/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-crafted/xor3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:39:40,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:39:40,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:39:40,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:39:40,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:39:40,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:39:40,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:39:40,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:39:40,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:39:40,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:39:40,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:39:40,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:39:40,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:39:40,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:39:40,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:39:40,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:39:40,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:39:40,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:39:40,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:39:40,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:39:40,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:39:40,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:39:40,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:39:40,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:39:40,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:39:40,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:39:40,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:39:40,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:39:40,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:39:40,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:39:40,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:39:40,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:39:40,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:39:40,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:39:40,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:39:40,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:39:40,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:39:40,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:39:40,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:39:40,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:39:40,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:39:40,318 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 17:39:40,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:39:40,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:39:40,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:39:40,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:39:40,343 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:39:40,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:39:40,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:39:40,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:39:40,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:39:40,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:39:40,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:39:40,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:39:40,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:39:40,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:39:40,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:39:40,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:39:40,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:39:40,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:39:40,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:39:40,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:39:40,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:39:40,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:39:40,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:39:40,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:39:40,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:39:40,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:39:40,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:39:40,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:39:40,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:39:40,351 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 17:39:40,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:39:40,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:39:40,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:39:40,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:39:40,679 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:39:40,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor3.i [2020-10-14 17:39:40,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/101fd92d1/181e35dff66d47049418feaa6ba684e5/FLAG4cd38f957 [2020-10-14 17:39:41,164 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:39:41,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/xor3.i [2020-10-14 17:39:41,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/101fd92d1/181e35dff66d47049418feaa6ba684e5/FLAG4cd38f957 [2020-10-14 17:39:41,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/101fd92d1/181e35dff66d47049418feaa6ba684e5 [2020-10-14 17:39:41,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:39:41,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:39:41,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:39:41,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:39:41,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:39:41,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:39:41" (1/1) ... [2020-10-14 17:39:41,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d0024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41, skipping insertion in model container [2020-10-14 17:39:41,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:39:41" (1/1) ... [2020-10-14 17:39:41,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:39:41,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:39:41,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:39:41,846 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:39:41,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:39:41,913 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:39:41,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41 WrapperNode [2020-10-14 17:39:41,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:39:41,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:39:41,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:39:41,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:39:42,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41" (1/1) ... [2020-10-14 17:39:42,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41" (1/1) ... [2020-10-14 17:39:42,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41" (1/1) ... [2020-10-14 17:39:42,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41" (1/1) ... [2020-10-14 17:39:42,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41" (1/1) ... [2020-10-14 17:39:42,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41" (1/1) ... [2020-10-14 17:39:42,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41" (1/1) ... [2020-10-14 17:39:42,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:39:42,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:39:42,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:39:42,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:39:42,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41" (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 17:39:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:39:42,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:39:42,202 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2020-10-14 17:39:42,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:39:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:39:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:39:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2020-10-14 17:39:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:39:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:39:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:39:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:39:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:39:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:39:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:39:42,443 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:39:42,444 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:39:42,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:39:42 BoogieIcfgContainer [2020-10-14 17:39:42,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:39:42,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:39:42,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:39:42,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:39:42,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:39:41" (1/3) ... [2020-10-14 17:39:42,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a1d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:39:42, skipping insertion in model container [2020-10-14 17:39:42,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:41" (2/3) ... [2020-10-14 17:39:42,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a1d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:39:42, skipping insertion in model container [2020-10-14 17:39:42,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:39:42" (3/3) ... [2020-10-14 17:39:42,456 INFO L109 eAbstractionObserver]: Analyzing ICFG xor3.i [2020-10-14 17:39:42,468 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:39:42,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:39:42,494 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:39:42,528 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:39:42,528 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:39:42,529 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:39:42,529 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:39:42,529 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:39:42,529 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:39:42,529 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:39:42,529 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:39:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-14 17:39:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:39:42,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:42,562 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:42,562 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:42,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-14 17:39:42,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:42,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000565493] [2020-10-14 17:39:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:43,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:39:43,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:43,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 17:39:43,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:43,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 17:39:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 17:39:43,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:43,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:43,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 17:39:43,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:43,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:43,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 17:39:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:43,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 17:39:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:39:43,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 17:39:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:43,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:43,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 17:39:43,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:43,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 17:39:43,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:43,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:43,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:39:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:43,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:43,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 17:39:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:43,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 17:39:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 17:39:43,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000565493] [2020-10-14 17:39:43,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:43,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-14 17:39:43,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808722688] [2020-10-14 17:39:43,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 17:39:43,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:43,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 17:39:43,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 17:39:43,389 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-14 17:39:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:43,495 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-14 17:39:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 17:39:43,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 17:39:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:43,505 INFO L225 Difference]: With dead ends: 54 [2020-10-14 17:39:43,506 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 17:39:43,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 17:39:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 17:39:43,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-14 17:39:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 17:39:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-14 17:39:43,553 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-14 17:39:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:43,553 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-14 17:39:43,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 17:39:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-14 17:39:43,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:39:43,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:43,557 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:43,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:39:43,558 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:43,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:43,559 INFO L82 PathProgramCache]: Analyzing trace with hash -595992629, now seen corresponding path program 1 times [2020-10-14 17:39:43,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:43,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571050677] [2020-10-14 17:39:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:43,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:39:44,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-14 17:39:44,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 17:39:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:39:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:44,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:44,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:44,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:39:44,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:44,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 17:39:44,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:39:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:44,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 17:39:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:44,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:44,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 17:39:44,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:39:44,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:44,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:39:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:44,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 17:39:44,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:39:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 17:39:44,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571050677] [2020-10-14 17:39:44,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:39:44,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:39:44,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570164124] [2020-10-14 17:39:44,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:39:44,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:44,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:39:44,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:39:44,705 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-14 17:39:44,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:44,820 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-14 17:39:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:39:44,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 17:39:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:44,823 INFO L225 Difference]: With dead ends: 45 [2020-10-14 17:39:44,824 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 17:39:44,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:39:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 17:39:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 17:39:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 17:39:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-14 17:39:44,842 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-14 17:39:44,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:44,843 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-14 17:39:44,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:39:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-14 17:39:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 17:39:44,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:44,850 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:44,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:39:44,851 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1309759401, now seen corresponding path program 1 times [2020-10-14 17:39:44,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:44,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123307339] [2020-10-14 17:39:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:47,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:39:47,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:47,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2326 [2020-10-14 17:39:47,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:47,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 17:39:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:39:47,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:47,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:47,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:47,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:47,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:47,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:47,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:47,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 17:39:47,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:47,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:39:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:47,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 17:39:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:47,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:47,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:47,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:47,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 17:39:47,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:47,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:39:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:39:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:47,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:47,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:47,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 17:39:47,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:47,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:39:47,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 17:39:47,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123307339] [2020-10-14 17:39:47,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:47,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:39:47,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858444279] [2020-10-14 17:39:47,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:39:47,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:47,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:39:47,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:39:47,316 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-10-14 17:39:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:47,421 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-14 17:39:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:39:47,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-14 17:39:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:47,422 INFO L225 Difference]: With dead ends: 48 [2020-10-14 17:39:47,423 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 17:39:47,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:39:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 17:39:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 17:39:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 17:39:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 17:39:47,430 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2020-10-14 17:39:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:47,431 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 17:39:47,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:39:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 17:39:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 17:39:47,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:47,433 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:47,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:39:47,433 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:47,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1311690489, now seen corresponding path program 2 times [2020-10-14 17:39:47,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:47,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428697011] [2020-10-14 17:39:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:51,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:39:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4428 [2020-10-14 17:39:51,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:51,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:39:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 17:39:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:39:51,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:51,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:51,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:51,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:51,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:51,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:51,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:51,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:51,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:51,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:39:51,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:39:51,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:51,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:39:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:39:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:51,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 17:39:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:51,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:51,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:51,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:39:51,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 17:39:51,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:51,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:39:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:39:51,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:39:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:52,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:39:52,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 17:39:52,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:52,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:39:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:39:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 17:39:52,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428697011] [2020-10-14 17:39:52,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:52,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:39:52,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978323589] [2020-10-14 17:39:52,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:39:52,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:52,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:39:52,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:39:52,036 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-14 17:39:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:52,177 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-14 17:39:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:39:52,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-14 17:39:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:52,180 INFO L225 Difference]: With dead ends: 52 [2020-10-14 17:39:52,180 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 17:39:52,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:39:52,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 17:39:52,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 17:39:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 17:39:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-14 17:39:52,197 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-14 17:39:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:52,197 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-14 17:39:52,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:39:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-14 17:39:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 17:39:52,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:52,201 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:52,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:39:52,202 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:52,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1548340197, now seen corresponding path program 3 times [2020-10-14 17:39:52,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:52,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770819339] [2020-10-14 17:39:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:52,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:57,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:39:57,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:39:57,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:57,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:39:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 17:39:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:39:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:57,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:57,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:57,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:57,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:39:57,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:57,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 17:39:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:57,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:39:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:39:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:39:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:57,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:57,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:39:57,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:57,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 17:39:57,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:57,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:39:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:39:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:39:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:57,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:39:57,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 17:39:57,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:57,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:39:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:39:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 17:39:57,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770819339] [2020-10-14 17:39:57,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:57,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:39:57,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151906861] [2020-10-14 17:39:57,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:39:57,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:57,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:39:57,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:39:57,364 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-14 17:39:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:57,494 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-14 17:39:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:39:57,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-14 17:39:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:57,495 INFO L225 Difference]: With dead ends: 56 [2020-10-14 17:39:57,495 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 17:39:57,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:39:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 17:39:57,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 17:39:57,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 17:39:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 17:39:57,503 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-14 17:39:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:57,503 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 17:39:57,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:39:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 17:39:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 17:39:57,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:57,504 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:57,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:39:57,505 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:57,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash 916686915, now seen corresponding path program 4 times [2020-10-14 17:39:57,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:57,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069578463] [2020-10-14 17:39:57,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:02,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:40:02,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:40:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:40:02,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:02,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:40:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:40:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:40:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:02,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:02,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:02,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:02,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:02,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:40:02,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:02,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 17:40:02,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:02,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:40:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:40:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:02,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 17:40:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:02,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:02,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:40:02,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:40:02,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:02,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:02,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:40:02,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:02,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:40:02,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:02,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:40:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:02,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:40:02,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:40:02,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:02,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:40:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:40:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 17:40:02,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069578463] [2020-10-14 17:40:02,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:02,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:40:02,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87872359] [2020-10-14 17:40:02,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:40:02,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:02,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:40:02,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:40:02,693 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-14 17:40:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:02,868 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-14 17:40:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:40:02,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-14 17:40:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:02,870 INFO L225 Difference]: With dead ends: 60 [2020-10-14 17:40:02,870 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 17:40:02,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:40:02,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 17:40:02,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 17:40:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 17:40:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 17:40:02,881 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-14 17:40:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:02,882 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 17:40:02,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:40:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 17:40:02,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 17:40:02,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:02,885 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:02,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:40:02,885 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:02,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1264663007, now seen corresponding path program 5 times [2020-10-14 17:40:02,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:02,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392227452] [2020-10-14 17:40:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:02,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:07,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:07,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:40:07,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:40:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 17:40:07,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:07,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:40:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:40:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:40:07,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:07,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:07,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:07,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:07,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:07,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:07,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:07,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 17:40:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:07,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:07,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:40:07,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:07,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 17:40:07,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:07,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:07,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:40:07,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:07,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:40:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:07,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:40:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:08,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:08,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:08,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:08,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:40:08,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:08,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 17:40:08,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:08,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:40:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:40:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:08,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:40:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:08,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:08,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:08,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:40:08,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:08,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 17:40:08,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:08,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:40:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:40:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 17:40:08,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392227452] [2020-10-14 17:40:08,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:08,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:40:08,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106682173] [2020-10-14 17:40:08,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:40:08,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:08,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:40:08,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:40:08,061 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-14 17:40:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:08,251 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-14 17:40:08,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:40:08,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 17:40:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:08,253 INFO L225 Difference]: With dead ends: 64 [2020-10-14 17:40:08,253 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 17:40:08,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:40:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 17:40:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 17:40:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 17:40:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 17:40:08,259 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-14 17:40:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:08,260 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 17:40:08,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:40:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 17:40:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 17:40:08,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:08,261 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:08,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:40:08,262 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:08,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:08,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1251206527, now seen corresponding path program 6 times [2020-10-14 17:40:08,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:08,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662081486] [2020-10-14 17:40:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:13,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:40:13,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:40:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:40:13,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:13,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:40:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:40:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:40:13,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:13,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:13,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:13,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:13,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:13,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:13,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:40:13,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:13,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:40:13,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:13,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:40:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:40:13,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 17:40:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:13,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:40:13,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:13,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:40:13,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:13,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:40:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:40:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:13,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:40:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:40:13,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:40:13,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:13,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:40:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:40:13,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 17:40:13,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662081486] [2020-10-14 17:40:13,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:13,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:40:13,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196317932] [2020-10-14 17:40:13,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:40:13,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:13,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:40:13,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:40:13,469 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-14 17:40:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:13,648 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-14 17:40:13,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:40:13,649 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-14 17:40:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:13,650 INFO L225 Difference]: With dead ends: 68 [2020-10-14 17:40:13,650 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 17:40:13,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:40:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 17:40:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 17:40:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 17:40:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 17:40:13,656 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-14 17:40:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:13,656 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 17:40:13,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:40:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 17:40:13,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 17:40:13,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:13,658 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:13,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:40:13,658 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1668499037, now seen corresponding path program 7 times [2020-10-14 17:40:13,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:13,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082845514] [2020-10-14 17:40:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:15,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:18,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:18,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:40:18,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:40:18,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:40:18,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:18,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:40:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 17:40:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:40:18,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:18,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:18,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:18,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:18,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:18,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:18,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:18,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:18,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:18,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:18,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:18,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:18,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:40:18,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:18,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 17:40:18,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:18,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:40:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:40:18,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:40:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:18,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:18,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:18,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:40:18,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:18,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 17:40:18,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:18,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:40:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:40:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:40:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:18,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:18,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:18,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:40:18,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:18,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 17:40:18,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:18,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:18,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:40:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:40:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 17:40:18,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082845514] [2020-10-14 17:40:18,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:18,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:40:18,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451189024] [2020-10-14 17:40:18,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:40:18,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:18,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:40:18,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:40:18,908 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-14 17:40:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:19,108 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-14 17:40:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:40:19,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-14 17:40:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:19,111 INFO L225 Difference]: With dead ends: 72 [2020-10-14 17:40:19,111 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 17:40:19,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:40:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 17:40:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 17:40:19,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 17:40:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 17:40:19,123 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-14 17:40:19,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:19,124 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 17:40:19,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:40:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 17:40:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 17:40:19,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:19,127 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:19,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:40:19,128 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:19,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:19,128 INFO L82 PathProgramCache]: Analyzing trace with hash -691713861, now seen corresponding path program 8 times [2020-10-14 17:40:19,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:19,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006776069] [2020-10-14 17:40:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:19,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:24,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 17:40:24,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:40:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:40:24,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:24,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:40:24,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 17:40:24,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:40:24,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:24,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:24,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:24,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:24,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:24,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:24,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:24,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:40:24,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 17:40:24,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:24,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:40:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:40:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:24,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:40:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:24,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:40:24,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 17:40:24,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:24,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:40:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:40:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:24,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:40:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:24,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:40:24,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 17:40:24,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:24,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:40:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:40:24,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 17:40:24,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006776069] [2020-10-14 17:40:24,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:24,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:40:24,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793360034] [2020-10-14 17:40:24,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:40:24,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:24,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:40:24,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:40:24,372 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-14 17:40:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:24,609 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-14 17:40:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:40:24,609 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-14 17:40:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:24,610 INFO L225 Difference]: With dead ends: 76 [2020-10-14 17:40:24,610 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 17:40:24,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:40:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 17:40:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 17:40:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 17:40:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-14 17:40:24,617 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-14 17:40:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:24,617 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-14 17:40:24,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:40:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-14 17:40:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 17:40:24,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:24,619 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:24,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:40:24,619 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:24,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:24,620 INFO L82 PathProgramCache]: Analyzing trace with hash -559264615, now seen corresponding path program 9 times [2020-10-14 17:40:24,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:24,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969138897] [2020-10-14 17:40:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:29,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:29,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 17:40:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:40:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:40:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:29,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:40:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:40:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:40:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:29,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:29,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:29,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:29,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:29,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:29,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:29,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:29,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:40:29,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:29,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 17:40:29,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:29,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:29,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:40:29,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:29,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:40:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:40:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:29,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:29,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:29,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:40:29,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 17:40:29,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:29,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:40:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:40:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:40:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:29,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:29,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:40:29,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:29,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 17:40:29,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:29,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:40:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:40:29,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 17:40:29,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969138897] [2020-10-14 17:40:29,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:29,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:40:29,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441507622] [2020-10-14 17:40:29,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:40:29,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:29,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:40:29,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:40:29,869 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-14 17:40:30,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:30,156 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-14 17:40:30,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:40:30,157 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-14 17:40:30,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:30,157 INFO L225 Difference]: With dead ends: 80 [2020-10-14 17:40:30,158 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 17:40:30,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:40:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 17:40:30,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 17:40:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 17:40:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-14 17:40:30,167 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-14 17:40:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:30,168 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-14 17:40:30,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:40:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-14 17:40:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 17:40:30,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:30,170 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:30,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:40:30,170 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:30,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1915047433, now seen corresponding path program 10 times [2020-10-14 17:40:30,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:30,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943900494] [2020-10-14 17:40:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:30,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:30,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:30,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:34,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:35,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 17:40:35,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:40:35,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:40:35,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:35,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:40:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:40:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:40:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:35,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:35,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:35,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:35,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:35,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:35,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:40:35,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 17:40:35,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:35,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:40:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:40:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:40:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:35,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:40:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 17:40:35,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:35,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:40:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:40:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:35,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:40:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:35,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:40:35,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 17:40:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:35,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:40:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:40:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 17:40:35,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943900494] [2020-10-14 17:40:35,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:35,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:40:35,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704782717] [2020-10-14 17:40:35,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:40:35,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:35,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:40:35,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:40:35,406 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-14 17:40:35,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:35,683 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-14 17:40:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:40:35,684 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-14 17:40:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:35,685 INFO L225 Difference]: With dead ends: 84 [2020-10-14 17:40:35,685 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 17:40:35,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:40:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 17:40:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 17:40:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 17:40:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 17:40:35,692 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-14 17:40:35,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:35,692 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 17:40:35,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:40:35,693 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 17:40:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 17:40:35,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:35,693 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:35,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:40:35,694 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:35,694 INFO L82 PathProgramCache]: Analyzing trace with hash -978921259, now seen corresponding path program 11 times [2020-10-14 17:40:35,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:35,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37012290] [2020-10-14 17:40:35,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:35,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:35,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:40,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 17:40:40,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:40:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:40:40,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:40,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:40:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:40:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:40:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:40,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:40,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:40,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:40,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:40,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:40,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:40,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:40,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:40,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:40,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:40,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:40,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:40,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:40:40,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 17:40:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:40,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:40:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:40:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:40:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:40,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:40,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:40,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:40:40,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:40,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 17:40:40,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:40,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:40:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:40:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:40,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:40:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:40,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:40,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:40,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:40:40,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 17:40:40,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:40,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:40:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:40:40,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 17:40:40,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37012290] [2020-10-14 17:40:40,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:40,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:40:40,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551249577] [2020-10-14 17:40:40,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:40:40,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:40,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:40:40,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:40:40,985 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-14 17:40:41,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:41,316 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-14 17:40:41,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:40:41,316 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-14 17:40:41,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:41,317 INFO L225 Difference]: With dead ends: 88 [2020-10-14 17:40:41,317 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 17:40:41,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:40:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 17:40:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 17:40:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 17:40:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 17:40:41,324 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-14 17:40:41,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:41,325 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 17:40:41,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:40:41,325 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 17:40:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 17:40:41,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:41,326 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:41,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:40:41,326 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:41,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:41,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1409867469, now seen corresponding path program 12 times [2020-10-14 17:40:41,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:41,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224951282] [2020-10-14 17:40:41,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:41,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:41,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:46,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:46,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 17:40:46,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:40:46,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:40:46,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:46,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:40:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:40:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:40:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:46,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:46,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:46,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:46,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:46,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:46,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:46,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:46,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:46,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:46,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:46,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:46,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:46,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:40:46,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:46,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 17:40:46,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:46,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:40:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:40:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:46,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 17:40:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:46,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:46,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:46,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:40:46,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 17:40:46,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:46,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:40:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:40:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:46,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:40:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:46,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:40:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 17:40:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:46,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:40:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:40:46,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 17:40:46,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224951282] [2020-10-14 17:40:46,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:46,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:40:46,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976825924] [2020-10-14 17:40:46,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:40:46,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:46,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:40:46,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:40:46,700 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-14 17:40:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:47,077 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-14 17:40:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:40:47,077 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-14 17:40:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:47,078 INFO L225 Difference]: With dead ends: 92 [2020-10-14 17:40:47,079 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 17:40:47,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:40:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 17:40:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 17:40:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:40:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 17:40:47,100 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-14 17:40:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:47,101 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 17:40:47,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:40:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 17:40:47,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 17:40:47,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:47,105 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:47,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:40:47,110 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:47,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1588860143, now seen corresponding path program 13 times [2020-10-14 17:40:47,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:47,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346027701] [2020-10-14 17:40:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:47,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:47,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:52,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:52,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 17:40:52,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:40:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:40:52,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:52,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:40:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 17:40:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:40:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:52,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:52,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:52,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:52,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:52,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:52,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:52,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:52,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:40:52,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 17:40:52,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:52,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:40:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:40:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:52,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:40:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:52,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:52,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:40:52,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:52,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 17:40:52,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:52,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:52,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:40:52,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:52,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:40:52,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:40:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:52,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:52,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:40:52,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 17:40:52,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:52,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:40:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:40:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 17:40:52,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346027701] [2020-10-14 17:40:52,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:52,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:40:52,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301264734] [2020-10-14 17:40:52,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:40:52,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:52,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:40:52,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:40:52,692 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-14 17:40:53,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:53,054 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-14 17:40:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:40:53,055 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-14 17:40:53,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:53,056 INFO L225 Difference]: With dead ends: 96 [2020-10-14 17:40:53,056 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 17:40:53,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:40:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 17:40:53,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 17:40:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 17:40:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 17:40:53,065 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-14 17:40:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:53,065 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 17:40:53,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:40:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 17:40:53,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 17:40:53,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:53,067 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:53,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:40:53,067 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:53,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:53,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1229089169, now seen corresponding path program 14 times [2020-10-14 17:40:53,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:53,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160423051] [2020-10-14 17:40:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:57,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:58,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:58,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 17:40:58,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:40:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:40:58,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:58,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:40:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 17:40:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:40:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:58,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:58,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:58,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:58,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:58,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:58,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:58,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:40:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:58,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:58,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:40:58,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 17:40:58,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:58,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:40:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:40:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:58,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:40:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:58,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:58,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:40:58,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:58,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 17:40:58,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:58,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:40:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:58,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:40:58,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:40:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:58,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:58,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:40:58,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 17:40:58,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:58,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:40:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:40:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:40:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 17:40:58,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160423051] [2020-10-14 17:40:58,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:58,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:40:58,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191992636] [2020-10-14 17:40:58,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:40:58,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:58,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:40:58,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:40:58,669 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-14 17:40:59,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:59,059 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-14 17:40:59,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:40:59,063 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-14 17:40:59,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:59,065 INFO L225 Difference]: With dead ends: 100 [2020-10-14 17:40:59,065 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 17:40:59,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:40:59,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 17:40:59,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 17:40:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 17:40:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-14 17:40:59,077 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-14 17:40:59,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:59,077 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-14 17:40:59,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:40:59,080 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-14 17:40:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 17:40:59,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:59,082 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:59,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:40:59,082 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:59,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:59,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1543732403, now seen corresponding path program 15 times [2020-10-14 17:40:59,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:59,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395333533] [2020-10-14 17:40:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:59,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:04,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:04,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 17:41:04,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:41:04,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:04,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:41:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 17:41:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:41:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:04,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:04,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:04,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:04,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:04,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:41:04,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:04,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:04,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:04,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:04,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:04,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:41:04,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 17:41:04,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:04,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:41:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:41:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:04,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:41:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:04,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:04,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:41:04,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 17:41:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:04,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:41:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:41:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:41:04,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:41:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:04,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:04,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:41:04,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:04,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 17:41:04,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:04,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:41:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:41:04,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 17:41:04,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395333533] [2020-10-14 17:41:04,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:41:04,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:41:04,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533773318] [2020-10-14 17:41:04,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:41:04,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:41:04,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:41:04,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:41:04,622 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-14 17:41:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:04,996 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-14 17:41:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:41:04,997 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-14 17:41:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:04,998 INFO L225 Difference]: With dead ends: 104 [2020-10-14 17:41:04,998 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 17:41:05,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:41:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 17:41:05,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 17:41:05,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 17:41:05,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-14 17:41:05,011 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-14 17:41:05,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:05,011 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-14 17:41:05,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:41:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-14 17:41:05,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 17:41:05,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:05,013 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:05,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:41:05,014 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:05,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1028723115, now seen corresponding path program 16 times [2020-10-14 17:41:05,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:05,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298966403] [2020-10-14 17:41:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:05,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:10,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 17:41:10,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:41:10,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:10,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:41:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 17:41:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:41:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:10,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:10,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:10,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:10,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:10,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:41:10,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:10,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:10,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:10,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:10,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:41:10,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 17:41:10,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:10,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:41:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:41:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 17:41:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:10,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:41:10,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:10,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 17:41:10,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:10,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:41:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:41:10,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:41:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:10,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:41:10,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 17:41:10,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:10,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:41:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:41:10,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 17:41:10,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298966403] [2020-10-14 17:41:10,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:41:10,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:41:10,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317319523] [2020-10-14 17:41:10,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:41:10,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:41:10,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:41:10,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:41:10,435 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-14 17:41:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:10,898 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-14 17:41:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:41:10,899 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-14 17:41:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:10,900 INFO L225 Difference]: With dead ends: 108 [2020-10-14 17:41:10,900 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 17:41:10,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:41:10,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 17:41:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 17:41:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 17:41:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-14 17:41:10,907 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-14 17:41:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:10,907 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-14 17:41:10,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:41:10,908 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-14 17:41:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 17:41:10,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:10,909 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:10,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:41:10,909 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:10,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1771807113, now seen corresponding path program 17 times [2020-10-14 17:41:10,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:10,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925483368] [2020-10-14 17:41:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:15,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:15,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 17:41:15,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 17:41:15,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:15,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:41:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:41:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:41:15,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:15,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:15,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:15,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:15,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:41:15,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:15,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:15,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:15,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:15,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:15,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:15,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:15,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:15,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:41:15,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:15,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 17:41:15,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:15,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:41:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:41:15,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:16,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 17:41:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:16,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:16,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:41:16,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 17:41:16,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:16,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:41:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:41:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:16,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:41:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:16,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:16,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:41:16,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 17:41:16,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:16,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:16,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:41:16,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:16,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:41:16,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 17:41:16,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925483368] [2020-10-14 17:41:16,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:41:16,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:41:16,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34068528] [2020-10-14 17:41:16,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:41:16,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:41:16,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:41:16,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:41:16,419 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-14 17:41:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:16,898 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-14 17:41:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:41:16,902 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-14 17:41:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:16,903 INFO L225 Difference]: With dead ends: 112 [2020-10-14 17:41:16,903 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 17:41:16,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:41:16,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 17:41:16,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 17:41:16,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 17:41:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 17:41:16,910 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-14 17:41:16,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:16,910 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 17:41:16,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:41:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 17:41:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 17:41:16,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:16,915 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:16,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:41:16,915 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:16,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1739287833, now seen corresponding path program 18 times [2020-10-14 17:41:16,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:16,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370896670] [2020-10-14 17:41:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:16,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:16,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:21,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:21,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 17:41:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:41:21,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:21,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:41:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:41:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:41:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:21,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:21,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:21,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:21,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:41:21,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:21,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:21,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:21,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:21,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:41:21,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 17:41:21,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:21,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:41:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:41:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:22,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:41:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:22,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:22,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:41:22,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:22,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 17:41:22,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:22,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:22,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:41:22,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:41:22,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:41:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:22,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:22,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:22,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:41:22,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:22,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 17:41:22,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:22,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:22,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:41:22,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:22,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:41:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 17:41:22,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370896670] [2020-10-14 17:41:22,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:41:22,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:41:22,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526953355] [2020-10-14 17:41:22,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:41:22,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:41:22,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:41:22,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:41:22,421 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-14 17:41:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:22,951 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-14 17:41:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:41:22,952 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-14 17:41:22,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:22,953 INFO L225 Difference]: With dead ends: 116 [2020-10-14 17:41:22,953 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 17:41:22,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:41:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 17:41:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 17:41:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 17:41:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-14 17:41:22,960 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-14 17:41:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:22,960 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-14 17:41:22,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:41:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-14 17:41:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 17:41:22,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:22,964 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:22,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:41:22,964 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:22,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1215543867, now seen corresponding path program 19 times [2020-10-14 17:41:22,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:22,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564682839] [2020-10-14 17:41:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:27,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:27,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 17:41:27,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:41:27,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:27,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:41:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 17:41:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:41:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:27,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:27,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:27,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:27,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:27,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:41:27,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:27,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:27,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:28,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:28,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:41:28,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 17:41:28,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:28,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:41:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:41:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:28,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:41:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:28,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:28,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:28,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:41:28,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 17:41:28,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:28,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:41:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:41:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:41:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:28,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:28,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:28,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:41:28,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 17:41:28,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:28,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:41:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:41:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-14 17:41:28,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564682839] [2020-10-14 17:41:28,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:41:28,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:41:28,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816580969] [2020-10-14 17:41:28,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:41:28,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:41:28,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:41:28,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:41:28,539 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-14 17:41:29,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:29,102 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-14 17:41:29,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:41:29,103 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-14 17:41:29,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:29,104 INFO L225 Difference]: With dead ends: 120 [2020-10-14 17:41:29,104 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:41:29,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:41:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:41:29,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 17:41:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 17:41:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 17:41:29,114 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-14 17:41:29,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:29,114 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 17:41:29,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:41:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 17:41:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 17:41:29,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:29,117 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:29,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:41:29,118 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:29,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1444210141, now seen corresponding path program 20 times [2020-10-14 17:41:29,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:29,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400630573] [2020-10-14 17:41:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:34,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:34,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 17:41:34,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:34,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:41:34,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:34,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:41:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:41:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:41:34,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:34,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:34,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:34,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:34,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:34,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:41:34,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:34,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:34,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:34,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:34,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:41:34,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:34,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 17:41:34,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:34,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:41:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:41:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:34,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 17:41:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:34,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:41:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 17:41:34,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:34,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:41:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:41:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 17:41:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:34,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:34,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:41:34,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 17:41:34,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:34,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:41:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:41:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:34,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 17:41:34,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400630573] [2020-10-14 17:41:34,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:41:34,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:41:34,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904673859] [2020-10-14 17:41:34,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:41:34,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:41:34,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:41:34,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:41:34,745 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-14 17:41:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:35,368 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-14 17:41:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:41:35,371 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-14 17:41:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:35,371 INFO L225 Difference]: With dead ends: 124 [2020-10-14 17:41:35,372 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 17:41:35,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 17:41:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 17:41:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 17:41:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 17:41:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-14 17:41:35,378 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-14 17:41:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:35,378 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-14 17:41:35,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:41:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-14 17:41:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 17:41:35,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:35,382 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:35,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:41:35,383 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:35,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:35,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1018261505, now seen corresponding path program 21 times [2020-10-14 17:41:35,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:35,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078393595] [2020-10-14 17:41:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:35,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:35,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:40,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:40,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 17:41:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:41:40,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:40,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:41:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:41:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:41:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:40,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:40,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:40,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:40,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:40,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:41:40,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:40,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:40,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:40,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:40,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:40,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:41:40,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 17:41:40,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:40,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:41:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:41:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:40,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 17:41:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:40,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:40,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:40,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:41:40,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 17:41:40,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:40,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:41:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:41:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:40,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 17:41:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:40,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:41,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:41,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:41:41,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 17:41:41,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:41,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:41:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:41:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-14 17:41:41,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078393595] [2020-10-14 17:41:41,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:41:41,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:41:41,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389775331] [2020-10-14 17:41:41,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:41:41,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:41:41,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:41:41,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:41:41,073 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-14 17:41:41,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:41,722 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-14 17:41:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:41:41,722 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-14 17:41:41,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:41,724 INFO L225 Difference]: With dead ends: 128 [2020-10-14 17:41:41,724 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 17:41:41,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:41:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 17:41:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 17:41:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 17:41:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 17:41:41,730 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-14 17:41:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:41,731 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 17:41:41,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:41:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 17:41:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 17:41:41,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:41,732 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:41,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:41:41,733 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:41,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:41,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1648908449, now seen corresponding path program 22 times [2020-10-14 17:41:41,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:41,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146186458] [2020-10-14 17:41:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:41,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:46,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:46,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 17:41:46,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:46,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:41:46,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:46,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:41:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 17:41:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:41:46,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:46,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:46,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:46,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:46,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:46,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:41:46,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:46,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:46,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:46,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:46,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:46,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:41:46,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:46,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:46,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:46,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:41:46,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:46,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 17:41:46,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:46,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:46,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:41:46,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:46,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:41:46,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:47,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:41:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:47,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:41:47,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 17:41:47,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:47,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:41:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:41:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:47,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 17:41:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:47,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:47,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:47,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:41:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 17:41:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:47,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:41:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:41:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-14 17:41:47,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146186458] [2020-10-14 17:41:47,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:41:47,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:41:47,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833610228] [2020-10-14 17:41:47,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:41:47,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:41:47,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:41:47,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:41:47,414 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-14 17:41:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:48,119 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-14 17:41:48,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:41:48,119 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-14 17:41:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:48,120 INFO L225 Difference]: With dead ends: 132 [2020-10-14 17:41:48,121 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 17:41:48,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 17:41:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 17:41:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 17:41:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 17:41:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-14 17:41:48,126 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-14 17:41:48,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:48,127 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-14 17:41:48,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:41:48,127 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-14 17:41:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 17:41:48,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:48,128 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:48,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:41:48,129 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:48,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1366171709, now seen corresponding path program 23 times [2020-10-14 17:41:48,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:48,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492195701] [2020-10-14 17:41:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:48,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:53,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 17:41:53,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:41:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:53,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:41:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:41:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:41:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:53,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:53,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:53,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:41:53,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:53,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:53,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:53,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:41:53,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 17:41:53,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:53,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:41:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:41:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:41:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:53,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:53,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:41:53,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:53,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 17:41:53,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:53,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:41:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:41:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:53,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 17:41:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:53,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:53,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:53,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:41:53,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:41:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 17:41:53,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:53,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:41:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:41:53,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:41:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-14 17:41:54,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492195701] [2020-10-14 17:41:54,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:41:54,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:41:54,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929503952] [2020-10-14 17:41:54,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:41:54,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:41:54,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:41:54,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:41:54,007 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-14 17:41:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:54,711 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-14 17:41:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:41:54,712 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-14 17:41:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:54,713 INFO L225 Difference]: With dead ends: 136 [2020-10-14 17:41:54,713 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 17:41:54,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:41:54,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 17:41:54,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 17:41:54,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 17:41:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 17:41:54,720 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-14 17:41:54,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:54,721 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 17:41:54,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:41:54,721 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 17:41:54,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 17:41:54,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:54,722 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:54,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:41:54,723 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:54,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:54,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1461896549, now seen corresponding path program 24 times [2020-10-14 17:41:54,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:54,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549995964] [2020-10-14 17:41:54,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:59,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:59,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 17:41:59,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:41:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:41:59,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:59,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:41:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:41:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:41:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:41:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:59,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:59,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:41:59,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:41:59,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:59,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:41:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:41:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:41:59,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:41:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:41:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:59,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:59,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:41:59,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:41:59,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:41:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 17:41:59,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:41:59,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:41:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:41:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:41:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:41:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:00,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 17:42:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:00,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:00,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:00,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:42:00,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:00,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 17:42:00,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:00,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:42:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:42:00,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:00,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 17:42:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:00,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:00,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:42:00,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 17:42:00,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:00,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:42:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:42:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 17:42:00,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549995964] [2020-10-14 17:42:00,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:00,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:42:00,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349275592] [2020-10-14 17:42:00,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:42:00,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:00,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:42:00,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:42:00,503 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-14 17:42:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:01,271 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-14 17:42:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:42:01,271 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-14 17:42:01,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:01,272 INFO L225 Difference]: With dead ends: 140 [2020-10-14 17:42:01,272 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 17:42:01,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 17:42:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 17:42:01,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 17:42:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 17:42:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-14 17:42:01,280 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-14 17:42:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:01,280 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-14 17:42:01,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:42:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-14 17:42:01,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 17:42:01,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:01,282 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:01,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:42:01,282 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:01,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1213901191, now seen corresponding path program 25 times [2020-10-14 17:42:01,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:01,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711682284] [2020-10-14 17:42:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:06,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:06,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 17:42:06,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:06,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:42:06,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:06,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:42:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 17:42:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:42:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:06,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:06,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:06,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:06,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:42:06,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:06,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:06,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:06,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:42:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:06,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:06,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:42:06,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 17:42:06,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:06,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:42:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:42:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:06,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 17:42:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:06,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:06,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:06,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:42:06,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 17:42:06,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:06,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:42:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:42:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 17:42:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:06,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:07,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:07,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:42:07,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:07,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 17:42:07,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:07,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:42:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:42:07,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 17:42:07,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711682284] [2020-10-14 17:42:07,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:07,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:42:07,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269661421] [2020-10-14 17:42:07,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:42:07,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:07,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:42:07,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:42:07,068 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-14 17:42:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:07,890 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-14 17:42:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:42:07,891 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-14 17:42:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:07,892 INFO L225 Difference]: With dead ends: 144 [2020-10-14 17:42:07,892 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 17:42:07,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:42:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 17:42:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 17:42:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 17:42:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 17:42:07,899 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-14 17:42:07,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:07,900 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 17:42:07,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:42:07,900 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 17:42:07,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 17:42:07,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:07,901 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:07,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:42:07,902 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:07,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:07,902 INFO L82 PathProgramCache]: Analyzing trace with hash -906046505, now seen corresponding path program 26 times [2020-10-14 17:42:07,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:07,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293008430] [2020-10-14 17:42:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:07,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:07,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:12,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:12,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 17:42:12,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:12,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:42:12,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:12,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:42:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 17:42:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:42:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:12,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:12,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:12,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:12,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:42:12,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:12,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:12,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:12,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:42:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:12,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:13,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:13,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:42:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 17:42:13,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:13,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:42:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:42:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:42:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:13,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:13,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:42:13,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 17:42:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:13,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:42:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:42:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:13,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 17:42:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:13,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:13,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:13,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:13,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:42:13,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 17:42:13,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:13,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:42:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:42:13,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-14 17:42:13,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293008430] [2020-10-14 17:42:13,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:13,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:42:13,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329003222] [2020-10-14 17:42:13,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:42:13,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:13,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:42:13,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:42:13,745 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-14 17:42:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:14,588 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-14 17:42:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:42:14,589 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-14 17:42:14,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:14,590 INFO L225 Difference]: With dead ends: 148 [2020-10-14 17:42:14,590 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 17:42:14,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 17:42:14,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 17:42:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 17:42:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 17:42:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 17:42:14,604 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-14 17:42:14,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:14,604 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 17:42:14,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:42:14,604 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 17:42:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 17:42:14,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:14,606 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:14,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:42:14,606 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:14,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:14,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1522143925, now seen corresponding path program 27 times [2020-10-14 17:42:14,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:14,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787300265] [2020-10-14 17:42:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:14,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:14,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:14,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:19,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:19,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 17:42:19,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:42:19,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:19,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:42:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 17:42:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:42:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:19,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:19,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:19,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:42:19,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:19,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:42:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:19,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:19,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:42:19,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:19,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 17:42:19,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:19,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:19,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:42:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:42:19,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:42:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:20,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:20,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:42:20,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:20,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 17:42:20,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:20,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:42:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:42:20,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:20,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 17:42:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:20,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:20,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:20,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:42:20,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 17:42:20,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:20,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:20,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:42:20,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:20,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:42:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-14 17:42:20,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787300265] [2020-10-14 17:42:20,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:20,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 17:42:20,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812433994] [2020-10-14 17:42:20,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 17:42:20,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:20,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 17:42:20,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:42:20,538 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-14 17:42:21,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:21,483 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-14 17:42:21,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:42:21,484 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-14 17:42:21,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:21,485 INFO L225 Difference]: With dead ends: 152 [2020-10-14 17:42:21,485 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 17:42:21,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 17:42:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 17:42:21,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 17:42:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 17:42:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-14 17:42:21,492 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-14 17:42:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:21,493 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-14 17:42:21,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 17:42:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-14 17:42:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 17:42:21,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:21,494 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:21,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:42:21,495 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:21,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1992330477, now seen corresponding path program 28 times [2020-10-14 17:42:21,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:21,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832155600] [2020-10-14 17:42:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:21,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:21,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:26,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:26,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 17:42:26,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:42:26,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:26,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:42:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 17:42:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:42:26,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:26,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:26,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:26,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:26,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:42:26,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:26,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:42:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:26,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:26,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:42:26,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:26,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 17:42:26,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:26,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:42:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:42:26,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:27,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 17:42:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:27,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:27,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:42:27,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 17:42:27,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:27,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:42:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:42:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:27,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 17:42:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:27,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:27,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:42:27,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 17:42:27,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:27,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:42:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:42:27,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-14 17:42:27,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832155600] [2020-10-14 17:42:27,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:27,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:42:27,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253562725] [2020-10-14 17:42:27,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:42:27,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:27,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:42:27,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:42:27,491 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-14 17:42:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:28,470 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-14 17:42:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:42:28,471 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-14 17:42:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:28,472 INFO L225 Difference]: With dead ends: 156 [2020-10-14 17:42:28,472 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 17:42:28,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 17:42:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 17:42:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 17:42:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 17:42:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-14 17:42:28,481 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-14 17:42:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:28,482 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-14 17:42:28,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:42:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-14 17:42:28,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 17:42:28,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:28,484 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:28,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:42:28,484 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:28,484 INFO L82 PathProgramCache]: Analyzing trace with hash 261051633, now seen corresponding path program 29 times [2020-10-14 17:42:28,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:28,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122506133] [2020-10-14 17:42:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:28,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:28,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:33,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:33,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 17:42:33,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:42:33,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:33,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:42:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:42:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:42:33,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:33,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:33,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:33,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:33,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:42:33,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:33,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:42:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:33,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:42:33,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:33,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 17:42:33,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:33,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:42:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:42:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:34,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 17:42:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:34,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:34,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:34,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:42:34,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:34,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 17:42:34,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:34,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:42:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:42:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:34,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 17:42:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:34,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:34,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:42:34,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 17:42:34,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:34,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:42:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:42:34,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-14 17:42:34,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122506133] [2020-10-14 17:42:34,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:34,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 17:42:34,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523881527] [2020-10-14 17:42:34,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 17:42:34,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:34,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 17:42:34,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:42:34,547 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-14 17:42:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:35,561 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-14 17:42:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 17:42:35,561 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-14 17:42:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:35,563 INFO L225 Difference]: With dead ends: 160 [2020-10-14 17:42:35,563 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 17:42:35,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 17:42:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 17:42:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 17:42:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 17:42:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-14 17:42:35,569 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-14 17:42:35,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:35,569 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-14 17:42:35,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 17:42:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-14 17:42:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 17:42:35,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:35,571 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:35,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:42:35,571 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:35,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1203627953, now seen corresponding path program 30 times [2020-10-14 17:42:35,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:35,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055828343] [2020-10-14 17:42:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:35,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:35,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:35,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:40,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:40,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 17:42:40,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:42:40,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:40,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:42:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 17:42:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:42:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:40,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:40,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:40,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:42:40,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:40,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:42:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:40,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:40,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:40,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:42:40,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 17:42:40,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:40,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:42:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:42:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:42:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:41,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:41,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:41,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:42:41,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:41,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 17:42:41,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:41,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:42:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:42:41,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:41,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 17:42:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:42:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 17:42:41,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:41,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:42:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:42:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-14 17:42:41,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055828343] [2020-10-14 17:42:41,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:41,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 17:42:41,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256792257] [2020-10-14 17:42:41,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 17:42:41,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:41,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 17:42:41,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:42:41,660 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-14 17:42:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:42,719 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-14 17:42:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:42:42,720 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-14 17:42:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:42,722 INFO L225 Difference]: With dead ends: 164 [2020-10-14 17:42:42,722 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 17:42:42,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 17:42:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 17:42:42,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 17:42:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 17:42:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-14 17:42:42,729 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-14 17:42:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:42,729 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-14 17:42:42,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 17:42:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-14 17:42:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 17:42:42,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:42,730 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:42,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:42:42,730 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:42,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:42,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1418206509, now seen corresponding path program 31 times [2020-10-14 17:42:42,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:42,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597778602] [2020-10-14 17:42:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:42,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:47,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:47,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 17:42:47,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:47,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:42:47,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:47,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:42:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 17:42:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:42:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:47,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:47,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:47,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:47,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:47,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:47,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:42:47,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:47,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:47,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:47,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:42:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:47,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:47,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:47,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:42:47,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:47,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 17:42:47,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:47,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:42:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:42:47,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 17:42:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:48,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:48,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:42:48,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 17:42:48,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:48,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:42:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:42:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 17:42:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:48,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:48,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:42:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 17:42:48,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:48,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:42:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:42:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-14 17:42:48,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597778602] [2020-10-14 17:42:48,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:48,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 17:42:48,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728623193] [2020-10-14 17:42:48,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 17:42:48,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:48,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 17:42:48,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:42:48,860 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-14 17:42:49,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:49,925 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-14 17:42:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 17:42:49,926 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-14 17:42:49,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:49,927 INFO L225 Difference]: With dead ends: 168 [2020-10-14 17:42:49,927 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 17:42:49,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 17:42:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 17:42:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 17:42:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 17:42:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-14 17:42:49,933 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-14 17:42:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:49,934 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-14 17:42:49,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 17:42:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-14 17:42:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 17:42:49,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:49,935 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:49,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:42:49,936 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:49,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:49,936 INFO L82 PathProgramCache]: Analyzing trace with hash 841597835, now seen corresponding path program 32 times [2020-10-14 17:42:49,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:49,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781738072] [2020-10-14 17:42:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:54,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:54,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 17:42:54,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:54,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:42:54,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:54,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:42:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:42:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:42:54,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:54,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:54,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:54,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:42:54,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:54,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:54,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:42:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:55,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:55,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:42:55,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:55,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 17:42:55,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:55,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:55,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:42:55,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:55,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:42:55,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:55,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 17:42:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:55,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:55,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:42:55,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 17:42:55,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:55,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:42:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:42:55,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 17:42:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:56,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:56,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:42:56,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 17:42:56,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:56,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:42:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:56,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:42:56,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:42:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-14 17:42:56,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781738072] [2020-10-14 17:42:56,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:56,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 17:42:56,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656541556] [2020-10-14 17:42:56,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 17:42:56,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:56,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 17:42:56,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:42:56,159 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-14 17:42:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:57,303 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-14 17:42:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:42:57,304 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-14 17:42:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:57,305 INFO L225 Difference]: With dead ends: 172 [2020-10-14 17:42:57,305 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 17:42:57,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 17:42:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 17:42:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 17:42:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 17:42:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-14 17:42:57,315 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-14 17:42:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:57,316 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-14 17:42:57,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 17:42:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-14 17:42:57,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 17:42:57,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:57,317 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:57,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:42:57,317 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:57,317 INFO L82 PathProgramCache]: Analyzing trace with hash 294087529, now seen corresponding path program 33 times [2020-10-14 17:42:57,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:57,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936764833] [2020-10-14 17:42:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:57,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:02,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:02,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 17:43:02,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:43:02,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:43:02,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:02,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:43:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 17:43:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:43:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:02,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:43:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:02,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:02,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:02,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:43:02,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:02,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:43:02,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:02,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:43:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:43:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:43:02,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:02,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:43:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:02,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:02,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:02,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:43:02,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 17:43:02,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:02,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:43:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:43:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:03,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 17:43:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:03,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:03,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:43:03,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:03,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 17:43:03,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:03,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:03,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:43:03,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:03,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:43:03,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 17:43:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:03,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:03,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:43:03,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 17:43:03,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:03,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:43:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:43:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-14 17:43:03,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936764833] [2020-10-14 17:43:03,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:43:03,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 17:43:03,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346471580] [2020-10-14 17:43:03,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 17:43:03,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:43:03,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 17:43:03,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:43:03,601 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-14 17:43:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:43:04,830 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-14 17:43:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 17:43:04,831 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-14 17:43:04,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:43:04,832 INFO L225 Difference]: With dead ends: 176 [2020-10-14 17:43:04,833 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 17:43:04,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 17:43:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 17:43:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 17:43:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 17:43:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-14 17:43:04,839 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-14 17:43:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:43:04,840 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-14 17:43:04,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 17:43:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-14 17:43:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 17:43:04,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:04,841 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:43:04,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 17:43:04,841 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:04,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1684441913, now seen corresponding path program 34 times [2020-10-14 17:43:04,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:04,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250832285] [2020-10-14 17:43:04,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:09,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:09,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 17:43:09,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:43:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:43:09,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:09,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:43:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 17:43:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:43:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:09,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:43:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:09,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:43:09,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:43:09,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:09,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:43:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:43:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:43:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:43:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:09,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:10,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:10,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:43:10,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 17:43:10,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:10,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:43:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:43:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 17:43:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:10,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:10,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:10,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:43:10,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 17:43:10,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:10,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:43:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:43:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:11,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 17:43:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:11,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:11,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:11,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:43:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 17:43:11,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:11,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:43:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:43:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-14 17:43:11,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250832285] [2020-10-14 17:43:11,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:43:11,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 17:43:11,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874971440] [2020-10-14 17:43:11,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 17:43:11,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:43:11,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 17:43:11,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:43:11,247 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-14 17:43:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:43:12,533 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-14 17:43:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:43:12,533 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-14 17:43:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:43:12,535 INFO L225 Difference]: With dead ends: 180 [2020-10-14 17:43:12,535 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 17:43:12,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 17:43:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 17:43:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 17:43:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 17:43:12,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-14 17:43:12,542 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-14 17:43:12,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:43:12,542 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-14 17:43:12,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 17:43:12,542 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-14 17:43:12,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 17:43:12,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:12,543 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:43:12,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 17:43:12,544 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:12,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:12,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1475362725, now seen corresponding path program 35 times [2020-10-14 17:43:12,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:12,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818547617] [2020-10-14 17:43:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:12,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:17,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:17,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 17:43:17,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:43:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:43:17,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:17,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:43:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 17:43:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:43:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:17,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:43:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:17,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:17,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:43:17,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:17,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:43:17,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:17,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:43:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:43:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:43:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:17,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:43:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:17,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:17,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:17,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:43:17,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:17,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 17:43:17,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:17,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:17,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:43:17,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:17,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:43:17,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 17:43:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:18,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:18,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:18,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:43:18,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 17:43:18,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:18,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:43:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:43:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-14 17:43:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:18,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:18,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:43:18,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:18,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 17:43:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:18,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:43:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:43:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-14 17:43:18,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818547617] [2020-10-14 17:43:18,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:43:18,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 17:43:18,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295001834] [2020-10-14 17:43:18,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 17:43:18,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:43:18,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 17:43:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:43:18,960 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states. [2020-10-14 17:43:20,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:43:20,332 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2020-10-14 17:43:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:43:20,333 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 242 [2020-10-14 17:43:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:43:20,334 INFO L225 Difference]: With dead ends: 184 [2020-10-14 17:43:20,334 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 17:43:20,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 17:43:20,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 17:43:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 17:43:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 17:43:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 17:43:20,342 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 242 [2020-10-14 17:43:20,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:43:20,343 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 17:43:20,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 17:43:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 17:43:20,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 17:43:20,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:20,345 INFO L422 BasicCegarLoop]: trace histogram [108, 108, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:43:20,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 17:43:20,345 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:20,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:20,345 INFO L82 PathProgramCache]: Analyzing trace with hash 582233091, now seen corresponding path program 36 times [2020-10-14 17:43:20,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:20,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840081736] [2020-10-14 17:43:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:20,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:20,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:20,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:25,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:25,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 17:43:25,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:43:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:43:25,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:25,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:43:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:43:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:43:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:25,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:43:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:25,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:25,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:25,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:43:25,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:25,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:43:25,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:25,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:43:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:43:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:43:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:25,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:43:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:25,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:25,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:25,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:43:25,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 17:43:25,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:25,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:43:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:43:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:26,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 17:43:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:26,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:26,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:43:26,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 17:43:26,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:26,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:43:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:43:26,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 17:43:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:26,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:26,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:43:26,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 17:43:26,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:26,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:43:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:43:26,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 3888 proven. 7776 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-14 17:43:26,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840081736] [2020-10-14 17:43:26,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:43:26,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 17:43:26,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460609384] [2020-10-14 17:43:26,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 17:43:26,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:43:26,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 17:43:26,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:43:26,831 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 40 states. [2020-10-14 17:43:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:43:28,293 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-10-14 17:43:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 17:43:28,294 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 248 [2020-10-14 17:43:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:43:28,296 INFO L225 Difference]: With dead ends: 188 [2020-10-14 17:43:28,296 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 17:43:28,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 17:43:28,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 17:43:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-14 17:43:28,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 17:43:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-14 17:43:28,304 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 248 [2020-10-14 17:43:28,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:43:28,304 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-14 17:43:28,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 17:43:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-14 17:43:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 17:43:28,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:28,305 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:43:28,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 17:43:28,306 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:28,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:28,306 INFO L82 PathProgramCache]: Analyzing trace with hash 581278177, now seen corresponding path program 37 times [2020-10-14 17:43:28,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:28,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890447979] [2020-10-14 17:43:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:28,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:33,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:33,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 17:43:33,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:43:33,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:43:33,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:33,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:33,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:43:33,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:43:33,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:43:33,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:33,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:43:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:33,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:33,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:33,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:43:33,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:43:33,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:33,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:43:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:43:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:43:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:33,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:43:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:33,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:33,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:43:33,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:33,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 17:43:33,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:33,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:33,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:43:33,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:33,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:43:33,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 17:43:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:34,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:34,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:34,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:43:34,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:34,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 17:43:34,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:34,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:43:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:43:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 17:43:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:34,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:34,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:43:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 17:43:34,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:34,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:43:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:43:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 4107 proven. 8214 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-14 17:43:34,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890447979] [2020-10-14 17:43:34,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:43:34,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 17:43:34,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893077323] [2020-10-14 17:43:34,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 17:43:34,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:43:34,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 17:43:34,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:43:34,908 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 41 states. [2020-10-14 17:43:36,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:43:36,461 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2020-10-14 17:43:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 17:43:36,462 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 254 [2020-10-14 17:43:36,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:43:36,463 INFO L225 Difference]: With dead ends: 192 [2020-10-14 17:43:36,463 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 17:43:36,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 17:43:36,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 17:43:36,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 17:43:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 17:43:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-14 17:43:36,471 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 254 [2020-10-14 17:43:36,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:43:36,472 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-14 17:43:36,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 17:43:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-14 17:43:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 17:43:36,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:36,474 INFO L422 BasicCegarLoop]: trace histogram [114, 114, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:43:36,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 17:43:36,474 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:36,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1058859327, now seen corresponding path program 38 times [2020-10-14 17:43:36,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:36,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426926566] [2020-10-14 17:43:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:41,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:41,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 17:43:41,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:43:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:43:41,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:41,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 17:43:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:43:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 17:43:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:43:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:41,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:41,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:41,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:43:41,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:43:41,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:41,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:43:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:43:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:43:41,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:41,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:43:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:41,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:43:41,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:41,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 17:43:41,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:41,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 17:43:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 17:43:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:42,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 17:43:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:42,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:43,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:43:43,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 17:43:43,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:43,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 17:43:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 17:43:43,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-14 17:43:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:43,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:43:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:43:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 17:43:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:43,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 17:43:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:43:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 17:43:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:43:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 13239 backedges. 4332 proven. 8664 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-14 17:43:43,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426926566] [2020-10-14 17:43:43,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:43:43,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 17:43:43,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684412782] [2020-10-14 17:43:43,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 17:43:43,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:43:43,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 17:43:43,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:43:43,353 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 42 states. [2020-10-14 17:43:44,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:43:44,924 INFO L93 Difference]: Finished difference Result 196 states and 206 transitions. [2020-10-14 17:43:44,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 17:43:44,925 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 260 [2020-10-14 17:43:44,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:43:44,926 INFO L225 Difference]: With dead ends: 196 [2020-10-14 17:43:44,927 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 17:43:44,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2020-10-14 17:43:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 17:43:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-14 17:43:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 17:43:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-14 17:43:44,935 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 260 [2020-10-14 17:43:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:43:44,936 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-14 17:43:44,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 17:43:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-14 17:43:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 17:43:44,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:44,938 INFO L422 BasicCegarLoop]: trace histogram [117, 117, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:43:44,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 17:43:44,938 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:44,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:44,938 INFO L82 PathProgramCache]: Analyzing trace with hash 369785373, now seen corresponding path program 39 times [2020-10-14 17:43:44,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:44,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348454978] [2020-10-14 17:43:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking...