/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_reverse_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:03:45,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:03:45,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:03:45,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:03:45,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:03:45,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:03:45,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:03:45,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:03:45,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:03:45,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:03:45,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:03:45,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:03:45,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:03:45,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:03:45,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:03:45,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:03:45,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:03:45,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:03:45,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:03:45,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:03:45,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:03:45,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:03:45,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:03:45,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:03:45,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:03:45,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:03:45,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:03:45,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:03:45,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:03:45,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:03:45,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:03:45,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:03:45,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:03:45,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:03:45,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:03:45,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:03:45,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:03:45,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:03:45,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:03:45,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:03:45,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:03:45,843 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 18:03:45,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:03:45,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:03:45,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:03:45,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:03:45,870 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:03:45,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:03:45,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:03:45,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:03:45,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:03:45,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:03:45,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:03:45,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:03:45,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:03:45,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:03:45,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:03:45,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:03:45,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:03:45,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:03:45,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:03:45,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:03:45,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:03:45,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:03:45,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:03:45,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:03:45,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:03:45,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:03:45,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:03:45,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:03:45,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:03:45,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:03:46,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:03:46,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:03:46,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:03:46,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:03:46,193 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:03:46,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_reverse_ground.i [2020-10-14 18:03:46,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4dc6a141/8238d64eed4540098ff908018ff3a0c9/FLAGe60687bc1 [2020-10-14 18:03:46,722 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:03:46,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_reverse_ground.i [2020-10-14 18:03:46,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4dc6a141/8238d64eed4540098ff908018ff3a0c9/FLAGe60687bc1 [2020-10-14 18:03:47,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4dc6a141/8238d64eed4540098ff908018ff3a0c9 [2020-10-14 18:03:47,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:03:47,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:03:47,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:03:47,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:03:47,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:03:47,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:03:47" (1/1) ... [2020-10-14 18:03:47,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bac8629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47, skipping insertion in model container [2020-10-14 18:03:47,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:03:47" (1/1) ... [2020-10-14 18:03:47,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:03:47,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:03:47,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:03:47,329 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:03:47,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:03:47,365 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:03:47,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47 WrapperNode [2020-10-14 18:03:47,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:03:47,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:03:47,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:03:47,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:03:47,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47" (1/1) ... [2020-10-14 18:03:47,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47" (1/1) ... [2020-10-14 18:03:47,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47" (1/1) ... [2020-10-14 18:03:47,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47" (1/1) ... [2020-10-14 18:03:47,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47" (1/1) ... [2020-10-14 18:03:47,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47" (1/1) ... [2020-10-14 18:03:47,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47" (1/1) ... [2020-10-14 18:03:47,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:03:47,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:03:47,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:03:47,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:03:47,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47" (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 18:03:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:03:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:03:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:03:47,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:03:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:03:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:03:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:03:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:03:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:03:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:03:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:03:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:03:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:03:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:03:47,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:03:47,847 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:03:47,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:03:47 BoogieIcfgContainer [2020-10-14 18:03:47,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:03:47,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:03:47,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:03:47,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:03:47,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:03:47" (1/3) ... [2020-10-14 18:03:47,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d202dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:03:47, skipping insertion in model container [2020-10-14 18:03:47,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:47" (2/3) ... [2020-10-14 18:03:47,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d202dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:03:47, skipping insertion in model container [2020-10-14 18:03:47,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:03:47" (3/3) ... [2020-10-14 18:03:47,864 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_reverse_ground.i [2020-10-14 18:03:47,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:03:47,880 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:03:47,894 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:03:47,918 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:03:47,919 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:03:47,919 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:03:47,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:03:47,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:03:47,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:03:47,919 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:03:47,919 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:03:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 18:03:47,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 18:03:47,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:47,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:47,942 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:47,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1778002988, now seen corresponding path program 1 times [2020-10-14 18:03:47,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:47,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290084439] [2020-10-14 18:03:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:48,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:48,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 18:03:48,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:48,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 18:03:48,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:48,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:03:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:03:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:03:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:03:48,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:48,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:48,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:03:48,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:48,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:48,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:48,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290084439] [2020-10-14 18:03:48,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:03:48,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:03:48,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424360063] [2020-10-14 18:03:48,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:03:48,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:48,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:03:48,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:03:48,395 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-14 18:03:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:48,534 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-10-14 18:03:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:03:48,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 18:03:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:48,545 INFO L225 Difference]: With dead ends: 50 [2020-10-14 18:03:48,546 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 18:03:48,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:03:48,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 18:03:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-14 18:03:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 18:03:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-14 18:03:48,592 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2020-10-14 18:03:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:48,592 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-14 18:03:48,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:03:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-14 18:03:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 18:03:48,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:48,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:48,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:03:48,595 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:48,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:48,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1323409058, now seen corresponding path program 1 times [2020-10-14 18:03:48,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:48,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57258250] [2020-10-14 18:03:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:48,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:48,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:49,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:49,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 18:03:49,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:03:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-14 18:03:49,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:49,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:03:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 18:03:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:03:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:49,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:49,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:49,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:49,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:49,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:49,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:49,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:03:49,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57258250] [2020-10-14 18:03:49,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:03:49,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 18:03:49,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064304590] [2020-10-14 18:03:49,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:03:49,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:49,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:03:49,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:03:49,684 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 10 states. [2020-10-14 18:03:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:49,986 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-14 18:03:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:03:49,987 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-14 18:03:49,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:49,988 INFO L225 Difference]: With dead ends: 34 [2020-10-14 18:03:49,989 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 18:03:49,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:03:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 18:03:49,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-14 18:03:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 18:03:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-14 18:03:50,000 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 19 [2020-10-14 18:03:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:50,000 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-14 18:03:50,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:03:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-14 18:03:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 18:03:50,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:50,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:50,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:03:50,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:50,003 INFO L82 PathProgramCache]: Analyzing trace with hash -96694823, now seen corresponding path program 1 times [2020-10-14 18:03:50,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:50,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718350378] [2020-10-14 18:03:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:50,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 18:03:50,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 18:03:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:50,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:03:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 18:03:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:50,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:50,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:50,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:50,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:50,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:03:50,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:50,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:50,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 18:03:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:50,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:50,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:03:50,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:50,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:50,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:03:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:50,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:03:50,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718350378] [2020-10-14 18:03:50,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:50,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:03:50,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971708065] [2020-10-14 18:03:50,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:03:50,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:50,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:03:50,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:03:50,249 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-10-14 18:03:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:50,341 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-14 18:03:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:03:50,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-14 18:03:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:50,345 INFO L225 Difference]: With dead ends: 57 [2020-10-14 18:03:50,346 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 18:03:50,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:03:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 18:03:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-14 18:03:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 18:03:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-14 18:03:50,355 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 27 [2020-10-14 18:03:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:50,355 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-14 18:03:50,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:03:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-14 18:03:50,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 18:03:50,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:50,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:50,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:03:50,357 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:50,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:50,357 INFO L82 PathProgramCache]: Analyzing trace with hash 60600405, now seen corresponding path program 2 times [2020-10-14 18:03:50,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:50,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805382441] [2020-10-14 18:03:50,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:50,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:50,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:51,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:51,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 18:03:51,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:03:51,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-14 18:03:51,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:51,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:51,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:03:51,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 18:03:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:03:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:51,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:51,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:51,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:51,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:51,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:51,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:51,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:51,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:03:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:51,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:51,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:03:51,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:03:51,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:51,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:03:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:03:51,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:03:51,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805382441] [2020-10-14 18:03:51,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:51,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:03:51,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839974073] [2020-10-14 18:03:51,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:03:51,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:03:51,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:03:51,724 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 13 states. [2020-10-14 18:03:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:52,510 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-10-14 18:03:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:03:52,511 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-14 18:03:52,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:52,512 INFO L225 Difference]: With dead ends: 46 [2020-10-14 18:03:52,512 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 18:03:52,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:03:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 18:03:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-14 18:03:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 18:03:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-10-14 18:03:52,522 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 31 [2020-10-14 18:03:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:52,522 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-10-14 18:03:52,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:03:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-10-14 18:03:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 18:03:52,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:52,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:52,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:03:52,525 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:52,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:52,525 INFO L82 PathProgramCache]: Analyzing trace with hash -80724852, now seen corresponding path program 3 times [2020-10-14 18:03:52,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:52,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842010173] [2020-10-14 18:03:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:52,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 18:03:52,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:52,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-14 18:03:52,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:52,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:52,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:03:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:03:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:52,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:52,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:52,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:03:52,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:52,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:52,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:52,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:52,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:52,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:03:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:52,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:03:52,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:52,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:52,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:03:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:03:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:52,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:03:52,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:52,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:52,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:03:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 18:03:52,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842010173] [2020-10-14 18:03:52,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:53,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:03:53,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164231123] [2020-10-14 18:03:53,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:03:53,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:53,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:03:53,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:03:53,015 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2020-10-14 18:03:53,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:53,095 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-10-14 18:03:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:03:53,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-14 18:03:53,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:53,097 INFO L225 Difference]: With dead ends: 79 [2020-10-14 18:03:53,097 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 18:03:53,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:03:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 18:03:53,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-14 18:03:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 18:03:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-14 18:03:53,107 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 39 [2020-10-14 18:03:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:53,107 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-14 18:03:53,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:03:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-14 18:03:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 18:03:53,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:53,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:53,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:03:53,109 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1049720072, now seen corresponding path program 4 times [2020-10-14 18:03:53,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:53,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232118747] [2020-10-14 18:03:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:53,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:54,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:54,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 18:03:54,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:03:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1680 [2020-10-14 18:03:54,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:54,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:03:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:03:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 18:03:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:55,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:55,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:55,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:55,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:55,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:55,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:55,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:55,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:03:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:55,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:03:55,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:03:55,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:55,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:03:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:03:55,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:55,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:03:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:55,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:55,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:03:55,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:55,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:03:55,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:55,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:03:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:03:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 18:03:55,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232118747] [2020-10-14 18:03:55,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:55,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:03:55,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768543534] [2020-10-14 18:03:55,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:03:55,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:55,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:03:55,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:03:55,468 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 16 states. [2020-10-14 18:03:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:56,705 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-14 18:03:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:03:56,706 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-14 18:03:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:56,707 INFO L225 Difference]: With dead ends: 58 [2020-10-14 18:03:56,707 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 18:03:56,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:03:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 18:03:56,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-14 18:03:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 18:03:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-14 18:03:56,718 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 43 [2020-10-14 18:03:56,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:56,719 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-14 18:03:56,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:03:56,719 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-14 18:03:56,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 18:03:56,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:56,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:56,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:03:56,721 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:56,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:56,721 INFO L82 PathProgramCache]: Analyzing trace with hash 318414399, now seen corresponding path program 5 times [2020-10-14 18:03:56,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:56,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609995323] [2020-10-14 18:03:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:56,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:56,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:57,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:57,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 18:03:57,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-14 18:03:57,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:57,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:03:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:03:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:57,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:57,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:57,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:57,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:57,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:57,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:57,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:03:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:57,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:57,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:57,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:03:57,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:57,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:57,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:03:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:57,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:57,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:03:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:57,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:57,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:03:57,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:57,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:57,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:03:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:57,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:03:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:57,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:03:57,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:57,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:57,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:03:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 18:03:57,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609995323] [2020-10-14 18:03:57,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:57,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 18:03:57,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923660858] [2020-10-14 18:03:57,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 18:03:57,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:57,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 18:03:57,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:03:57,440 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 7 states. [2020-10-14 18:03:57,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:57,565 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-14 18:03:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:03:57,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-14 18:03:57,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:57,567 INFO L225 Difference]: With dead ends: 101 [2020-10-14 18:03:57,568 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 18:03:57,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:03:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 18:03:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-14 18:03:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 18:03:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-14 18:03:57,589 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 51 [2020-10-14 18:03:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:57,589 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-14 18:03:57,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 18:03:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-14 18:03:57,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 18:03:57,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:57,597 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:57,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:03:57,597 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:57,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1711280965, now seen corresponding path program 6 times [2020-10-14 18:03:57,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:57,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424370758] [2020-10-14 18:03:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:57,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 18:04:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2782 [2020-10-14 18:04:00,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:00,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:04:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 18:04:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 18:04:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:01,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:01,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:01,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:01,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:01,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:01,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:04:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:01,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:01,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:01,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:01,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:01,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:01,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:04:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:01,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:01,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:01,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:04:01,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:01,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:04:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:01,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:01,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:01,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:04:01,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:01,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 18:04:01,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424370758] [2020-10-14 18:04:01,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:01,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:04:01,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547198699] [2020-10-14 18:04:01,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:04:01,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:01,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:04:01,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:04:01,291 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 19 states. [2020-10-14 18:04:03,256 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-14 18:04:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:03,499 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-10-14 18:04:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:04:03,500 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-14 18:04:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:03,502 INFO L225 Difference]: With dead ends: 70 [2020-10-14 18:04:03,504 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 18:04:03,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=213, Invalid=1047, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:04:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 18:04:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-14 18:04:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 18:04:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-14 18:04:03,526 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 55 [2020-10-14 18:04:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:03,527 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-14 18:04:03,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:04:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-14 18:04:03,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:04:03,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:03,530 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:03,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:04:03,530 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:03,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1680100622, now seen corresponding path program 7 times [2020-10-14 18:04:03,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:03,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262111019] [2020-10-14 18:04:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:04,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:04,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 18:04:04,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-10-14 18:04:04,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:04,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:04:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:04:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:04,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:04,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:04,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:04,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:04,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:04:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:04,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:04,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:04,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:04,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:04,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:04,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:04,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:04,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:04:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:04,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:04,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:04,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:04,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:04,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:04,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:04,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:04,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:04:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:04,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:04,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:04,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:04,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:04:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:04,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:04,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:04,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:04,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 18:04:04,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262111019] [2020-10-14 18:04:04,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:04,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:04:04,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674101331] [2020-10-14 18:04:04,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:04:04,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:04,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:04:04,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:04:04,570 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 8 states. [2020-10-14 18:04:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:04,679 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-14 18:04:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:04:04,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-14 18:04:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:04,680 INFO L225 Difference]: With dead ends: 123 [2020-10-14 18:04:04,681 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 18:04:04,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:04:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 18:04:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-14 18:04:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 18:04:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-14 18:04:04,706 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 63 [2020-10-14 18:04:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:04,706 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-14 18:04:04,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:04:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-14 18:04:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 18:04:04,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:04,710 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:04,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:04:04,711 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:04,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1789400942, now seen corresponding path program 8 times [2020-10-14 18:04:04,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:04,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011999395] [2020-10-14 18:04:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:04,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:07,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:07,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 18:04:07,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2781 [2020-10-14 18:04:07,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:07,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:04:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:04:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 18:04:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:08,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:08,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:08,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:08,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:08,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:04:08,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:04:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:08,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:08,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:08,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:08,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:08,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:08,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:08,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:08,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:04:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:08,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:08,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:08,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:08,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:08,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:08,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:08,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:08,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:08,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:04:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:08,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:08,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:08,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:08,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:08,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:08,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:08,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:08,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:04:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:08,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:08,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:08,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:08,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:08,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:08,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 13 proven. 52 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 18:04:08,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011999395] [2020-10-14 18:04:08,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:08,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:04:08,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84666232] [2020-10-14 18:04:08,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:04:08,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:08,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:04:08,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:04:08,850 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 22 states. [2020-10-14 18:04:10,394 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-14 18:04:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:11,688 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-10-14 18:04:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:04:11,689 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 67 [2020-10-14 18:04:11,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:11,690 INFO L225 Difference]: With dead ends: 82 [2020-10-14 18:04:11,690 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 18:04:11,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:04:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 18:04:11,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-14 18:04:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 18:04:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-14 18:04:11,703 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 67 [2020-10-14 18:04:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:11,704 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-14 18:04:11,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:04:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-14 18:04:11,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 18:04:11,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:11,705 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:11,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:04:11,705 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:11,706 INFO L82 PathProgramCache]: Analyzing trace with hash 714308261, now seen corresponding path program 9 times [2020-10-14 18:04:11,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:11,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458216901] [2020-10-14 18:04:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:11,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:11,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:13,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 18:04:13,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:13,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1365 [2020-10-14 18:04:13,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:13,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:04:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:04:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:13,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:13,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:13,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:13,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:13,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:13,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:04:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:13,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:13,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:13,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:13,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:13,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:13,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:04:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:13,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:13,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:13,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:13,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:13,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:13,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:04:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:13,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:13,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:13,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:13,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:13,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:13,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:04:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:13,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:13,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:13,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:13,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:13,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:13,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:04:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:13,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:13,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:13,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:13,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:13,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:13,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 18:04:13,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458216901] [2020-10-14 18:04:13,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:13,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:04:13,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033631795] [2020-10-14 18:04:13,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:04:13,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:13,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:04:13,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:04:13,182 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 9 states. [2020-10-14 18:04:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:13,331 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-14 18:04:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:04:13,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-14 18:04:13,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:13,334 INFO L225 Difference]: With dead ends: 145 [2020-10-14 18:04:13,334 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 18:04:13,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:04:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 18:04:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-14 18:04:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 18:04:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-10-14 18:04:13,360 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 75 [2020-10-14 18:04:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:13,362 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-10-14 18:04:13,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:04:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-10-14 18:04:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 18:04:13,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:13,365 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:13,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:04:13,366 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:13,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1077283551, now seen corresponding path program 10 times [2020-10-14 18:04:13,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:13,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229998160] [2020-10-14 18:04:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:13,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:17,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:17,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 18:04:17,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:17,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4137 [2020-10-14 18:04:17,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:17,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:17,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:04:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 18:04:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 18:04:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:18,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:18,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:18,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:18,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:18,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:04:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:18,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:18,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:18,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:18,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:18,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:04:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:18,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:04:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:18,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:18,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:18,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:18,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:18,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:18,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:04:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:18,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:18,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:18,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:18,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:18,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:18,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:18,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:04:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:18,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:18,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:18,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:18,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 18:04:18,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229998160] [2020-10-14 18:04:18,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:18,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:04:18,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572260152] [2020-10-14 18:04:18,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:04:18,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:18,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:04:18,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:04:18,860 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 25 states. [2020-10-14 18:04:21,632 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-14 18:04:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:21,911 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-10-14 18:04:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 18:04:21,911 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 79 [2020-10-14 18:04:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:21,912 INFO L225 Difference]: With dead ends: 94 [2020-10-14 18:04:21,912 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 18:04:21,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=380, Invalid=1876, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 18:04:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 18:04:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-14 18:04:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 18:04:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-10-14 18:04:21,927 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 79 [2020-10-14 18:04:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:21,927 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-10-14 18:04:21,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:04:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-10-14 18:04:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 18:04:21,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:21,928 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:21,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:04:21,929 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:21,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:21,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1906182824, now seen corresponding path program 11 times [2020-10-14 18:04:21,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:21,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328822256] [2020-10-14 18:04:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:21,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 18:04:23,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-10-14 18:04:23,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:04:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:04:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:23,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:23,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:23,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:04:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:23,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:23,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:23,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:04:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:23,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:23,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:04:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:23,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:23,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:23,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:04:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:23,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:23,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:04:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:23,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:23,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:23,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:04:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:23,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:23,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-14 18:04:23,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328822256] [2020-10-14 18:04:23,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:23,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:04:23,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248063982] [2020-10-14 18:04:23,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:04:23,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:04:23,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:04:23,580 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 10 states. [2020-10-14 18:04:23,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:23,716 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2020-10-14 18:04:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:04:23,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-14 18:04:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:23,718 INFO L225 Difference]: With dead ends: 167 [2020-10-14 18:04:23,718 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 18:04:23,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:04:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 18:04:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-14 18:04:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 18:04:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2020-10-14 18:04:23,741 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 87 [2020-10-14 18:04:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:23,741 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2020-10-14 18:04:23,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:04:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2020-10-14 18:04:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 18:04:23,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:23,743 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:23,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:04:23,744 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:23,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1663403476, now seen corresponding path program 12 times [2020-10-14 18:04:23,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:23,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141399170] [2020-10-14 18:04:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:25,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:27,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:27,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 18:04:27,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4224 [2020-10-14 18:04:27,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:27,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:04:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 18:04:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 18:04:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:29,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:29,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:29,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:04:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:04:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:29,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:29,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:04:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:29,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:29,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:04:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:29,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:29,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:29,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:04:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:29,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:29,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:29,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:04:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:29,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:29,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:29,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 19 proven. 114 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 18:04:29,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141399170] [2020-10-14 18:04:29,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:29,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:04:29,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789602447] [2020-10-14 18:04:29,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:04:29,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:04:29,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:04:29,675 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 28 states. [2020-10-14 18:04:31,167 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-14 18:04:31,497 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-14 18:04:31,769 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-14 18:04:32,021 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-14 18:04:32,249 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-14 18:04:32,486 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-14 18:04:32,746 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-14 18:04:32,923 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-14 18:04:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:33,184 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-10-14 18:04:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 18:04:33,184 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 91 [2020-10-14 18:04:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:33,186 INFO L225 Difference]: With dead ends: 106 [2020-10-14 18:04:33,186 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 18:04:33,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=483, Invalid=2379, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 18:04:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 18:04:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-14 18:04:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 18:04:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2020-10-14 18:04:33,201 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 91 [2020-10-14 18:04:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:33,202 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2020-10-14 18:04:33,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:04:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2020-10-14 18:04:33,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 18:04:33,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:33,203 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:33,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:04:33,203 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:33,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:33,204 INFO L82 PathProgramCache]: Analyzing trace with hash -788061429, now seen corresponding path program 13 times [2020-10-14 18:04:33,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:33,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182691043] [2020-10-14 18:04:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:33,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 18:04:35,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:35,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2087 [2020-10-14 18:04:35,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:04:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:04:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:35,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:35,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:35,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:04:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:35,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:35,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:35,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:04:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:35,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:35,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:35,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:04:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:35,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:04:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:35,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:35,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:35,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:04:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:35,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:35,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:35,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:35,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:04:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:35,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:35,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:35,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:04:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:35,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:35,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:04:35,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:35,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:35,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:35,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 14 proven. 49 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-14 18:04:35,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182691043] [2020-10-14 18:04:35,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:35,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:04:35,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346186338] [2020-10-14 18:04:35,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:04:35,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:35,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:04:35,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:04:35,431 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand 11 states. [2020-10-14 18:04:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:35,589 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2020-10-14 18:04:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:04:35,589 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2020-10-14 18:04:35,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:35,590 INFO L225 Difference]: With dead ends: 189 [2020-10-14 18:04:35,591 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 18:04:35,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:04:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 18:04:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-14 18:04:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 18:04:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2020-10-14 18:04:35,611 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 99 [2020-10-14 18:04:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:35,613 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2020-10-14 18:04:35,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:04:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2020-10-14 18:04:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 18:04:35,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:35,617 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:35,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:04:35,618 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:35,618 INFO L82 PathProgramCache]: Analyzing trace with hash -654653049, now seen corresponding path program 14 times [2020-10-14 18:04:35,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:35,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305190763] [2020-10-14 18:04:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:40,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:40,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 18:04:40,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:04:40,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:40,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 18:04:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 18:04:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 18:04:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:42,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:04:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:42,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:04:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:04:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:04:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:04:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:04:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:04:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 22 proven. 154 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-14 18:04:42,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305190763] [2020-10-14 18:04:42,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:42,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 18:04:42,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480081536] [2020-10-14 18:04:42,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 18:04:42,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:42,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 18:04:42,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:04:42,503 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 31 states. [2020-10-14 18:04:44,510 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-14 18:04:44,999 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-14 18:04:45,337 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-14 18:04:45,700 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-14 18:04:46,162 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-14 18:04:46,525 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-14 18:04:46,900 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-14 18:04:47,469 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-14 18:04:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:47,895 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2020-10-14 18:04:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:04:47,896 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 103 [2020-10-14 18:04:47,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:47,897 INFO L225 Difference]: With dead ends: 118 [2020-10-14 18:04:47,898 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 18:04:47,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=594, Invalid=2828, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 18:04:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 18:04:47,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-14 18:04:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 18:04:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-10-14 18:04:47,919 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 103 [2020-10-14 18:04:47,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:47,919 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-10-14 18:04:47,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 18:04:47,919 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-10-14 18:04:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 18:04:47,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:47,920 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:47,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:04:47,921 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:47,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:47,921 INFO L82 PathProgramCache]: Analyzing trace with hash 918750142, now seen corresponding path program 15 times [2020-10-14 18:04:47,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:47,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872447636] [2020-10-14 18:04:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 18:04:50,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:50,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2399 [2020-10-14 18:04:50,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:04:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 18:04:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 18:04:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:50,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:50,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:04:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:04:50,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:04:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:04:50,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:04:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:04:50,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:04:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:50,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:50,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:04:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:50,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:04:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:04:50,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:04:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:50,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:50,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:50,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:04:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:50,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 16 proven. 64 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2020-10-14 18:04:50,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872447636] [2020-10-14 18:04:50,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:50,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:04:50,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533715836] [2020-10-14 18:04:50,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:04:50,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:50,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:04:50,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:04:50,473 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 12 states. [2020-10-14 18:04:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:50,665 INFO L93 Difference]: Finished difference Result 211 states and 216 transitions. [2020-10-14 18:04:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:04:50,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-10-14 18:04:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:50,667 INFO L225 Difference]: With dead ends: 211 [2020-10-14 18:04:50,667 INFO L226 Difference]: Without dead ends: 120 [2020-10-14 18:04:50,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:04:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-14 18:04:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-14 18:04:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 18:04:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-10-14 18:04:50,682 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 111 [2020-10-14 18:04:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:50,682 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-10-14 18:04:50,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:04:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-10-14 18:04:50,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 18:04:50,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:50,684 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:50,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:04:50,684 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:50,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1611251770, now seen corresponding path program 16 times [2020-10-14 18:04:50,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:50,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927326330] [2020-10-14 18:04:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:55,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:55,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 18:04:55,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:55,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:04:55,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:55,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 18:04:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 18:04:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 18:04:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:56,222 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 27 [2020-10-14 18:04:56,545 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 21 [2020-10-14 18:04:56,725 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 35 [2020-10-14 18:04:57,051 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 35 [2020-10-14 18:04:57,216 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 21 [2020-10-14 18:04:57,431 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 35 [2020-10-14 18:04:57,628 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 21 [2020-10-14 18:04:57,858 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 28 [2020-10-14 18:04:58,120 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 21 [2020-10-14 18:04:58,499 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 21 [2020-10-14 18:05:00,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:00,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:00,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:00,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:00,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:00,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:00,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:00,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:00,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:05:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:00,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:00,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:00,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:00,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:00,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:00,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:00,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:00,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:00,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:05:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:00,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:00,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:00,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:00,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:00,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:00,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:00,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:00,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:00,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:05:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:00,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:00,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:00,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:00,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:00,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:00,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:05:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:00,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:00,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:00,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:00,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:00,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:00,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:05:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:00,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:00,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:00,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:00,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:00,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:00,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:00,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:05:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:00,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:00,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:00,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:00,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:00,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:00,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:00,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:00,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:05:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:00,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:00,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:00,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:00,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:00,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:00,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:00,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:00,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:05:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:00,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:00,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:00,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:00,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:00,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 25 proven. 200 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-14 18:05:00,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927326330] [2020-10-14 18:05:00,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:00,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 18:05:00,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695401784] [2020-10-14 18:05:00,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 18:05:00,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:00,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 18:05:00,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1049, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:05:00,434 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 34 states. [2020-10-14 18:05:03,045 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-14 18:05:03,650 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-10-14 18:05:04,107 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:05:05,007 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-14 18:05:05,849 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-14 18:05:06,822 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-14 18:05:07,683 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-14 18:05:08,521 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-14 18:05:09,483 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-14 18:05:10,343 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-14 18:05:11,275 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:05:11,766 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-14 18:05:12,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:12,517 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2020-10-14 18:05:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 18:05:12,519 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 115 [2020-10-14 18:05:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:12,521 INFO L225 Difference]: With dead ends: 130 [2020-10-14 18:05:12,521 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 18:05:12,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=728, Invalid=3562, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 18:05:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 18:05:12,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-10-14 18:05:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 18:05:12,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2020-10-14 18:05:12,540 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 115 [2020-10-14 18:05:12,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:12,543 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2020-10-14 18:05:12,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 18:05:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2020-10-14 18:05:12,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 18:05:12,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:12,545 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:12,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:05:12,545 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:12,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:12,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1045796721, now seen corresponding path program 17 times [2020-10-14 18:05:12,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:12,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933846243] [2020-10-14 18:05:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 18:05:16,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:05:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3485 [2020-10-14 18:05:16,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:05:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 18:05:16,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:16,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:16,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:05:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:16,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:16,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:16,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:05:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:16,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:16,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:05:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:16,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:16,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:05:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:16,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:16,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:05:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:16,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:16,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:05:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:16,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:16,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:05:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:16,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:16,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:05:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:16,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:16,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:05:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:16,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:16,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:16,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:16,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:16,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 18 proven. 81 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2020-10-14 18:05:16,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933846243] [2020-10-14 18:05:16,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:16,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:05:16,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240207886] [2020-10-14 18:05:16,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:05:16,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:16,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:05:16,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:05:16,208 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 13 states. [2020-10-14 18:05:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:16,445 INFO L93 Difference]: Finished difference Result 233 states and 238 transitions. [2020-10-14 18:05:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:05:16,446 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 123 [2020-10-14 18:05:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:16,447 INFO L225 Difference]: With dead ends: 233 [2020-10-14 18:05:16,447 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 18:05:16,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:05:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 18:05:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-14 18:05:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 18:05:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-14 18:05:16,465 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 123 [2020-10-14 18:05:16,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:16,465 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-14 18:05:16,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:05:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-14 18:05:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 18:05:16,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:16,467 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:16,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:05:16,467 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash -242062867, now seen corresponding path program 18 times [2020-10-14 18:05:16,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:16,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630268251] [2020-10-14 18:05:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:16,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:16,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:21,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:21,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 18:05:21,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:05:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 18:05:21,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:21,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 18:05:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 18:05:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 18:05:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:22,584 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 18 [2020-10-14 18:05:22,822 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 32 [2020-10-14 18:05:23,020 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 20 [2020-10-14 18:05:23,357 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 26 [2020-10-14 18:05:23,830 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 34 [2020-10-14 18:05:24,134 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 21 [2020-10-14 18:05:24,519 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 35 [2020-10-14 18:05:24,899 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 21 [2020-10-14 18:05:25,476 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 28 [2020-10-14 18:05:25,903 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 21 [2020-10-14 18:05:26,496 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 28 [2020-10-14 18:05:26,920 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 21 [2020-10-14 18:05:27,458 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 26 [2020-10-14 18:05:28,229 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 28 [2020-10-14 18:05:28,760 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 21 [2020-10-14 18:05:29,262 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 28 [2020-10-14 18:05:29,533 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 20 [2020-10-14 18:05:30,094 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 21 [2020-10-14 18:05:30,367 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 21 [2020-10-14 18:05:30,606 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-14 18:05:30,958 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-14 18:05:31,251 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-14 18:05:31,551 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-14 18:05:31,865 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-14 18:05:32,162 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 22 [2020-10-14 18:05:32,479 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 22 [2020-10-14 18:05:32,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:32,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:32,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:32,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:32,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:32,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:05:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:32,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:32,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:32,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:05:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:32,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:32,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:05:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:32,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:32,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:32,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:05:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:32,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:32,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:05:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:32,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:32,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:05:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:32,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:32,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:32,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:05:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:32,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:32,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:05:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:32,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:32,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 18:05:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:32,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:32,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:32,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:32,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 28 proven. 252 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-14 18:05:33,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630268251] [2020-10-14 18:05:33,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:33,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 18:05:33,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27798446] [2020-10-14 18:05:33,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 18:05:33,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:33,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 18:05:33,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1116, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:05:33,042 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 35 states. [2020-10-14 18:05:36,502 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-14 18:05:37,041 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2020-10-14 18:05:37,580 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-14 18:05:38,022 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2020-10-14 18:05:38,700 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2020-10-14 18:05:39,830 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-14 18:05:40,993 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-14 18:05:42,360 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-14 18:05:43,783 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-14 18:05:45,232 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-14 18:05:46,514 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-14 18:05:47,900 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-14 18:05:49,185 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-14 18:05:50,760 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-14 18:05:51,788 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-14 18:05:52,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:52,936 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-10-14 18:05:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 18:05:52,939 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 127 [2020-10-14 18:05:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:52,941 INFO L225 Difference]: With dead ends: 142 [2020-10-14 18:05:52,941 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 18:05:52,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=811, Invalid=3881, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 18:05:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 18:05:52,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-10-14 18:05:52,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-14 18:05:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-10-14 18:05:52,957 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 127 [2020-10-14 18:05:52,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:52,957 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-10-14 18:05:52,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 18:05:52,957 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-10-14 18:05:52,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 18:05:52,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:52,961 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:52,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:05:52,962 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:52,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1593909724, now seen corresponding path program 19 times [2020-10-14 18:05:52,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:52,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592736705] [2020-10-14 18:05:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:52,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:57,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:57,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 18:05:57,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:05:57,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 18:05:57,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:57,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:05:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 18:05:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:05:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:58,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:05:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:05:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:05:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:05:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:05:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:05:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:05:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:05:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 18:05:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:58,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 18:05:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:58,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:58,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:58,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:58,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 20 proven. 100 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-14 18:05:58,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592736705] [2020-10-14 18:05:58,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:58,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:05:58,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025537602] [2020-10-14 18:05:58,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:05:58,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:58,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:05:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:05:58,231 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 14 states. [2020-10-14 18:05:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:58,479 INFO L93 Difference]: Finished difference Result 255 states and 260 transitions. [2020-10-14 18:05:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:05:58,481 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 135 [2020-10-14 18:05:58,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:58,483 INFO L225 Difference]: With dead ends: 255 [2020-10-14 18:05:58,483 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 18:05:58,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:05:58,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 18:05:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2020-10-14 18:05:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 18:05:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2020-10-14 18:05:58,503 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 135 [2020-10-14 18:05:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:58,503 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2020-10-14 18:05:58,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:05:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2020-10-14 18:05:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 18:05:58,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:58,505 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:58,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:05:58,505 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:58,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:58,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1096074912, now seen corresponding path program 20 times [2020-10-14 18:05:58,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:58,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824004030] [2020-10-14 18:05:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:02,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 18:06:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:06:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:06:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:03,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 18:06:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 18:06:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 18:06:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:04,152 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 25 [2020-10-14 18:06:04,428 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 18 [2020-10-14 18:06:04,637 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 26 [2020-10-14 18:06:05,009 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 19 [2020-10-14 18:06:05,299 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 26 [2020-10-14 18:06:05,578 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 19 [2020-10-14 18:06:05,868 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 26 [2020-10-14 18:06:06,151 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 19 [2020-10-14 18:06:06,314 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 26 [2020-10-14 18:06:06,602 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 19 [2020-10-14 18:06:06,829 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 26 [2020-10-14 18:06:07,324 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 26 [2020-10-14 18:06:11,704 WARN L193 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 105 DAG size of output: 19 [2020-10-14 18:06:11,930 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 26 [2020-10-14 18:06:12,185 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 19 [2020-10-14 18:06:12,393 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 26 [2020-10-14 18:06:15,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:15,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:15,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:06:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:15,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:06:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:15,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:06:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:15,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:06:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:15,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:06:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:15,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:06:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:15,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:06:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:15,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:06:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:15,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 18:06:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 18:06:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:15,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:15,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:15,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:15,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 31 proven. 310 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-14 18:06:15,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824004030] [2020-10-14 18:06:15,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:15,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 18:06:15,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448534987] [2020-10-14 18:06:15,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 18:06:15,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:15,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 18:06:15,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1473, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 18:06:15,217 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 40 states. [2020-10-14 18:06:20,286 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-10-14 18:06:20,723 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-14 18:06:21,421 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-14 18:06:22,240 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-10-14 18:06:23,827 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:06:25,105 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:06:26,504 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:06:27,801 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:06:29,327 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:06:30,728 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:06:32,235 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:06:33,442 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-14 18:06:34,959 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2020-10-14 18:06:36,273 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-10-14 18:06:37,059 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2020-10-14 18:06:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:38,498 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2020-10-14 18:06:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 18:06:38,503 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 139 [2020-10-14 18:06:38,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:38,504 INFO L225 Difference]: With dead ends: 154 [2020-10-14 18:06:38,504 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 18:06:38,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=1025, Invalid=4981, Unknown=0, NotChecked=0, Total=6006 [2020-10-14 18:06:38,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 18:06:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2020-10-14 18:06:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-14 18:06:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2020-10-14 18:06:38,525 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 139 [2020-10-14 18:06:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:38,525 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2020-10-14 18:06:38,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 18:06:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2020-10-14 18:06:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 18:06:38,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:38,527 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:38,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:06:38,527 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:38,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:38,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1384044503, now seen corresponding path program 21 times [2020-10-14 18:06:38,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:38,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612201685] [2020-10-14 18:06:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:38,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 18:06:43,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:06:43,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 18:06:43,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:06:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 18:06:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 18:06:43,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:06:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:43,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:06:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:43,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:06:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:43,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:06:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:06:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:06:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:06:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:06:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 18:06:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:44,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 18:06:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:44,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:44,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:44,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:44,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:06:44,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:06:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:44,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:44,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:44,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:44,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:44,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:44,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:44,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 22 proven. 121 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2020-10-14 18:06:44,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612201685] [2020-10-14 18:06:44,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:44,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:06:44,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273414956] [2020-10-14 18:06:44,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:06:44,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:44,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:06:44,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:06:44,029 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 15 states. [2020-10-14 18:06:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:44,444 INFO L93 Difference]: Finished difference Result 277 states and 282 transitions. [2020-10-14 18:06:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:06:44,446 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-10-14 18:06:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:44,448 INFO L225 Difference]: With dead ends: 277 [2020-10-14 18:06:44,448 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 18:06:44,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:06:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 18:06:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2020-10-14 18:06:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-14 18:06:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2020-10-14 18:06:44,470 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 147 [2020-10-14 18:06:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:44,470 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2020-10-14 18:06:44,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:06:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2020-10-14 18:06:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 18:06:44,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:44,472 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:44,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:06:44,472 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:44,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1114581421, now seen corresponding path program 22 times [2020-10-14 18:06:44,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:44,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141964629] [2020-10-14 18:06:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 18:06:49,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:06:49,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 18:06:49,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:06:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 18:06:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 18:06:49,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:49,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:49,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:49,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:06:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:06:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:06:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:06:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:49,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:06:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:06:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:06:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 18:06:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 18:06:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 18:06:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:49,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 18:06:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:49,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 22 proven. 144 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2020-10-14 18:06:49,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141964629] [2020-10-14 18:06:49,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:49,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:06:49,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296008186] [2020-10-14 18:06:49,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:06:49,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:49,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:06:49,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:06:49,880 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 16 states. [2020-10-14 18:06:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:50,206 INFO L93 Difference]: Finished difference Result 283 states and 288 transitions. [2020-10-14 18:06:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:06:50,208 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 151 [2020-10-14 18:06:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:50,210 INFO L225 Difference]: With dead ends: 283 [2020-10-14 18:06:50,210 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 18:06:50,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:06:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 18:06:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-10-14 18:06:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 18:06:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2020-10-14 18:06:50,230 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 151 [2020-10-14 18:06:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:50,231 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2020-10-14 18:06:50,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:06:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2020-10-14 18:06:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 18:06:50,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:50,232 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:50,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:06:50,233 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:50,233 INFO L82 PathProgramCache]: Analyzing trace with hash -492034353, now seen corresponding path program 23 times [2020-10-14 18:06:50,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:50,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324856829] [2020-10-14 18:06:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 18:06:55,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:06:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:06:55,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:06:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:06:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 18:06:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:55,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:06:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:06:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:55,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:06:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:55,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:06:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:55,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:06:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:06:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:55,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:06:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:55,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 18:06:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:55,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 18:06:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:55,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:06:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 18:06:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:55,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 22 proven. 169 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2020-10-14 18:06:55,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324856829] [2020-10-14 18:06:55,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:55,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:06:55,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477148387] [2020-10-14 18:06:55,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:06:55,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:55,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:06:55,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:06:55,656 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 17 states. [2020-10-14 18:06:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:56,112 INFO L93 Difference]: Finished difference Result 289 states and 294 transitions. [2020-10-14 18:06:56,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:06:56,114 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 155 [2020-10-14 18:06:56,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:56,116 INFO L225 Difference]: With dead ends: 289 [2020-10-14 18:06:56,116 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 18:06:56,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:06:56,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 18:06:56,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2020-10-14 18:06:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-14 18:06:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2020-10-14 18:06:56,134 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 155 [2020-10-14 18:06:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:56,135 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2020-10-14 18:06:56,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:06:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2020-10-14 18:06:56,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 18:06:56,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:56,136 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:56,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:06:56,136 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:56,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1822701237, now seen corresponding path program 24 times [2020-10-14 18:06:56,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:56,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378748572] [2020-10-14 18:06:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 18:07:01,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 18:07:01,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:07:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 18:07:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 18:07:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:01,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:01,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:07:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:01,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:07:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:01,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:07:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:01,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:07:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:01,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:07:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:01,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:07:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:01,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 18:07:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:01,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 18:07:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:01,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 18:07:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:01,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 18:07:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:01,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 18:07:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:01,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:01,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:01,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:01,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:01,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:01,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 22 proven. 196 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2020-10-14 18:07:01,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378748572] [2020-10-14 18:07:01,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:01,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:07:01,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012111680] [2020-10-14 18:07:01,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:07:01,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:01,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:07:01,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:07:01,628 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 18 states. [2020-10-14 18:07:02,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:02,113 INFO L93 Difference]: Finished difference Result 295 states and 300 transitions. [2020-10-14 18:07:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:07:02,116 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 159 [2020-10-14 18:07:02,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:02,117 INFO L225 Difference]: With dead ends: 295 [2020-10-14 18:07:02,117 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 18:07:02,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:07:02,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 18:07:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2020-10-14 18:07:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 18:07:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2020-10-14 18:07:02,141 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 159 [2020-10-14 18:07:02,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:02,141 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2020-10-14 18:07:02,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:07:02,142 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2020-10-14 18:07:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 18:07:02,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:02,143 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:02,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:07:02,143 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:02,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1386921415, now seen corresponding path program 25 times [2020-10-14 18:07:02,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:02,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858129929] [2020-10-14 18:07:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 18:07:07,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 18:07:07,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:07:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 18:07:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 18:07:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:07,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:07,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:07,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:07:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:07,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:07:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:07,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:07:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:07,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:07:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:07,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:07:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:07,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:07:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:07,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 18:07:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:07,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 18:07:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:07,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:07:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:07,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 18:07:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:07:07,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:07,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 18:07:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:07,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:07,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:07,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:07,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:07,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:07,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:07,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 22 proven. 225 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2020-10-14 18:07:07,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858129929] [2020-10-14 18:07:07,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:07,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:07:07,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12212474] [2020-10-14 18:07:07,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:07:07,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:07,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:07:07,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:07:07,703 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 19 states. [2020-10-14 18:07:08,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:08,171 INFO L93 Difference]: Finished difference Result 301 states and 306 transitions. [2020-10-14 18:07:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:07:08,173 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 163 [2020-10-14 18:07:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:08,175 INFO L225 Difference]: With dead ends: 301 [2020-10-14 18:07:08,175 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 18:07:08,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:07:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 18:07:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2020-10-14 18:07:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 18:07:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions. [2020-10-14 18:07:08,194 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 163 [2020-10-14 18:07:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:08,195 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 172 transitions. [2020-10-14 18:07:08,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:07:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 172 transitions. [2020-10-14 18:07:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 18:07:08,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:08,196 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:08,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:07:08,196 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash -719059901, now seen corresponding path program 26 times [2020-10-14 18:07:08,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:08,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393983811] [2020-10-14 18:07:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:08,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:08,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 18:07:13,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:13,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 18:07:13,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:07:13,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 18:07:13,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 18:07:13,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:13,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:13,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:07:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:13,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:07:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:13,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:07:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:13,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:07:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:13,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:07:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:13,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 18:07:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:13,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 18:07:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:13,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 18:07:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:13,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 18:07:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:13,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 18:07:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:13,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 18:07:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:13,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:13,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:13,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:13,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:13,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:13,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 22 proven. 256 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2020-10-14 18:07:13,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393983811] [2020-10-14 18:07:13,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:13,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:07:13,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205850214] [2020-10-14 18:07:13,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:07:13,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:13,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:07:13,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:07:13,786 INFO L87 Difference]: Start difference. First operand 170 states and 172 transitions. Second operand 20 states. [2020-10-14 18:07:14,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:14,271 INFO L93 Difference]: Finished difference Result 307 states and 312 transitions. [2020-10-14 18:07:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:07:14,274 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 167 [2020-10-14 18:07:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:14,275 INFO L225 Difference]: With dead ends: 307 [2020-10-14 18:07:14,275 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 18:07:14,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:07:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 18:07:14,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-10-14 18:07:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 18:07:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 176 transitions. [2020-10-14 18:07:14,297 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 176 transitions. Word has length 167 [2020-10-14 18:07:14,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:14,298 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 176 transitions. [2020-10-14 18:07:14,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:07:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 176 transitions. [2020-10-14 18:07:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 18:07:14,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:14,299 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:14,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:07:14,300 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:14,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:14,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2133680961, now seen corresponding path program 27 times [2020-10-14 18:07:14,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:14,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593824486] [2020-10-14 18:07:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 18:07:19,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:07:19,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:07:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:07:19,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:19,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:19,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:07:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:19,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:07:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:19,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:07:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:19,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:07:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:19,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:07:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:19,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 18:07:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:19,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 18:07:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:19,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:07:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:19,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 18:07:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 18:07:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:19,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 18:07:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:19,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:19,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:19,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:19,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:19,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:19,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 22 proven. 289 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2020-10-14 18:07:19,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593824486] [2020-10-14 18:07:19,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:19,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:07:19,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359726962] [2020-10-14 18:07:19,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:07:19,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:19,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:07:19,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:07:19,933 INFO L87 Difference]: Start difference. First operand 174 states and 176 transitions. Second operand 21 states. [2020-10-14 18:07:20,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:20,609 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2020-10-14 18:07:20,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:07:20,611 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 171 [2020-10-14 18:07:20,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:20,613 INFO L225 Difference]: With dead ends: 313 [2020-10-14 18:07:20,614 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 18:07:20,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:07:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 18:07:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2020-10-14 18:07:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-14 18:07:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2020-10-14 18:07:20,641 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 171 [2020-10-14 18:07:20,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:20,641 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2020-10-14 18:07:20,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:07:20,642 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2020-10-14 18:07:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 18:07:20,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:20,643 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:20,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:07:20,643 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:20,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:20,644 INFO L82 PathProgramCache]: Analyzing trace with hash -314472645, now seen corresponding path program 28 times [2020-10-14 18:07:20,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:20,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116690092] [2020-10-14 18:07:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:20,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:25,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:25,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 18:07:25,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 18:07:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:25,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:07:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 18:07:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:26,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:26,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:07:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:26,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:07:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:26,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:07:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:26,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:07:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:26,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 18:07:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:26,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 18:07:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:26,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 18:07:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:26,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 18:07:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:26,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 18:07:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 18:07:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:26,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-14 18:07:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:26,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:26,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:26,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:26,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:26,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 22 proven. 324 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2020-10-14 18:07:26,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116690092] [2020-10-14 18:07:26,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:26,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:07:26,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871737218] [2020-10-14 18:07:26,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:07:26,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:26,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:07:26,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:07:26,416 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 22 states. [2020-10-14 18:07:26,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:26,969 INFO L93 Difference]: Finished difference Result 319 states and 324 transitions. [2020-10-14 18:07:26,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:07:26,971 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 175 [2020-10-14 18:07:26,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:26,973 INFO L225 Difference]: With dead ends: 319 [2020-10-14 18:07:26,973 INFO L226 Difference]: Without dead ends: 184 [2020-10-14 18:07:26,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:07:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-14 18:07:26,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2020-10-14 18:07:26,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 18:07:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2020-10-14 18:07:27,000 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 175 [2020-10-14 18:07:27,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:27,000 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions. [2020-10-14 18:07:27,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:07:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions. [2020-10-14 18:07:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 18:07:27,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:27,002 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:27,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:07:27,002 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:27,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1669055415, now seen corresponding path program 29 times [2020-10-14 18:07:27,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:27,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791227573] [2020-10-14 18:07:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 18:07:32,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 18:07:32,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:07:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 18:07:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 18:07:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:32,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:32,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:32,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:07:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:07:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:07:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:07:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 18:07:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 18:07:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:07:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 18:07:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 18:07:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 18:07:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 18:07:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:32,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:32,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:32,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:32,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:32,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:32,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 22 proven. 361 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2020-10-14 18:07:32,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791227573] [2020-10-14 18:07:32,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:32,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:07:32,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432091214] [2020-10-14 18:07:32,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:07:32,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:32,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:07:32,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:07:32,815 INFO L87 Difference]: Start difference. First operand 182 states and 184 transitions. Second operand 23 states. [2020-10-14 18:07:33,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:33,436 INFO L93 Difference]: Finished difference Result 325 states and 330 transitions. [2020-10-14 18:07:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:07:33,439 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 179 [2020-10-14 18:07:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:33,440 INFO L225 Difference]: With dead ends: 325 [2020-10-14 18:07:33,441 INFO L226 Difference]: Without dead ends: 188 [2020-10-14 18:07:33,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:07:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-14 18:07:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2020-10-14 18:07:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-14 18:07:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2020-10-14 18:07:33,459 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 179 [2020-10-14 18:07:33,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:33,460 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2020-10-14 18:07:33,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:07:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2020-10-14 18:07:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 18:07:33,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:33,461 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:33,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:07:33,462 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:33,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:33,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1577865779, now seen corresponding path program 30 times [2020-10-14 18:07:33,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:33,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663806972] [2020-10-14 18:07:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:38,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:38,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 18:07:38,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 18:07:38,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:38,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:07:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 18:07:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 18:07:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:39,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:07:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:07:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:07:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 18:07:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 18:07:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 18:07:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 18:07:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 18:07:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 18:07:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-14 18:07:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 18:07:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:39,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1284 backedges. 22 proven. 400 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2020-10-14 18:07:39,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663806972] [2020-10-14 18:07:39,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:39,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:07:39,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031189189] [2020-10-14 18:07:39,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:07:39,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:39,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:07:39,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:07:39,323 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand 24 states. [2020-10-14 18:07:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:39,973 INFO L93 Difference]: Finished difference Result 331 states and 336 transitions. [2020-10-14 18:07:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:07:39,975 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 183 [2020-10-14 18:07:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:39,977 INFO L225 Difference]: With dead ends: 331 [2020-10-14 18:07:39,977 INFO L226 Difference]: Without dead ends: 192 [2020-10-14 18:07:39,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:07:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-14 18:07:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-10-14 18:07:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-14 18:07:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2020-10-14 18:07:40,004 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 183 [2020-10-14 18:07:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:40,004 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2020-10-14 18:07:40,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:07:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2020-10-14 18:07:40,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 18:07:40,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:40,006 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:40,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:07:40,006 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:40,007 INFO L82 PathProgramCache]: Analyzing trace with hash 150876847, now seen corresponding path program 31 times [2020-10-14 18:07:40,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:40,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190273343] [2020-10-14 18:07:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 18:07:45,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-14 18:07:45,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:07:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 18:07:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:07:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:07:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:07:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 18:07:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 18:07:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:07:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 18:07:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 18:07:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 18:07:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 18:07:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-14 18:07:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1366 backedges. 22 proven. 441 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2020-10-14 18:07:45,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190273343] [2020-10-14 18:07:45,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:45,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:07:45,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011721868] [2020-10-14 18:07:45,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:07:45,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:45,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:07:45,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:07:45,996 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 25 states. [2020-10-14 18:07:46,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:46,558 INFO L93 Difference]: Finished difference Result 337 states and 342 transitions. [2020-10-14 18:07:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:07:46,560 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 187 [2020-10-14 18:07:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:46,562 INFO L225 Difference]: With dead ends: 337 [2020-10-14 18:07:46,562 INFO L226 Difference]: Without dead ends: 196 [2020-10-14 18:07:46,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:07:46,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-14 18:07:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-10-14 18:07:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 18:07:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2020-10-14 18:07:46,582 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 187 [2020-10-14 18:07:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:46,582 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 196 transitions. [2020-10-14 18:07:46,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:07:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 196 transitions. [2020-10-14 18:07:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 18:07:46,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:46,584 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:46,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:07:46,584 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:46,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:46,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1042520789, now seen corresponding path program 32 times [2020-10-14 18:07:46,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:46,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535494204] [2020-10-14 18:07:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking...