/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sum.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:42:28,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:42:28,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:42:28,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:42:28,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:42:28,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:42:28,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:42:28,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:42:28,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:42:28,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:42:28,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:42:28,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:42:28,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:42:28,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:42:28,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:42:28,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:42:28,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:42:28,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:42:28,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:42:28,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:42:28,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:42:28,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:42:28,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:42:28,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:42:28,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:42:28,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:42:28,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:42:29,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:42:29,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:42:29,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:42:29,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:42:29,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:42:29,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:42:29,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:42:29,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:42:29,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:42:29,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:42:29,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:42:29,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:42:29,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:42:29,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:42:29,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 07:42:29,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:42:29,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:42:29,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:42:29,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:42:29,045 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:42:29,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:42:29,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:42:29,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:42:29,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:42:29,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:42:29,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:42:29,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:42:29,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:42:29,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:42:29,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:42:29,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:42:29,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:42:29,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:42:29,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:42:29,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:42:29,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:42:29,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:42:29,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:42:29,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:42:29,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:42:29,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:42:29,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:42:29,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:42:29,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:42:29,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 07:42:29,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:42:29,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:42:29,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:42:29,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:42:29,381 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:42:29,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum.i [2020-10-14 07:42:29,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1f6625b2/89a1568f25ee4be29aa4a31b759d8978/FLAG0005c90d0 [2020-10-14 07:42:29,858 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:42:29,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum.i [2020-10-14 07:42:29,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1f6625b2/89a1568f25ee4be29aa4a31b759d8978/FLAG0005c90d0 [2020-10-14 07:42:30,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1f6625b2/89a1568f25ee4be29aa4a31b759d8978 [2020-10-14 07:42:30,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:42:30,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:42:30,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:42:30,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:42:30,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:42:30,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:42:30" (1/1) ... [2020-10-14 07:42:30,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f77297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30, skipping insertion in model container [2020-10-14 07:42:30,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:42:30" (1/1) ... [2020-10-14 07:42:30,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:42:30,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:42:30,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:42:30,510 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:42:30,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:42:30,548 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:42:30,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30 WrapperNode [2020-10-14 07:42:30,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:42:30,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:42:30,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:42:30,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:42:30,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30" (1/1) ... [2020-10-14 07:42:30,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30" (1/1) ... [2020-10-14 07:42:30,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30" (1/1) ... [2020-10-14 07:42:30,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30" (1/1) ... [2020-10-14 07:42:30,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30" (1/1) ... [2020-10-14 07:42:30,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30" (1/1) ... [2020-10-14 07:42:30,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30" (1/1) ... [2020-10-14 07:42:30,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:42:30,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:42:30,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:42:30,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:42:30,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:42:30,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:42:30,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:42:30,723 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-14 07:42:30,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:42:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:42:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:42:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-14 07:42:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:42:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:42:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:42:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:42:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:42:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:42:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:42:30,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:42:30,966 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 07:42:30,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:42:30 BoogieIcfgContainer [2020-10-14 07:42:30,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:42:30,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:42:30,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:42:30,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:42:30,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:42:30" (1/3) ... [2020-10-14 07:42:30,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5553728b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:42:30, skipping insertion in model container [2020-10-14 07:42:30,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:30" (2/3) ... [2020-10-14 07:42:30,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5553728b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:42:30, skipping insertion in model container [2020-10-14 07:42:30,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:42:30" (3/3) ... [2020-10-14 07:42:30,978 INFO L109 eAbstractionObserver]: Analyzing ICFG sum.i [2020-10-14 07:42:30,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:42:30,996 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:42:31,011 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:42:31,049 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:42:31,049 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:42:31,049 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:42:31,049 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:42:31,050 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:42:31,050 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:42:31,050 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:42:31,050 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:42:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-14 07:42:31,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:42:31,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:31,089 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] [2020-10-14 07:42:31,090 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:31,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:31,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1754504496, now seen corresponding path program 1 times [2020-10-14 07:42:31,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:31,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137138221] [2020-10-14 07:42:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:31,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:31,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:31,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:32,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:42:32,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:42:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1161 [2020-10-14 07:42:32,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:32,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:42:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:42:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:32,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:32,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:32,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:32,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:42:32,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:32,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:32,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:32,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:42:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:32,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:32,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:42:32,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:32,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:42:32,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:32,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:32,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:32,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:42:32,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:32,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:42:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:32,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:42:32,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:32,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:42:32,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:32,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:42:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:32,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:42:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:32,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:32,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:42:32,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:32,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:42:32,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:32,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:42:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:42:32,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137138221] [2020-10-14 07:42:32,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:42:32,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 07:42:32,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055977083] [2020-10-14 07:42:32,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:42:32,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:32,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:42:32,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:42:32,526 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-14 07:42:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:32,618 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2020-10-14 07:42:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:42:32,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 07:42:32,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:32,629 INFO L225 Difference]: With dead ends: 54 [2020-10-14 07:42:32,630 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 07:42:32,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:42:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 07:42:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-14 07:42:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 07:42:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-14 07:42:32,676 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 32 [2020-10-14 07:42:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:32,677 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-14 07:42:32,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:42:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-14 07:42:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:42:32,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:32,680 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] [2020-10-14 07:42:32,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:42:32,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:32,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:32,681 INFO L82 PathProgramCache]: Analyzing trace with hash 614035178, now seen corresponding path program 1 times [2020-10-14 07:42:32,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:32,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623194873] [2020-10-14 07:42:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:32,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:42:33,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:42:33,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1198 [2020-10-14 07:42:33,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:42:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 07:42:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:42:33,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:33,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:42:33,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:42:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:42:33,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:42:33,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:42:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:42:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:33,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:42:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:42:33,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:42:33,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:42:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:42:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:33,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:42:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:42:33,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:33,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:42:33,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:42:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:42:33,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:42:34,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623194873] [2020-10-14 07:42:34,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:42:34,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 07:42:34,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149879080] [2020-10-14 07:42:34,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:42:34,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:34,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:42:34,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:34,017 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-10-14 07:42:34,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:34,180 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-10-14 07:42:34,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:42:34,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-14 07:42:34,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:34,182 INFO L225 Difference]: With dead ends: 44 [2020-10-14 07:42:34,182 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 07:42:34,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 07:42:34,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-14 07:42:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 07:42:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-14 07:42:34,191 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 32 [2020-10-14 07:42:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:34,192 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-14 07:42:34,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:42:34,192 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-14 07:42:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 07:42:34,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:34,194 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] [2020-10-14 07:42:34,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:42:34,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:34,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash 435243016, now seen corresponding path program 1 times [2020-10-14 07:42:34,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:34,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088638029] [2020-10-14 07:42:34,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:36,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:36,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:42:36,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2521 [2020-10-14 07:42:36,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:36,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:42:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 07:42:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:42:36,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:36,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:36,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:36,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:42:36,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:36,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:36,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:42:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:36,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:36,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:36,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:42:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:42:36,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:36,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:42:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 07:42:36,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:36,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:42:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:36,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:36,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:42:36,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 07:42:36,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:36,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:42:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 07:42:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:42:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:36,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:36,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:36,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:42:36,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:42:36,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:36,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:42:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:42:36,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 07:42:36,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088638029] [2020-10-14 07:42:36,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:36,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:42:36,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512693773] [2020-10-14 07:42:36,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:42:36,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:36,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:42:36,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:36,904 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2020-10-14 07:42:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:37,068 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-10-14 07:42:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:42:37,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-14 07:42:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:37,069 INFO L225 Difference]: With dead ends: 47 [2020-10-14 07:42:37,069 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 07:42:37,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:42:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 07:42:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 07:42:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:42:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-14 07:42:37,077 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 38 [2020-10-14 07:42:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:37,078 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-14 07:42:37,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:42:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-14 07:42:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 07:42:37,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:37,079 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] [2020-10-14 07:42:37,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:42:37,080 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:37,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1564241242, now seen corresponding path program 2 times [2020-10-14 07:42:37,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:37,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52646673] [2020-10-14 07:42:37,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:37,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:38,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 07:42:38,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1106 [2020-10-14 07:42:38,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:38,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:42:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 07:42:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:42:38,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:38,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:38,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:42:38,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:38,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:42:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:38,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:42:38,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:38,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:42:38,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:38,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:42:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:42:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:42:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:38,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:38,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:42:38,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:38,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:42:38,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:38,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:42:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:42:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:38,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:42:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:38,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:42:38,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:38,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:42:38,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:38,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:38,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:38,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 07:42:38,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52646673] [2020-10-14 07:42:38,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:42:38,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 07:42:38,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983473877] [2020-10-14 07:42:38,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:42:38,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:38,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:42:38,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:42:38,394 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-10-14 07:42:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:38,505 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-14 07:42:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:42:38,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-14 07:42:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:38,507 INFO L225 Difference]: With dead ends: 45 [2020-10-14 07:42:38,507 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:42:38,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:38,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:42:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 07:42:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 07:42:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 07:42:38,515 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 44 [2020-10-14 07:42:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:38,518 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 07:42:38,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:42:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 07:42:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 07:42:38,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:38,520 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, 1, 1] [2020-10-14 07:42:38,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:42:38,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash -2051797468, now seen corresponding path program 1 times [2020-10-14 07:42:38,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:38,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895490620] [2020-10-14 07:42:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:42,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:43,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:43,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 07:42:43,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:42:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-10-14 07:42:43,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:43,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 07:42:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 07:42:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 07:42:43,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:44,427 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-14 07:42:44,618 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2020-10-14 07:42:44,809 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 59 [2020-10-14 07:42:44,974 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-10-14 07:42:45,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:45,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:42:45,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:45,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:45,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:42:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:42:45,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:45,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 07:42:45,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:42:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:42:45,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:45,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:42:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:46,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:46,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:42:46,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 07:42:46,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:46,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:42:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:42:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:46,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:42:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:46,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:46,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:46,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:42:46,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:46,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 07:42:46,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:46,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:42:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:42:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 07:42:47,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895490620] [2020-10-14 07:42:47,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:47,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 07:42:47,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320994958] [2020-10-14 07:42:47,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 07:42:47,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:47,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 07:42:47,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:42:47,007 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 23 states. [2020-10-14 07:42:48,121 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-14 07:42:51,910 WARN L193 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 113 DAG size of output: 89 [2020-10-14 07:43:01,523 WARN L193 SmtUtils]: Spent 8.54 s on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-10-14 07:43:06,114 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-14 07:43:10,747 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2020-10-14 07:43:11,012 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2020-10-14 07:43:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:13,172 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2020-10-14 07:43:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 07:43:13,173 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2020-10-14 07:43:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:13,178 INFO L225 Difference]: With dead ends: 52 [2020-10-14 07:43:13,178 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 07:43:13,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 07:43:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 07:43:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-10-14 07:43:13,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 07:43:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-10-14 07:43:13,193 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 46 [2020-10-14 07:43:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:13,193 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-14 07:43:13,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 07:43:13,193 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-10-14 07:43:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 07:43:13,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:13,195 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:13,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:43:13,195 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:13,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1089405570, now seen corresponding path program 2 times [2020-10-14 07:43:13,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:13,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283015421] [2020-10-14 07:43:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:13,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 07:43:17,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:43:17,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4240 [2020-10-14 07:43:17,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:43:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:43:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 07:43:17,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:17,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:17,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:17,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:43:17,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:43:17,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:43:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:17,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:43:17,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:17,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:43:17,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:43:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:43:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:17,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:43:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:17,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:43:17,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:17,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:43:17,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:43:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:43:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:17,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:43:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:17,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:43:17,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:17,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 07:43:17,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:43:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:43:17,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 07:43:17,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283015421] [2020-10-14 07:43:17,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:17,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:43:17,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065998960] [2020-10-14 07:43:17,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:43:17,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:17,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:43:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:17,686 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 11 states. [2020-10-14 07:43:18,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:18,193 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2020-10-14 07:43:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:43:18,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-14 07:43:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:18,195 INFO L225 Difference]: With dead ends: 87 [2020-10-14 07:43:18,196 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 07:43:18,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:43:18,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 07:43:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2020-10-14 07:43:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 07:43:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-10-14 07:43:18,220 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 48 [2020-10-14 07:43:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:18,221 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-10-14 07:43:18,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:43:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-10-14 07:43:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 07:43:18,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:18,222 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:18,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:43:18,223 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:18,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:18,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1853071906, now seen corresponding path program 3 times [2020-10-14 07:43:18,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:18,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476252715] [2020-10-14 07:43:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:21,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:22,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 07:43:23,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:43:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5355 [2020-10-14 07:43:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:43:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:43:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:43:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:23,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:23,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:43:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:43:23,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:43:23,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:43:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:43:23,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:43:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:43:23,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:23,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:43:23,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:43:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:43:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:43:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:43:23,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:43:23,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:23,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 07:43:23,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476252715] [2020-10-14 07:43:23,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:23,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:43:23,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754561624] [2020-10-14 07:43:23,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:43:23,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:23,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:43:23,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:43:23,722 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 9 states. [2020-10-14 07:43:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:24,045 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-10-14 07:43:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:43:24,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-14 07:43:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:24,047 INFO L225 Difference]: With dead ends: 70 [2020-10-14 07:43:24,047 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 07:43:24,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:43:24,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 07:43:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-10-14 07:43:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 07:43:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-14 07:43:24,057 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 48 [2020-10-14 07:43:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:24,057 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-14 07:43:24,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:43:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-14 07:43:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 07:43:24,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:24,059 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, 1, 1] [2020-10-14 07:43:24,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:43:24,059 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash -380292414, now seen corresponding path program 4 times [2020-10-14 07:43:24,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:24,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848939385] [2020-10-14 07:43:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:29,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 07:43:29,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:43:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:43:29,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:29,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:43:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:43:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:43:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:29,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:43:29,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:29,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:29,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:43:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:43:29,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:43:29,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:29,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:43:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:43:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:43:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:29,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:43:29,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:43:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:29,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:43:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 07:43:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:43:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:29,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:43:29,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:43:29,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:29,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:43:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:29,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 07:43:29,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848939385] [2020-10-14 07:43:29,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:29,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:43:29,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880000081] [2020-10-14 07:43:29,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:43:29,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:29,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:43:29,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:43:29,206 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-10-14 07:43:29,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:29,452 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-10-14 07:43:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:43:29,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-14 07:43:29,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:29,455 INFO L225 Difference]: With dead ends: 56 [2020-10-14 07:43:29,455 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 07:43:29,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:43:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 07:43:29,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-14 07:43:29,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 07:43:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-14 07:43:29,461 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 52 [2020-10-14 07:43:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:29,462 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-14 07:43:29,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:43:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-14 07:43:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 07:43:29,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:29,463 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:29,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:43:29,463 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash 531935040, now seen corresponding path program 5 times [2020-10-14 07:43:29,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:29,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245092048] [2020-10-14 07:43:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:31,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:32,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:34,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:34,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:43:34,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:43:34,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:43:34,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:34,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:34,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 07:43:34,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 07:43:34,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 07:43:34,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:34,906 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-10-14 07:43:35,168 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2020-10-14 07:43:35,382 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-14 07:43:35,662 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-10-14 07:43:35,974 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2020-10-14 07:43:36,421 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2020-10-14 07:43:36,675 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-14 07:43:36,901 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-14 07:43:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:37,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:37,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:37,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:37,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:37,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:43:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:37,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:37,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:43:37,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 07:43:37,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:37,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:43:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:37,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:43:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:37,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:38,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:38,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:43:38,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-14 07:43:38,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:38,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:43:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:43:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:39,124 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-14 07:43:39,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:43:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:39,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:43:39,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 07:43:39,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:39,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:43:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:40,146 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 31 [2020-10-14 07:43:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 07:43:40,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245092048] [2020-10-14 07:43:40,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:40,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 07:43:40,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386239518] [2020-10-14 07:43:40,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 07:43:40,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:40,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 07:43:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2020-10-14 07:43:40,186 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 31 states. [2020-10-14 07:43:41,720 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2020-10-14 07:43:42,667 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2020-10-14 07:43:43,860 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 91 [2020-10-14 07:43:48,932 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2020-10-14 07:43:51,860 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2020-10-14 07:43:53,135 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-10-14 07:43:56,374 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2020-10-14 07:44:03,588 WARN L193 SmtUtils]: Spent 4.74 s on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2020-10-14 07:44:03,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:03,797 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-14 07:44:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 07:44:03,800 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 54 [2020-10-14 07:44:03,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:03,801 INFO L225 Difference]: With dead ends: 58 [2020-10-14 07:44:03,802 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 07:44:03,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=166, Invalid=1995, Unknown=1, NotChecked=0, Total=2162 [2020-10-14 07:44:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 07:44:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-14 07:44:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 07:44:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-10-14 07:44:03,824 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 54 [2020-10-14 07:44:03,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:03,824 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-10-14 07:44:03,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 07:44:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-10-14 07:44:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 07:44:03,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:03,828 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:03,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:44:03,828 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:03,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:03,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1565248670, now seen corresponding path program 6 times [2020-10-14 07:44:03,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:03,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266541723] [2020-10-14 07:44:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:03,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:03,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:08,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:08,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 07:44:08,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:44:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:44:08,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:08,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:44:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:44:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 07:44:08,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:08,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:08,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:08,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:08,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:08,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:08,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:44:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:08,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:08,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:44:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:44:08,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:08,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:44:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 07:44:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:08,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:44:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:08,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:08,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:08,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:44:08,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:44:08,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:08,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:44:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 07:44:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:44:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:08,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:08,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:44:08,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:44:08,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:08,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:44:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:44:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 07:44:09,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266541723] [2020-10-14 07:44:09,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:09,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:44:09,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977429654] [2020-10-14 07:44:09,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:44:09,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:09,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:44:09,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:44:09,047 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 13 states. [2020-10-14 07:44:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:09,671 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2020-10-14 07:44:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 07:44:09,672 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-14 07:44:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:09,674 INFO L225 Difference]: With dead ends: 101 [2020-10-14 07:44:09,674 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 07:44:09,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-10-14 07:44:09,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 07:44:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-10-14 07:44:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 07:44:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-14 07:44:09,699 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 56 [2020-10-14 07:44:09,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:09,701 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-14 07:44:09,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:44:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-14 07:44:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 07:44:09,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:09,707 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-14 07:44:09,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:44:09,707 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:09,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1009189950, now seen corresponding path program 7 times [2020-10-14 07:44:09,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:09,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228919272] [2020-10-14 07:44:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:14,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 07:44:14,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:44:14,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 07:44:14,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:14,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:44:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:44:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:44:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:44:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:14,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:14,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:14,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:14,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:14,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:44:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:44:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:14,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:44:14,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:44:14,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:14,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:44:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 07:44:14,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:14,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:44:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:14,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:44:14,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 07:44:14,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:14,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:44:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 07:44:14,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:44:14,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 07:44:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:14,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:14,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:44:14,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:44:14,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:14,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:44:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:44:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 9 proven. 65 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 07:44:14,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228919272] [2020-10-14 07:44:14,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:14,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:44:14,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99692465] [2020-10-14 07:44:14,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:44:14,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:14,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:44:14,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:44:14,998 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 11 states. [2020-10-14 07:44:15,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:15,562 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-10-14 07:44:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:44:15,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-14 07:44:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:15,563 INFO L225 Difference]: With dead ends: 82 [2020-10-14 07:44:15,563 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 07:44:15,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:44:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 07:44:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-10-14 07:44:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 07:44:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-14 07:44:15,577 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 56 [2020-10-14 07:44:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:15,579 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-14 07:44:15,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:44:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-14 07:44:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 07:44:15,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:15,581 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:15,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:44:15,581 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:15,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1152396766, now seen corresponding path program 8 times [2020-10-14 07:44:15,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:15,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964684706] [2020-10-14 07:44:15,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:21,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:21,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 07:44:21,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:44:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5518 [2020-10-14 07:44:21,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:21,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:44:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:44:21,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 07:44:21,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:21,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:21,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:21,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:21,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:21,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:21,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:21,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:44:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:21,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:21,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:44:21,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:21,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 07:44:21,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:21,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:44:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 07:44:21,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:44:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:21,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:21,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:44:21,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 07:44:21,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:21,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:44:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 07:44:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:44:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:21,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:21,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:44:21,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:21,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:44:21,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:21,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:44:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 9 proven. 99 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 07:44:21,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964684706] [2020-10-14 07:44:21,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:21,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:44:21,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079720431] [2020-10-14 07:44:21,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:44:21,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:21,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:44:21,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:44:21,289 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 11 states. [2020-10-14 07:44:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:21,672 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-10-14 07:44:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:44:21,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-14 07:44:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:21,674 INFO L225 Difference]: With dead ends: 64 [2020-10-14 07:44:21,674 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 07:44:21,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:44:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 07:44:21,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-10-14 07:44:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 07:44:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-14 07:44:21,680 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 60 [2020-10-14 07:44:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:21,680 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-14 07:44:21,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:44:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-14 07:44:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 07:44:21,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:21,682 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2020-10-14 07:44:21,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:44:21,682 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:21,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:21,682 INFO L82 PathProgramCache]: Analyzing trace with hash -967972004, now seen corresponding path program 9 times [2020-10-14 07:44:21,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:21,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223798671] [2020-10-14 07:44:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:21,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:25,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:26,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:26,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 07:44:26,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:44:26,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:44:26,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:26,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 07:44:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 07:44:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 07:44:26,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:27,253 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-10-14 07:44:27,432 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-14 07:44:27,614 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-14 07:44:27,868 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2020-10-14 07:44:28,131 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-10-14 07:44:28,398 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2020-10-14 07:44:28,670 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2020-10-14 07:44:28,940 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2020-10-14 07:44:29,147 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-10-14 07:44:29,352 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-14 07:44:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:29,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:29,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:29,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:29,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:44:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:29,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:29,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:29,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:44:29,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:29,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 07:44:29,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:29,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:44:29,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:44:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:31,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:31,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:31,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:44:31,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:31,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-14 07:44:31,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:31,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:44:31,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:32,689 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-14 07:44:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:44:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:32,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:32,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:44:32,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 07:44:32,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:32,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:44:32,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 8 proven. 168 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 07:44:33,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223798671] [2020-10-14 07:44:33,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:33,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 07:44:33,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813338892] [2020-10-14 07:44:33,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 07:44:33,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:33,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 07:44:33,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1102, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 07:44:33,667 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 35 states. [2020-10-14 07:44:36,029 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2020-10-14 07:44:36,698 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2020-10-14 07:44:39,319 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2020-10-14 07:44:39,956 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-14 07:44:40,571 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-10-14 07:44:41,112 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-10-14 07:44:43,016 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 185 DAG size of output: 155 [2020-10-14 07:44:49,079 WARN L193 SmtUtils]: Spent 5.25 s on a formula simplification. DAG size of input: 188 DAG size of output: 156 [2020-10-14 07:44:52,871 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 189 DAG size of output: 157 [2020-10-14 07:44:53,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:53,119 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-10-14 07:44:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 07:44:53,121 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 62 [2020-10-14 07:44:53,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:53,123 INFO L225 Difference]: With dead ends: 64 [2020-10-14 07:44:53,123 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 07:44:53,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 9 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 07:44:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 07:44:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-14 07:44:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 07:44:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-14 07:44:53,136 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 62 [2020-10-14 07:44:53,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:53,136 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-14 07:44:53,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 07:44:53,137 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-14 07:44:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 07:44:53,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:53,138 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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] [2020-10-14 07:44:53,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:44:53,139 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:53,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1031376454, now seen corresponding path program 10 times [2020-10-14 07:44:53,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:53,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592213249] [2020-10-14 07:44:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:58,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 07:44:58,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:44:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:44:58,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:58,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:44:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:44:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 07:44:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:58,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:58,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:58,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:58,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:58,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:58,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:58,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:44:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:58,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:44:58,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:58,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:44:58,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:58,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:44:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:44:58,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:58,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:44:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:58,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:58,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:44:58,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:58,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:44:58,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:58,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:44:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 07:44:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:44:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:44:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:58,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:58,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:44:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:44:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:58,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:44:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:44:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:44:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 69 proven. 122 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 07:44:58,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592213249] [2020-10-14 07:44:58,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:58,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:44:58,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88871759] [2020-10-14 07:44:58,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:44:58,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:58,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:44:58,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:58,517 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 15 states. [2020-10-14 07:44:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:59,704 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2020-10-14 07:44:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 07:44:59,705 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-14 07:44:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:59,706 INFO L225 Difference]: With dead ends: 107 [2020-10-14 07:44:59,706 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 07:44:59,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 07:44:59,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 07:44:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-14 07:44:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 07:44:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-14 07:44:59,722 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 64 [2020-10-14 07:44:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:59,722 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-14 07:44:59,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:44:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-14 07:44:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 07:44:59,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:59,725 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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] [2020-10-14 07:44:59,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:44:59,726 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1362148358, now seen corresponding path program 11 times [2020-10-14 07:44:59,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:59,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872410293] [2020-10-14 07:44:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:59,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:04,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:04,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 07:45:04,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:45:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:45:04,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:04,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:45:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:45:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 07:45:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:04,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:04,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:04,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:04,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:04,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:04,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:45:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:04,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:04,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:45:04,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:45:04,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:04,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:45:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:45:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 07:45:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:04,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:04,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:45:04,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:45:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:04,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:45:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 07:45:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:04,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:45:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:04,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:04,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:45:04,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:45:04,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:04,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:45:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:04,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 07:45:04,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872410293] [2020-10-14 07:45:04,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:04,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:45:04,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016402668] [2020-10-14 07:45:04,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:45:04,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:04,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:45:04,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:45:04,946 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 13 states. [2020-10-14 07:45:05,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:05,532 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2020-10-14 07:45:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 07:45:05,533 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-14 07:45:05,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:05,534 INFO L225 Difference]: With dead ends: 72 [2020-10-14 07:45:05,534 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 07:45:05,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-10-14 07:45:05,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 07:45:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2020-10-14 07:45:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 07:45:05,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-14 07:45:05,541 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 68 [2020-10-14 07:45:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:05,542 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-14 07:45:05,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:45:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-14 07:45:05,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 07:45:05,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:05,543 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:05,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:45:05,543 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:05,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:05,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1723170184, now seen corresponding path program 12 times [2020-10-14 07:45:05,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:05,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411412838] [2020-10-14 07:45:05,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:05,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:09,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:10,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 07:45:10,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:45:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:45:10,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:10,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-14 07:45:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 07:45:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 07:45:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:11,503 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-10-14 07:45:11,778 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2020-10-14 07:45:12,192 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-14 07:45:12,523 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2020-10-14 07:45:12,874 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2020-10-14 07:45:15,317 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2020-10-14 07:45:15,743 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2020-10-14 07:45:16,151 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2020-10-14 07:45:16,548 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2020-10-14 07:45:16,982 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2020-10-14 07:45:17,305 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-14 07:45:19,763 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-14 07:45:19,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:19,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:19,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:19,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:19,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:19,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:19,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:19,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:19,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:19,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:19,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:45:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:20,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:20,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:20,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:45:20,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:45:20,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 07:45:20,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:20,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:45:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:45:20,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:21,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 07:45:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:22,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:22,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:45:22,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:22,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-14 07:45:22,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:22,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:45:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:45:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:24,393 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-14 07:45:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 07:45:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:24,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:24,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:45:24,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:24,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 07:45:24,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:24,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:24,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:45:24,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:24,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:45:24,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 20 proven. 253 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 07:45:26,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411412838] [2020-10-14 07:45:26,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:26,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 07:45:26,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080586570] [2020-10-14 07:45:26,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 07:45:26,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:26,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 07:45:26,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1956, Unknown=1, NotChecked=0, Total=2070 [2020-10-14 07:45:26,292 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 46 states. [2020-10-14 07:45:35,466 WARN L193 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 219 DAG size of output: 167 [2020-10-14 07:45:38,223 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-14 07:45:38,629 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-14 07:45:39,048 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-14 07:45:39,500 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-14 07:45:43,057 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-14 07:45:46,802 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2020-10-14 07:45:51,559 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2020-10-14 07:45:58,542 WARN L193 SmtUtils]: Spent 6.56 s on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2020-10-14 07:46:15,727 WARN L193 SmtUtils]: Spent 14.80 s on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2020-10-14 07:46:16,475 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 99 [2020-10-14 07:46:21,684 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2020-10-14 07:46:26,862 WARN L193 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 101 DAG size of output: 84