,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:38,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:38,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:39,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:39,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:38:39,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 09:38:39,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 09:38:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:40,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:38:40,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 09:38:40,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 09:38:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:40,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:38:40,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:40,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 09:38:40,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 3888 proven. 7776 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 09:38:40,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941078128] [2020-10-12 09:38:40,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:40,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-12 09:38:40,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029745530] [2020-10-12 09:38:40,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-12 09:38:40,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-12 09:38:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 09:38:40,467 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 40 states. [2020-10-12 09:38:41,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:41,938 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-10-12 09:38:41,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 09:38:41,939 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 248 [2020-10-12 09:38:41,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:41,940 INFO L225 Difference]: With dead ends: 188 [2020-10-12 09:38:41,940 INFO L226 Difference]: Without dead ends: 100 [2020-10-12 09:38:41,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2020-10-12 09:38:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-12 09:38:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-12 09:38:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 09:38:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-12 09:38:41,946 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 248 [2020-10-12 09:38:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:41,946 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-12 09:38:41,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-12 09:38:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-12 09:38:41,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 09:38:41,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:41,948 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:41,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 09:38:41,948 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:41,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:41,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1512400705, now seen corresponding path program 37 times [2020-10-12 09:38:41,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:41,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803593294] [2020-10-12 09:38:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:46,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 09:38:46,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:38:46,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:46,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:46,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:46,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:46,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:46,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:46,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:46,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:46,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:46,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:46,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:46,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:46,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:47,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:47,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:38:47,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:47,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 09:38:47,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:47,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:48,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 09:38:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:48,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:48,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:48,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:38:48,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 09:38:48,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:48,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:48,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-12 09:38:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:48,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:48,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:48,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:38:48,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 09:38:48,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 4107 proven. 8214 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-12 09:38:48,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803593294] [2020-10-12 09:38:48,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:48,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-12 09:38:48,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753660729] [2020-10-12 09:38:48,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-12 09:38:48,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:48,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-12 09:38:48,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:38:48,554 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 41 states. [2020-10-12 09:38:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:50,013 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2020-10-12 09:38:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 09:38:50,013 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 254 [2020-10-12 09:38:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:50,015 INFO L225 Difference]: With dead ends: 192 [2020-10-12 09:38:50,015 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 09:38:50,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2020-10-12 09:38:50,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 09:38:50,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-12 09:38:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 09:38:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-12 09:38:50,022 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 254 [2020-10-12 09:38:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:50,022 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-12 09:38:50,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-12 09:38:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-12 09:38:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 09:38:50,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:50,024 INFO L422 BasicCegarLoop]: trace histogram [114, 114, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:50,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 09:38:50,025 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:50,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:50,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1796938303, now seen corresponding path program 38 times [2020-10-12 09:38:50,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:50,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012671325] [2020-10-12 09:38:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:50,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:50,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:55,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 09:38:55,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:38:55,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-12 09:38:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 09:38:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:55,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:55,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:55,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:55,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:55,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:55,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:38:55,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:55,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-12 09:38:55,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-12 09:38:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 09:38:55,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:56,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 09:38:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:56,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:38:56,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 09:38:56,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-12 09:38:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 09:38:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-12 09:38:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:56,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:38:56,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-12 09:38:56,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-12 09:38:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 09:38:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13239 backedges. 4332 proven. 8664 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-12 09:38:56,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012671325] [2020-10-12 09:38:56,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:56,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-12 09:38:56,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622464218] [2020-10-12 09:38:56,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-12 09:38:56,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:56,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-12 09:38:56,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 09:38:56,722 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 42 states. [2020-10-12 09:38:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:58,390 INFO L93 Difference]: Finished difference Result 196 states and 206 transitions. [2020-10-12 09:38:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 09:38:58,390 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 260 [2020-10-12 09:38:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:58,392 INFO L225 Difference]: With dead ends: 196 [2020-10-12 09:38:58,392 INFO L226 Difference]: Without dead ends: 104 [2020-10-12 09:38:58,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2020-10-12 09:38:58,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-12 09:38:58,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-12 09:38:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 09:38:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-12 09:38:58,399 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 260 [2020-10-12 09:38:58,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:58,399 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-12 09:38:58,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-12 09:38:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-12 09:38:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 09:38:58,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:58,401 INFO L422 BasicCegarLoop]: trace histogram [117, 117, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:58,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 09:38:58,401 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:58,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:58,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2128991933, now seen corresponding path program 39 times [2020-10-12 09:38:58,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:58,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049457712] [2020-10-12 09:38:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:58,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:58,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking...