/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/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:34:30,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:34:30,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:34:30,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:34:30,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:34:30,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:34:30,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:34:30,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:34:30,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:34:30,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:34:30,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:34:30,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:34:30,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:34:30,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:34:30,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:34:30,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:34:30,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:34:30,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:34:30,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:34:30,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:34:30,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:34:30,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:34:30,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:34:30,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:34:30,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:34:30,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:34:30,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:34:30,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:34:30,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:34:30,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:34:30,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:34:30,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:34:30,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:34:30,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:34:30,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:34:30,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:34:30,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:34:30,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:34:30,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:34:30,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:34:30,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:34:30,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 18:34:30,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:34:30,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:34:30,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:34:30,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:34:30,565 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:34:30,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:34:30,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:34:30,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:34:30,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:34:30,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:34:30,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:34:30,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:34:30,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:34:30,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:34:30,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:34:30,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:34:30,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:34:30,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:34:30,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:34:30,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:34:30,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:34:30,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:34:30,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:34:30,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:34:30,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:34:30,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:34:30,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:34:30,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:34:30,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:34:30,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:34:30,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:34:30,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:34:30,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:34:30,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:34:30,911 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:34:30,911 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-10-14 18:34:30,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0175f4185/55f1e533b7f24de18d821e43516dff5c/FLAG6f9af9297 [2020-10-14 18:34:31,466 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:34:31,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-10-14 18:34:31,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0175f4185/55f1e533b7f24de18d821e43516dff5c/FLAG6f9af9297 [2020-10-14 18:34:31,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0175f4185/55f1e533b7f24de18d821e43516dff5c [2020-10-14 18:34:31,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:34:31,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:34:31,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:34:31,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:34:31,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:34:31,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f22ae5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31, skipping insertion in model container [2020-10-14 18:34:31,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:34:31,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:34:32,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:34:32,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:34:32,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:34:32,301 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:34:32,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32 WrapperNode [2020-10-14 18:34:32,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:34:32,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:34:32,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:34:32,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:34:32,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32" (1/1) ... [2020-10-14 18:34:32,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32" (1/1) ... [2020-10-14 18:34:32,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32" (1/1) ... [2020-10-14 18:34:32,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32" (1/1) ... [2020-10-14 18:34:32,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32" (1/1) ... [2020-10-14 18:34:32,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32" (1/1) ... [2020-10-14 18:34:32,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32" (1/1) ... [2020-10-14 18:34:32,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:34:32,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:34:32,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:34:32,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:34:32,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:34:32,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:34:32,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:34:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:34:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-14 18:34:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-14 18:34:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-14 18:34:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:34:32,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:34:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 18:34:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 18:34:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:34:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-14 18:34:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-14 18:34:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-14 18:34:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:34:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:34:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:34:32,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:34:32,831 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:34:32,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:34:32 BoogieIcfgContainer [2020-10-14 18:34:32,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:34:32,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:34:32,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:34:32,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:34:32,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:34:31" (1/3) ... [2020-10-14 18:34:32,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224778d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:34:32, skipping insertion in model container [2020-10-14 18:34:32,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:32" (2/3) ... [2020-10-14 18:34:32,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224778d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:34:32, skipping insertion in model container [2020-10-14 18:34:32,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:34:32" (3/3) ... [2020-10-14 18:34:32,845 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-10-14 18:34:32,856 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:34:32,864 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:34:32,878 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:34:32,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:34:32,901 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:34:32,902 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:34:32,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:34:32,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:34:32,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:34:32,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:34:32,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:34:32,922 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-14 18:34:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 18:34:32,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:32,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:32,931 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:32,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:32,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1570912407, now seen corresponding path program 1 times [2020-10-14 18:34:32,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:32,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033580829] [2020-10-14 18:34:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:33,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:33,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 18:34:37,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:34:37,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4150 [2020-10-14 18:34:37,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:34:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:34:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 18:34:37,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:34:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:37,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:37,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:37,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:37,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:37,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 18:34:37,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:37,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:37,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:37,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 18:34:37,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:34:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:37,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:37,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:34:37,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:34:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:34:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:37,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:34:37,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:34:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:37,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 18:34:37,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:34:37,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 18:34:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 18:34:37,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033580829] [2020-10-14 18:34:37,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:37,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:34:37,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543049245] [2020-10-14 18:34:37,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:34:37,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:37,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:34:37,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:34:37,635 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 6 states. [2020-10-14 18:34:37,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:37,851 INFO L93 Difference]: Finished difference Result 135 states and 209 transitions. [2020-10-14 18:34:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:34:37,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-14 18:34:37,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:37,881 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:34:37,881 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 18:34:37,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:34:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 18:34:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-10-14 18:34:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 18:34:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 99 transitions. [2020-10-14 18:34:38,020 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 99 transitions. Word has length 48 [2020-10-14 18:34:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:38,021 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 99 transitions. [2020-10-14 18:34:38,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:34:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 99 transitions. [2020-10-14 18:34:38,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 18:34:38,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:38,035 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:38,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:34:38,038 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:38,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:38,039 INFO L82 PathProgramCache]: Analyzing trace with hash -243075725, now seen corresponding path program 1 times [2020-10-14 18:34:38,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:38,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858512451] [2020-10-14 18:34:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:38,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 18:34:43,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:34:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:34:43,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:34:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 18:34:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:34:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:43,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:43,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:43,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:43,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:43,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:43,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:43,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:34:43,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:34:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:43,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:34:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:43,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:43,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:43,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:34:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:43,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:43,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:34:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:43,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 18:34:43,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:43,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:43,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:34:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:43,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858512451] [2020-10-14 18:34:43,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:43,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:34:43,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880085912] [2020-10-14 18:34:43,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:34:43,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:43,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:34:43,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:34:43,250 INFO L87 Difference]: Start difference. First operand 69 states and 99 transitions. Second operand 6 states. [2020-10-14 18:34:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:43,503 INFO L93 Difference]: Finished difference Result 176 states and 258 transitions. [2020-10-14 18:34:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:34:43,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 18:34:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:43,508 INFO L225 Difference]: With dead ends: 176 [2020-10-14 18:34:43,508 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 18:34:43,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:34:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 18:34:43,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2020-10-14 18:34:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 18:34:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2020-10-14 18:34:43,555 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 52 [2020-10-14 18:34:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:43,555 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2020-10-14 18:34:43,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:34:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2020-10-14 18:34:43,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 18:34:43,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:43,561 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:43,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:34:43,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash 922622062, now seen corresponding path program 1 times [2020-10-14 18:34:43,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:43,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921174739] [2020-10-14 18:34:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:44,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:44,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 18:34:44,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-14 18:34:44,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:44,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:34:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 18:34:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:34:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:44,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:44,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:44,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:44,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:44,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:44,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:44,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:44,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:44,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:44,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:44,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:44,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:44,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:44,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:44,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:44,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:44,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:44,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:44,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:44,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:44,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:44,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:44,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:44,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 18:34:44,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 18:34:44,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:44,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:34:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:34:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:44,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:34:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:44,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:44,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:44,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:44,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:44,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:34:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:44,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:44,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:44,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:44,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 18:34:44,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:44,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:34:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:44,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:44,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:44,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:44,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 18:34:44,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:44,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:34:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:34:44,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921174739] [2020-10-14 18:34:44,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:44,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:34:44,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82347905] [2020-10-14 18:34:44,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:34:44,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:44,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:34:44,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:44,747 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 10 states. [2020-10-14 18:34:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:45,030 INFO L93 Difference]: Finished difference Result 199 states and 287 transitions. [2020-10-14 18:34:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:34:45,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-14 18:34:45,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:45,034 INFO L225 Difference]: With dead ends: 199 [2020-10-14 18:34:45,034 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 18:34:45,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:34:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 18:34:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-10-14 18:34:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 18:34:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 154 transitions. [2020-10-14 18:34:45,057 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 154 transitions. Word has length 55 [2020-10-14 18:34:45,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:45,058 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 154 transitions. [2020-10-14 18:34:45,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:34:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 154 transitions. [2020-10-14 18:34:45,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 18:34:45,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:45,060 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:45,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:34:45,061 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:45,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash -928149922, now seen corresponding path program 1 times [2020-10-14 18:34:45,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:45,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656063458] [2020-10-14 18:34:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 18:34:45,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:34:45,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-14 18:34:45,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:34:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:45,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:45,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:45,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:45,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:45,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:45,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:45,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:45,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:45,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 18:34:45,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:34:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:34:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:34:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:45,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:45,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:45,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:45,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:45,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:34:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:45,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:45,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:45,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:34:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:45,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:45,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:45,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:45,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:45,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:45,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656063458] [2020-10-14 18:34:45,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:45,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 18:34:45,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787471128] [2020-10-14 18:34:45,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:34:45,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:45,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:34:45,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:34:45,472 INFO L87 Difference]: Start difference. First operand 109 states and 154 transitions. Second operand 4 states. [2020-10-14 18:34:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:45,578 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2020-10-14 18:34:45,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:34:45,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 18:34:45,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:45,581 INFO L225 Difference]: With dead ends: 206 [2020-10-14 18:34:45,581 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 18:34:45,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 18:34:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 18:34:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2020-10-14 18:34:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 18:34:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 155 transitions. [2020-10-14 18:34:45,599 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 155 transitions. Word has length 56 [2020-10-14 18:34:45,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:45,600 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 155 transitions. [2020-10-14 18:34:45,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:34:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 155 transitions. [2020-10-14 18:34:45,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 18:34:45,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:45,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:45,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:34:45,602 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:45,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:45,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1588904245, now seen corresponding path program 1 times [2020-10-14 18:34:45,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:45,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748294958] [2020-10-14 18:34:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 18:34:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-14 18:34:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:34:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:45,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:45,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:45,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:45,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:45,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:45,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 18:34:45,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 18:34:45,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:34:45,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:34:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:46,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:34:46,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:34:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:46,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:46,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:34:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:34:46,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:46,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748294958] [2020-10-14 18:34:46,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:46,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:34:46,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466527747] [2020-10-14 18:34:46,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:34:46,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:46,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:34:46,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:34:46,112 INFO L87 Difference]: Start difference. First operand 110 states and 155 transitions. Second operand 5 states. [2020-10-14 18:34:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:46,245 INFO L93 Difference]: Finished difference Result 212 states and 311 transitions. [2020-10-14 18:34:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:34:46,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-14 18:34:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:46,251 INFO L225 Difference]: With dead ends: 212 [2020-10-14 18:34:46,251 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 18:34:46,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:34:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 18:34:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2020-10-14 18:34:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 18:34:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 157 transitions. [2020-10-14 18:34:46,288 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 157 transitions. Word has length 57 [2020-10-14 18:34:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:46,290 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 157 transitions. [2020-10-14 18:34:46,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:34:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 157 transitions. [2020-10-14 18:34:46,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:34:46,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:46,293 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:46,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:34:46,293 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:46,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1775343747, now seen corresponding path program 1 times [2020-10-14 18:34:46,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:46,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939519743] [2020-10-14 18:34:46,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 18:34:46,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 18:34:46,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:34:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:46,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:46,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:46,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 18:34:46,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 18:34:46,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:46,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:46,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:34:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:34:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:46,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:46,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:34:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:46,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:46,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:34:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:46,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939519743] [2020-10-14 18:34:46,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:46,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:34:46,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969435525] [2020-10-14 18:34:46,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:34:46,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:46,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:34:46,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:34:46,678 INFO L87 Difference]: Start difference. First operand 111 states and 157 transitions. Second operand 5 states. [2020-10-14 18:34:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:46,765 INFO L93 Difference]: Finished difference Result 218 states and 315 transitions. [2020-10-14 18:34:46,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:34:46,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 18:34:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:46,768 INFO L225 Difference]: With dead ends: 218 [2020-10-14 18:34:46,768 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 18:34:46,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 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 18:34:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 18:34:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 116. [2020-10-14 18:34:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 18:34:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 164 transitions. [2020-10-14 18:34:46,796 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 164 transitions. Word has length 58 [2020-10-14 18:34:46,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:46,797 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 164 transitions. [2020-10-14 18:34:46,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:34:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 164 transitions. [2020-10-14 18:34:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 18:34:46,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:46,800 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:46,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:34:46,800 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:46,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:46,801 INFO L82 PathProgramCache]: Analyzing trace with hash 847268444, now seen corresponding path program 1 times [2020-10-14 18:34:46,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:46,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142341377] [2020-10-14 18:34:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 18:34:47,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:47,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-14 18:34:47,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:34:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:34:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:47,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:47,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:47,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:47,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:47,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:47,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 18:34:47,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 18:34:47,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:34:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 18:34:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:34:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:47,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:47,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:47,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:47,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:34:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:47,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:47,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:47,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:34:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:47,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:47,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:47,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:47,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142341377] [2020-10-14 18:34:47,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:47,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:34:47,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700779496] [2020-10-14 18:34:47,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:34:47,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:47,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:34:47,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:34:47,348 INFO L87 Difference]: Start difference. First operand 116 states and 164 transitions. Second operand 6 states. [2020-10-14 18:34:47,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:47,577 INFO L93 Difference]: Finished difference Result 241 states and 355 transitions. [2020-10-14 18:34:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:34:47,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-14 18:34:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:47,580 INFO L225 Difference]: With dead ends: 241 [2020-10-14 18:34:47,581 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 18:34:47,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:34:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 18:34:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2020-10-14 18:34:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 18:34:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2020-10-14 18:34:47,603 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 60 [2020-10-14 18:34:47,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:47,604 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2020-10-14 18:34:47,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:34:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2020-10-14 18:34:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 18:34:47,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:47,605 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:47,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:34:47,606 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:47,606 INFO L82 PathProgramCache]: Analyzing trace with hash 731565580, now seen corresponding path program 2 times [2020-10-14 18:34:47,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:47,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865076553] [2020-10-14 18:34:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 18:34:47,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-14 18:34:47,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:34:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:34:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:47,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:47,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:47,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 18:34:47,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 18:34:47,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:34:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:34:47,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:47,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:34:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:47,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:47,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:34:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:48,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:34:48,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:34:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:48,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:48,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:48,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865076553] [2020-10-14 18:34:48,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:48,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:34:48,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881657353] [2020-10-14 18:34:48,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:34:48,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:48,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:34:48,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:34:48,027 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand 6 states. [2020-10-14 18:34:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:48,146 INFO L93 Difference]: Finished difference Result 230 states and 336 transitions. [2020-10-14 18:34:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:34:48,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-14 18:34:48,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:48,150 INFO L225 Difference]: With dead ends: 230 [2020-10-14 18:34:48,150 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 18:34:48,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 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 18:34:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 18:34:48,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 122. [2020-10-14 18:34:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 18:34:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 171 transitions. [2020-10-14 18:34:48,164 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 171 transitions. Word has length 61 [2020-10-14 18:34:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:48,164 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 171 transitions. [2020-10-14 18:34:48,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:34:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 171 transitions. [2020-10-14 18:34:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:34:48,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:48,166 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:48,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:34:48,167 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:48,167 INFO L82 PathProgramCache]: Analyzing trace with hash 510478635, now seen corresponding path program 2 times [2020-10-14 18:34:48,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:48,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545666587] [2020-10-14 18:34:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 18:34:48,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:48,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-14 18:34:48,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:34:48,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:48,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:34:48,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:48,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:48,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:48,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:48,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 18:34:48,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 18:34:48,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:34:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 18:34:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:34:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:48,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:48,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:34:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:48,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:48,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:34:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:48,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:48,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:48,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545666587] [2020-10-14 18:34:48,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:48,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 18:34:48,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223621146] [2020-10-14 18:34:48,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 18:34:48,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:48,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 18:34:48,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:34:48,732 INFO L87 Difference]: Start difference. First operand 122 states and 171 transitions. Second operand 7 states. [2020-10-14 18:34:48,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:48,864 INFO L93 Difference]: Finished difference Result 236 states and 349 transitions. [2020-10-14 18:34:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:34:48,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-14 18:34:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:48,867 INFO L225 Difference]: With dead ends: 236 [2020-10-14 18:34:48,867 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 18:34:48,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:34:48,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 18:34:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2020-10-14 18:34:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 18:34:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 173 transitions. [2020-10-14 18:34:48,880 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 173 transitions. Word has length 63 [2020-10-14 18:34:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:48,881 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 173 transitions. [2020-10-14 18:34:48,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 18:34:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 173 transitions. [2020-10-14 18:34:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 18:34:48,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:48,882 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:48,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:34:48,883 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:48,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:48,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1118983907, now seen corresponding path program 3 times [2020-10-14 18:34:48,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:48,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348788520] [2020-10-14 18:34:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 18:34:49,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 18:34:49,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:34:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:34:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:49,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:49,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:49,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 18:34:49,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 18:34:49,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:34:49,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:49,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 18:34:49,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:34:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:49,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:34:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:49,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:34:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:49,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:49,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:49,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348788520] [2020-10-14 18:34:49,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:49,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 18:34:49,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561780621] [2020-10-14 18:34:49,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 18:34:49,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:49,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 18:34:49,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:34:49,391 INFO L87 Difference]: Start difference. First operand 123 states and 173 transitions. Second operand 7 states. [2020-10-14 18:34:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:49,489 INFO L93 Difference]: Finished difference Result 253 states and 372 transitions. [2020-10-14 18:34:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:34:49,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-14 18:34:49,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:49,491 INFO L225 Difference]: With dead ends: 253 [2020-10-14 18:34:49,491 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 18:34:49,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:34:49,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 18:34:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-10-14 18:34:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 18:34:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 180 transitions. [2020-10-14 18:34:49,506 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 180 transitions. Word has length 64 [2020-10-14 18:34:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:49,506 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 180 transitions. [2020-10-14 18:34:49,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 18:34:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 180 transitions. [2020-10-14 18:34:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 18:34:49,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:49,508 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:49,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:34:49,509 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:49,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:49,509 INFO L82 PathProgramCache]: Analyzing trace with hash 248882172, now seen corresponding path program 3 times [2020-10-14 18:34:49,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:49,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093195510] [2020-10-14 18:34:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 18:34:49,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-14 18:34:49,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:34:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:34:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:49,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:49,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:49,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 18:34:50,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 18:34:50,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:34:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 18:34:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:34:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:34:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:50,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:50,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:50,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:34:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:50,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:50,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093195510] [2020-10-14 18:34:50,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:50,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:34:50,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627312322] [2020-10-14 18:34:50,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:34:50,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:50,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:34:50,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:34:50,189 INFO L87 Difference]: Start difference. First operand 128 states and 180 transitions. Second operand 8 states. [2020-10-14 18:34:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:50,378 INFO L93 Difference]: Finished difference Result 248 states and 369 transitions. [2020-10-14 18:34:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:34:50,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-14 18:34:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:50,383 INFO L225 Difference]: With dead ends: 248 [2020-10-14 18:34:50,383 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 18:34:50,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:34:50,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 18:34:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 129. [2020-10-14 18:34:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 18:34:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 182 transitions. [2020-10-14 18:34:50,404 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 182 transitions. Word has length 66 [2020-10-14 18:34:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:50,405 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 182 transitions. [2020-10-14 18:34:50,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:34:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 182 transitions. [2020-10-14 18:34:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 18:34:50,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:50,407 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:50,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:34:50,407 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:50,408 INFO L82 PathProgramCache]: Analyzing trace with hash -638539668, now seen corresponding path program 4 times [2020-10-14 18:34:50,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:50,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055313058] [2020-10-14 18:34:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 18:34:50,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:50,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 18:34:50,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:34:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 18:34:50,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:50,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:50,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:50,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:50,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 18:34:50,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 18:34:50,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:34:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:34:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:34:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:50,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:50,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:34:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:50,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:50,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:34:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:51,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:51,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:51,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:51,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:51,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055313058] [2020-10-14 18:34:51,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:51,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:34:51,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465527892] [2020-10-14 18:34:51,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:34:51,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:51,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:34:51,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:34:51,012 INFO L87 Difference]: Start difference. First operand 129 states and 182 transitions. Second operand 8 states. [2020-10-14 18:34:51,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:51,163 INFO L93 Difference]: Finished difference Result 270 states and 398 transitions. [2020-10-14 18:34:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:34:51,164 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-14 18:34:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:51,166 INFO L225 Difference]: With dead ends: 270 [2020-10-14 18:34:51,166 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 18:34:51,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:34:51,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 18:34:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 134. [2020-10-14 18:34:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 18:34:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 189 transitions. [2020-10-14 18:34:51,185 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 189 transitions. Word has length 67 [2020-10-14 18:34:51,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:51,185 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 189 transitions. [2020-10-14 18:34:51,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:34:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 189 transitions. [2020-10-14 18:34:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 18:34:51,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:51,187 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:51,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:34:51,187 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:51,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1900672117, now seen corresponding path program 4 times [2020-10-14 18:34:51,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:51,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041951801] [2020-10-14 18:34:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:51,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 18:34:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-14 18:34:51,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:51,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:34:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 18:34:51,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:51,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:51,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:51,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:51,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:51,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:51,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:51,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:51,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:51,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:51,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:51,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:51,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:51,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:51,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:51,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:51,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:51,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:51,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 18:34:51,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:51,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 18:34:51,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:51,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:34:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 18:34:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:51,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:34:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:51,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:51,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:51,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:51,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:51,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:51,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:51,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:34:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:51,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:51,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:51,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:51,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:51,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:51,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:51,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:51,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:51,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:51,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:51,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:34:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:51,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:51,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:51,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:51,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:51,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:51,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:51,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041951801] [2020-10-14 18:34:51,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:51,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:34:51,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974043687] [2020-10-14 18:34:51,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:34:51,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:51,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:34:51,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:34:51,997 INFO L87 Difference]: Start difference. First operand 134 states and 189 transitions. Second operand 9 states. [2020-10-14 18:34:52,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:52,391 INFO L93 Difference]: Finished difference Result 281 states and 417 transitions. [2020-10-14 18:34:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:34:52,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-14 18:34:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:52,393 INFO L225 Difference]: With dead ends: 281 [2020-10-14 18:34:52,393 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 18:34:52,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:34:52,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 18:34:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 136. [2020-10-14 18:34:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 18:34:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 190 transitions. [2020-10-14 18:34:52,420 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 190 transitions. Word has length 69 [2020-10-14 18:34:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:52,421 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 190 transitions. [2020-10-14 18:34:52,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:34:52,422 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 190 transitions. [2020-10-14 18:34:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 18:34:52,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:52,423 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:52,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:34:52,423 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:52,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1444754109, now seen corresponding path program 5 times [2020-10-14 18:34:52,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:52,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45396631] [2020-10-14 18:34:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:52,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:52,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 18:34:52,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:52,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-14 18:34:52,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:52,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:34:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:34:52,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:52,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:52,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:52,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:52,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:52,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:52,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:52,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:52,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:52,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:52,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:52,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:52,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:53,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:53,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 18:34:53,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 18:34:53,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:53,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:34:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:34:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:34:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:53,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:53,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:53,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:53,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:53,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:53,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:34:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:53,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:53,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:53,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:53,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:53,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:53,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:34:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:53,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:53,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:53,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:53,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:53,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:53,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45396631] [2020-10-14 18:34:53,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:53,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:34:53,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232009410] [2020-10-14 18:34:53,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:34:53,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:53,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:34:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:34:53,185 INFO L87 Difference]: Start difference. First operand 136 states and 190 transitions. Second operand 9 states. [2020-10-14 18:34:53,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:53,318 INFO L93 Difference]: Finished difference Result 275 states and 407 transitions. [2020-10-14 18:34:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:34:53,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-14 18:34:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:53,321 INFO L225 Difference]: With dead ends: 275 [2020-10-14 18:34:53,321 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 18:34:53,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 18:34:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 140. [2020-10-14 18:34:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 18:34:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 195 transitions. [2020-10-14 18:34:53,353 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 195 transitions. Word has length 70 [2020-10-14 18:34:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:53,353 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 195 transitions. [2020-10-14 18:34:53,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:34:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 195 transitions. [2020-10-14 18:34:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 18:34:53,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:53,355 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:53,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:34:53,355 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:53,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1310112356, now seen corresponding path program 5 times [2020-10-14 18:34:53,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:53,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296334647] [2020-10-14 18:34:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:53,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:53,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 18:34:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-14 18:34:53,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:53,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:34:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 18:34:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:53,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:53,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:53,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:53,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:53,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:53,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:54,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:54,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:54,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:54,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:54,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:54,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:54,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:54,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:54,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 18:34:54,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 18:34:54,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:54,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:34:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 18:34:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:34:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:54,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:54,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:54,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:54,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:54,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:54,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 18:34:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:34:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:54,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:54,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:54,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:54,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:54,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:34:54,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:34:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:54,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:54,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:54,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296334647] [2020-10-14 18:34:54,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:54,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:34:54,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083513556] [2020-10-14 18:34:54,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:34:54,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:54,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:34:54,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:54,327 INFO L87 Difference]: Start difference. First operand 140 states and 195 transitions. Second operand 10 states. [2020-10-14 18:34:54,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:54,980 INFO L93 Difference]: Finished difference Result 292 states and 433 transitions. [2020-10-14 18:34:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:34:54,981 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-10-14 18:34:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:54,983 INFO L225 Difference]: With dead ends: 292 [2020-10-14 18:34:54,983 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 18:34:54,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:34:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 18:34:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 142. [2020-10-14 18:34:55,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 18:34:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 198 transitions. [2020-10-14 18:34:55,016 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 198 transitions. Word has length 72 [2020-10-14 18:34:55,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:55,016 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 198 transitions. [2020-10-14 18:34:55,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:34:55,017 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 198 transitions. [2020-10-14 18:34:55,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 18:34:55,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:55,019 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:55,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:34:55,020 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:55,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1722729780, now seen corresponding path program 6 times [2020-10-14 18:34:55,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:55,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135450712] [2020-10-14 18:34:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:55,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:55,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 18:34:55,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:55,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-14 18:34:55,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:55,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:55,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:34:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:34:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:55,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:55,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:55,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:55,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:55,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:55,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:55,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:55,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:55,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:55,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:55,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:55,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:55,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:55,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:55,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 18:34:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 18:34:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:55,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:34:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 18:34:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:55,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:34:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:55,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:55,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:55,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:55,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:55,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:55,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:34:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:55,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:55,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:55,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:55,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:55,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:55,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:34:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:55,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:55,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:55,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:55,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:55,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:55,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:55,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:55,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 65 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:55,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135450712] [2020-10-14 18:34:55,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:55,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:34:55,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714894400] [2020-10-14 18:34:55,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:34:55,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:55,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:34:55,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:55,780 INFO L87 Difference]: Start difference. First operand 142 states and 198 transitions. Second operand 10 states. [2020-10-14 18:34:56,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:56,032 INFO L93 Difference]: Finished difference Result 294 states and 440 transitions. [2020-10-14 18:34:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:34:56,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-14 18:34:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:56,035 INFO L225 Difference]: With dead ends: 294 [2020-10-14 18:34:56,035 INFO L226 Difference]: Without dead ends: 188 [2020-10-14 18:34:56,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:34:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-14 18:34:56,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 146. [2020-10-14 18:34:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 18:34:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 203 transitions. [2020-10-14 18:34:56,057 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 203 transitions. Word has length 73 [2020-10-14 18:34:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:56,058 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 203 transitions. [2020-10-14 18:34:56,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:34:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 203 transitions. [2020-10-14 18:34:56,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 18:34:56,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:56,064 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:56,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:34:56,064 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:56,065 INFO L82 PathProgramCache]: Analyzing trace with hash -130316821, now seen corresponding path program 6 times [2020-10-14 18:34:56,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:56,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434273660] [2020-10-14 18:34:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:56,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:56,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:56,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 18:34:56,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:56,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-14 18:34:56,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:56,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:34:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 18:34:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:56,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:56,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:56,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:56,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:56,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:56,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:56,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:56,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:56,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:56,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:56,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:56,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:56,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:56,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 18:34:56,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 18:34:56,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:56,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:34:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 18:34:56,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:34:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:57,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:57,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:57,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:57,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:57,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:57,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:57,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:34:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:57,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:57,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:57,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:57,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:57,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:57,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:34:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:57,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:57,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:57,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:57,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:57,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 71 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:57,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434273660] [2020-10-14 18:34:57,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:57,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:34:57,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355054171] [2020-10-14 18:34:57,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:34:57,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:57,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:34:57,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:34:57,038 INFO L87 Difference]: Start difference. First operand 146 states and 203 transitions. Second operand 11 states. [2020-10-14 18:34:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:57,361 INFO L93 Difference]: Finished difference Result 284 states and 425 transitions. [2020-10-14 18:34:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:34:57,362 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2020-10-14 18:34:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:57,364 INFO L225 Difference]: With dead ends: 284 [2020-10-14 18:34:57,364 INFO L226 Difference]: Without dead ends: 181 [2020-10-14 18:34:57,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:34:57,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-14 18:34:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 147. [2020-10-14 18:34:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 18:34:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 205 transitions. [2020-10-14 18:34:57,391 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 205 transitions. Word has length 75 [2020-10-14 18:34:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:57,392 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 205 transitions. [2020-10-14 18:34:57,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:34:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 205 transitions. [2020-10-14 18:34:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 18:34:57,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:57,393 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:57,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:34:57,394 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:57,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:57,394 INFO L82 PathProgramCache]: Analyzing trace with hash 491193437, now seen corresponding path program 7 times [2020-10-14 18:34:57,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:57,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644506195] [2020-10-14 18:34:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:57,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:57,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:57,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 18:34:57,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-14 18:34:57,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:57,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:34:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 18:34:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:57,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:57,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:57,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:57,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:57,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:57,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:57,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:57,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:57,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:57,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:57,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:57,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:57,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:57,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:57,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:57,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:58,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:58,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 18:34:58,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:58,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 18:34:58,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:58,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:34:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 18:34:58,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:58,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:34:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:58,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:58,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:58,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:58,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:58,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:34:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:58,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:58,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:58,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:58,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:34:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:58,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:58,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:58,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:58,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:58,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:58,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:58,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:58,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644506195] [2020-10-14 18:34:58,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:58,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:34:58,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250275647] [2020-10-14 18:34:58,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:34:58,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:58,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:34:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:34:58,174 INFO L87 Difference]: Start difference. First operand 147 states and 205 transitions. Second operand 11 states. [2020-10-14 18:34:58,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:58,423 INFO L93 Difference]: Finished difference Result 314 states and 471 transitions. [2020-10-14 18:34:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:34:58,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-14 18:34:58,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:58,426 INFO L225 Difference]: With dead ends: 314 [2020-10-14 18:34:58,426 INFO L226 Difference]: Without dead ends: 205 [2020-10-14 18:34:58,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:34:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-14 18:34:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 152. [2020-10-14 18:34:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 18:34:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 212 transitions. [2020-10-14 18:34:58,447 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 212 transitions. Word has length 76 [2020-10-14 18:34:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:58,448 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 212 transitions. [2020-10-14 18:34:58,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:34:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 212 transitions. [2020-10-14 18:34:58,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 18:34:58,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:58,450 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:58,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:34:58,450 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:58,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:58,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1441083196, now seen corresponding path program 7 times [2020-10-14 18:34:58,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:58,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632700894] [2020-10-14 18:34:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:59,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:59,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 18:34:59,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-14 18:34:59,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:59,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:34:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:34:59,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 18:34:59,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:59,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:59,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:59,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:59,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:59,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:59,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:34:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:59,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:59,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:59,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:59,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:59,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:59,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:59,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:59,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:59,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:59,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 18:34:59,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 18:34:59,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:59,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:34:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 18:34:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:59,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:34:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:59,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:59,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:59,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:59,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:59,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:59,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:59,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:59,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:34:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:59,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:59,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:59,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:59,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:59,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:34:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:59,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:59,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:34:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:59,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:59,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:34:59,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:59,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:59,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:59,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:34:59,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:59,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:59,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632700894] [2020-10-14 18:34:59,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:59,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:34:59,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900767407] [2020-10-14 18:34:59,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:34:59,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:59,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:34:59,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:34:59,608 INFO L87 Difference]: Start difference. First operand 152 states and 212 transitions. Second operand 12 states. [2020-10-14 18:34:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:59,981 INFO L93 Difference]: Finished difference Result 296 states and 445 transitions. [2020-10-14 18:34:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:34:59,982 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-10-14 18:34:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:59,983 INFO L225 Difference]: With dead ends: 296 [2020-10-14 18:34:59,984 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 18:34:59,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:34:59,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 18:35:00,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2020-10-14 18:35:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 18:35:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 214 transitions. [2020-10-14 18:35:00,006 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 214 transitions. Word has length 78 [2020-10-14 18:35:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:00,006 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 214 transitions. [2020-10-14 18:35:00,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:35:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 214 transitions. [2020-10-14 18:35:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 18:35:00,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:00,008 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:00,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:35:00,009 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:00,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1959953708, now seen corresponding path program 8 times [2020-10-14 18:35:00,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:00,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149523149] [2020-10-14 18:35:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:00,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:00,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:00,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 18:35:00,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:00,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-14 18:35:00,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:00,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:35:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 18:35:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:00,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:00,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:00,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:00,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:00,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:00,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:00,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:00,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:00,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:00,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:00,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:00,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:00,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:00,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 18:35:00,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:00,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 18:35:00,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:00,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:00,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:35:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 18:35:00,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:35:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:00,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:00,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:00,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:00,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:00,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:00,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:00,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:35:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:00,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:00,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:00,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:00,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:00,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:00,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:35:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:00,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:00,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:00,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:00,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:00,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:00,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:00,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 4 proven. 108 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:00,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149523149] [2020-10-14 18:35:00,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:00,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:35:00,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454696590] [2020-10-14 18:35:00,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:35:00,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:00,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:35:00,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:35:00,815 INFO L87 Difference]: Start difference. First operand 153 states and 214 transitions. Second operand 12 states. [2020-10-14 18:35:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:01,102 INFO L93 Difference]: Finished difference Result 334 states and 502 transitions. [2020-10-14 18:35:01,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:35:01,103 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-14 18:35:01,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:01,105 INFO L225 Difference]: With dead ends: 334 [2020-10-14 18:35:01,105 INFO L226 Difference]: Without dead ends: 222 [2020-10-14 18:35:01,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:35:01,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-14 18:35:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 158. [2020-10-14 18:35:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 18:35:01,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 221 transitions. [2020-10-14 18:35:01,132 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 221 transitions. Word has length 79 [2020-10-14 18:35:01,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:01,132 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 221 transitions. [2020-10-14 18:35:01,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:35:01,132 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 221 transitions. [2020-10-14 18:35:01,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 18:35:01,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:01,134 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:01,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:35:01,134 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:01,134 INFO L82 PathProgramCache]: Analyzing trace with hash -124536757, now seen corresponding path program 8 times [2020-10-14 18:35:01,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:01,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574592758] [2020-10-14 18:35:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:01,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:01,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 18:35:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-10-14 18:35:01,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:01,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:35:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 18:35:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:01,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:01,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:01,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:01,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:01,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:01,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:01,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:01,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:01,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:01,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:01,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:01,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:01,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:01,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:01,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:01,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:01,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:02,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 18:35:02,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 18:35:02,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:02,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:35:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:35:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:02,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:35:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:02,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:02,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:02,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:02,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:02,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:02,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:02,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:02,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:02,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:02,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:35:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:02,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:02,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:02,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:02,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:02,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:02,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:02,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:02,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:35:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:02,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:02,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:02,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:35:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:02,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:02,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 4 proven. 116 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:02,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574592758] [2020-10-14 18:35:02,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:02,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:35:02,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073421751] [2020-10-14 18:35:02,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:35:02,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:02,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:35:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:35:02,332 INFO L87 Difference]: Start difference. First operand 158 states and 221 transitions. Second operand 13 states. [2020-10-14 18:35:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:03,273 INFO L93 Difference]: Finished difference Result 333 states and 497 transitions. [2020-10-14 18:35:03,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:35:03,274 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-10-14 18:35:03,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:03,276 INFO L225 Difference]: With dead ends: 333 [2020-10-14 18:35:03,277 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 18:35:03,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:35:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 18:35:03,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 160. [2020-10-14 18:35:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-14 18:35:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 222 transitions. [2020-10-14 18:35:03,304 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 222 transitions. Word has length 81 [2020-10-14 18:35:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:03,304 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 222 transitions. [2020-10-14 18:35:03,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:35:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 222 transitions. [2020-10-14 18:35:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 18:35:03,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:03,306 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:03,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:35:03,308 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:03,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash 670375421, now seen corresponding path program 9 times [2020-10-14 18:35:03,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:03,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247879228] [2020-10-14 18:35:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:03,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:04,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 18:35:04,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-14 18:35:04,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:04,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:35:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 18:35:04,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:04,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:04,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:04,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:04,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:04,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:04,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:04,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:04,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:04,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:04,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:04,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:04,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:04,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 18:35:04,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:04,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 18:35:04,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:04,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:35:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 18:35:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:04,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:35:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:04,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:04,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:35:04,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:04,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:04,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:35:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:04,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:04,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:04,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:04,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:04,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:04,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:35:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:04,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:04,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:35:04,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:04,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 4 proven. 134 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:04,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247879228] [2020-10-14 18:35:04,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:04,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:35:04,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8829884] [2020-10-14 18:35:04,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:35:04,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:35:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=79, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:35:04,365 INFO L87 Difference]: Start difference. First operand 160 states and 222 transitions. Second operand 13 states. [2020-10-14 18:35:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:04,528 INFO L93 Difference]: Finished difference Result 327 states and 487 transitions. [2020-10-14 18:35:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:35:04,530 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-10-14 18:35:04,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:04,532 INFO L225 Difference]: With dead ends: 327 [2020-10-14 18:35:04,532 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 18:35:04,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:35:04,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 18:35:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 164. [2020-10-14 18:35:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 18:35:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 227 transitions. [2020-10-14 18:35:04,557 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 227 transitions. Word has length 82 [2020-10-14 18:35:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:04,558 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 227 transitions. [2020-10-14 18:35:04,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:35:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 227 transitions. [2020-10-14 18:35:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 18:35:04,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:04,561 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:04,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:35:04,562 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:04,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:04,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1836277980, now seen corresponding path program 9 times [2020-10-14 18:35:04,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:04,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182682261] [2020-10-14 18:35:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:05,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:05,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 18:35:05,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:05,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-10-14 18:35:05,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:05,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:35:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:35:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:05,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:05,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:05,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:05,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:05,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:05,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:05,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:05,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:05,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:05,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:05,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:05,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:05,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:05,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:05,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:05,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:06,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:06,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 18:35:06,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 18:35:06,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:06,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:35:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 18:35:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:06,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:35:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:06,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:06,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:06,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:06,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:06,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:06,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:35:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:06,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:06,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:06,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:06,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:06,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:06,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:06,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:35:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:06,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:06,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:06,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:06,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:06,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 4 proven. 143 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:06,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182682261] [2020-10-14 18:35:06,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:06,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:35:06,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098609989] [2020-10-14 18:35:06,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:35:06,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:06,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:35:06,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:35:06,448 INFO L87 Difference]: Start difference. First operand 164 states and 227 transitions. Second operand 14 states. [2020-10-14 18:35:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:07,502 INFO L93 Difference]: Finished difference Result 344 states and 513 transitions. [2020-10-14 18:35:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:35:07,502 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-14 18:35:07,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:07,504 INFO L225 Difference]: With dead ends: 344 [2020-10-14 18:35:07,504 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 18:35:07,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:35:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 18:35:07,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 166. [2020-10-14 18:35:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 18:35:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 230 transitions. [2020-10-14 18:35:07,528 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 230 transitions. Word has length 84 [2020-10-14 18:35:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:07,528 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 230 transitions. [2020-10-14 18:35:07,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:35:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 230 transitions. [2020-10-14 18:35:07,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 18:35:07,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:07,530 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:07,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:35:07,530 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:07,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:07,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1326090124, now seen corresponding path program 10 times [2020-10-14 18:35:07,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:07,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707974514] [2020-10-14 18:35:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:07,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:08,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:08,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 18:35:08,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-14 18:35:08,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:08,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:08,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:35:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 18:35:08,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:08,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:08,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:08,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:08,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:08,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:08,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:08,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:08,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:08,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:08,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:08,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:08,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:08,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:08,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:08,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:08,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:08,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 18:35:08,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 18:35:08,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:08,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:35:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 18:35:08,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:35:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:08,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:08,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:08,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:08,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:08,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:35:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:08,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:08,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:08,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:08,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:08,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:35:08,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:08,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:08,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:35:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:08,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:08,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:08,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:08,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:35:08,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:08,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 4 proven. 163 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:08,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707974514] [2020-10-14 18:35:08,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:08,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:35:08,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480823846] [2020-10-14 18:35:08,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:35:08,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:08,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:35:08,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:35:08,608 INFO L87 Difference]: Start difference. First operand 166 states and 230 transitions. Second operand 14 states. [2020-10-14 18:35:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:08,809 INFO L93 Difference]: Finished difference Result 340 states and 507 transitions. [2020-10-14 18:35:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:35:08,810 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-14 18:35:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:08,814 INFO L225 Difference]: With dead ends: 340 [2020-10-14 18:35:08,814 INFO L226 Difference]: Without dead ends: 222 [2020-10-14 18:35:08,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=106, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:35:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-14 18:35:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 170. [2020-10-14 18:35:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 18:35:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 235 transitions. [2020-10-14 18:35:08,844 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 235 transitions. Word has length 85 [2020-10-14 18:35:08,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:08,844 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 235 transitions. [2020-10-14 18:35:08,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:35:08,844 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 235 transitions. [2020-10-14 18:35:08,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 18:35:08,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:08,846 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:08,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:35:08,849 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:08,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash 617915051, now seen corresponding path program 10 times [2020-10-14 18:35:08,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:08,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017762843] [2020-10-14 18:35:08,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:09,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:09,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 18:35:09,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-14 18:35:09,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:09,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:35:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 18:35:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:09,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:09,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:09,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:09,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:09,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:09,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:09,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:09,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:09,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:09,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:09,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:09,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:09,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:10,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:10,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 18:35:10,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 18:35:10,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:10,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:35:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 18:35:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:35:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:10,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:10,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:10,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:10,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:10,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:35:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:10,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:10,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:10,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:10,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:10,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:10,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:35:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:10,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:10,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:10,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:10,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:10,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 4 proven. 173 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:10,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017762843] [2020-10-14 18:35:10,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:10,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:35:10,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803781113] [2020-10-14 18:35:10,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:35:10,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:35:10,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:35:10,408 INFO L87 Difference]: Start difference. First operand 170 states and 235 transitions. Second operand 15 states. [2020-10-14 18:35:11,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:11,675 INFO L93 Difference]: Finished difference Result 357 states and 533 transitions. [2020-10-14 18:35:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:35:11,676 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 87 [2020-10-14 18:35:11,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:11,678 INFO L225 Difference]: With dead ends: 357 [2020-10-14 18:35:11,678 INFO L226 Difference]: Without dead ends: 236 [2020-10-14 18:35:11,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:35:11,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-14 18:35:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 172. [2020-10-14 18:35:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 18:35:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 238 transitions. [2020-10-14 18:35:11,702 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 238 transitions. Word has length 87 [2020-10-14 18:35:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:11,703 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 238 transitions. [2020-10-14 18:35:11,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:35:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 238 transitions. [2020-10-14 18:35:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 18:35:11,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:11,704 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:11,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:35:11,705 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:11,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:11,705 INFO L82 PathProgramCache]: Analyzing trace with hash -2083422307, now seen corresponding path program 11 times [2020-10-14 18:35:11,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:11,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396460973] [2020-10-14 18:35:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:12,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:12,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 18:35:12,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:12,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-10-14 18:35:12,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:12,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:35:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:12,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 18:35:12,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:12,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:12,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:12,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:12,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:12,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:12,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:12,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:12,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:12,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:12,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:12,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:12,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:12,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:12,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:12,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:12,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:13,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 18:35:13,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 18:35:13,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:13,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:35:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 18:35:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:35:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:13,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:13,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:13,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:13,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:13,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:13,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:13,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:35:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:13,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:13,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:13,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:13,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:13,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:13,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:35:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:13,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:13,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:13,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:13,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:35:13,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:13,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 4 proven. 195 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:13,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396460973] [2020-10-14 18:35:13,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:13,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:35:13,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105586688] [2020-10-14 18:35:13,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:35:13,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:35:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=106, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:35:13,320 INFO L87 Difference]: Start difference. First operand 172 states and 238 transitions. Second operand 15 states. [2020-10-14 18:35:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:13,634 INFO L93 Difference]: Finished difference Result 353 states and 527 transitions. [2020-10-14 18:35:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:35:13,635 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-10-14 18:35:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:13,638 INFO L225 Difference]: With dead ends: 353 [2020-10-14 18:35:13,638 INFO L226 Difference]: Without dead ends: 232 [2020-10-14 18:35:13,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=121, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:35:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-14 18:35:13,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 176. [2020-10-14 18:35:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 18:35:13,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 243 transitions. [2020-10-14 18:35:13,675 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 243 transitions. Word has length 88 [2020-10-14 18:35:13,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:13,675 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 243 transitions. [2020-10-14 18:35:13,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:35:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 243 transitions. [2020-10-14 18:35:13,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:35:13,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:13,677 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:13,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:35:13,677 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:13,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:13,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1136515708, now seen corresponding path program 11 times [2020-10-14 18:35:13,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:13,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576745460] [2020-10-14 18:35:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:13,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:15,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:15,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 18:35:15,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-10-14 18:35:15,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:15,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:35:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 18:35:15,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:15,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:15,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:15,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:15,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:15,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:15,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:15,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:15,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:15,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:15,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:15,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:15,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:15,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:15,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:15,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:15,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:15,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:15,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:15,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:15,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 18:35:15,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 18:35:15,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:15,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:35:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 18:35:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:15,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:35:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:15,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:15,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:15,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:15,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:15,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:15,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:15,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:35:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:15,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:15,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:15,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:15,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:15,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:35:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:15,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:15,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:15,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:15,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:15,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:15,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:15,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:15,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:15,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:15,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:15,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 4 proven. 206 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:15,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576745460] [2020-10-14 18:35:15,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:15,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:35:15,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785873928] [2020-10-14 18:35:15,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:35:15,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:15,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:35:15,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:35:15,672 INFO L87 Difference]: Start difference. First operand 176 states and 243 transitions. Second operand 16 states. [2020-10-14 18:35:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:16,206 INFO L93 Difference]: Finished difference Result 344 states and 520 transitions. [2020-10-14 18:35:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:35:16,207 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-10-14 18:35:16,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:16,209 INFO L225 Difference]: With dead ends: 344 [2020-10-14 18:35:16,209 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 18:35:16,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:35:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 18:35:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 177. [2020-10-14 18:35:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 18:35:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 245 transitions. [2020-10-14 18:35:16,242 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 245 transitions. Word has length 90 [2020-10-14 18:35:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:16,242 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 245 transitions. [2020-10-14 18:35:16,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:35:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 245 transitions. [2020-10-14 18:35:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 18:35:16,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:16,244 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:16,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:35:16,244 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:16,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:16,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1108296172, now seen corresponding path program 12 times [2020-10-14 18:35:16,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:16,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041325825] [2020-10-14 18:35:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:17,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 18:35:17,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-14 18:35:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:17,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:35:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 18:35:17,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:17,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:17,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:17,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:17,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:17,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:17,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:17,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:17,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:17,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:17,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:17,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:17,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:17,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:17,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:17,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:17,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:17,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:17,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:17,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:17,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 18:35:17,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:17,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 18:35:17,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:17,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:35:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 18:35:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:35:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:17,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:17,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:17,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:17,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:17,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:17,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:17,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:35:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:17,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:17,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:17,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:17,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:17,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:17,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:17,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:35:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:17,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:17,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:17,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:17,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:17,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:17,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 4 proven. 230 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:17,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041325825] [2020-10-14 18:35:17,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:17,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:35:17,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920474648] [2020-10-14 18:35:17,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:35:17,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:17,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:35:17,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:35:17,417 INFO L87 Difference]: Start difference. First operand 177 states and 245 transitions. Second operand 16 states. [2020-10-14 18:35:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:17,842 INFO L93 Difference]: Finished difference Result 394 states and 601 transitions. [2020-10-14 18:35:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 18:35:17,843 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 91 [2020-10-14 18:35:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:17,846 INFO L225 Difference]: With dead ends: 394 [2020-10-14 18:35:17,846 INFO L226 Difference]: Without dead ends: 270 [2020-10-14 18:35:17,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:35:17,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-14 18:35:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 182. [2020-10-14 18:35:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 18:35:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 252 transitions. [2020-10-14 18:35:17,885 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 252 transitions. Word has length 91 [2020-10-14 18:35:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:17,886 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 252 transitions. [2020-10-14 18:35:17,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:35:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 252 transitions. [2020-10-14 18:35:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 18:35:17,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:17,889 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:17,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:35:17,889 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:17,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:17,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1771324683, now seen corresponding path program 12 times [2020-10-14 18:35:17,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:17,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451493629] [2020-10-14 18:35:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:18,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:19,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:19,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 18:35:19,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:19,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-10-14 18:35:19,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:19,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:35:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 18:35:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:19,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:19,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:19,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:19,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:19,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:19,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:19,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:19,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:19,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:19,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:19,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:19,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:19,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:19,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:19,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:19,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:19,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:19,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 18:35:19,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:19,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 18:35:19,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:19,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:35:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 18:35:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:19,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:35:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:19,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:19,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:19,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:19,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:35:19,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:19,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:19,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:19,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:19,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:35:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:19,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:19,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:19,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:19,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:19,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:19,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:19,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:35:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:19,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:19,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:19,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:19,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:19,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 4 proven. 242 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:19,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451493629] [2020-10-14 18:35:19,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:19,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:35:19,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591801965] [2020-10-14 18:35:19,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:35:19,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:19,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:35:19,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:35:19,617 INFO L87 Difference]: Start difference. First operand 182 states and 252 transitions. Second operand 17 states. [2020-10-14 18:35:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:21,460 INFO L93 Difference]: Finished difference Result 384 states and 575 transitions. [2020-10-14 18:35:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 18:35:21,461 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 93 [2020-10-14 18:35:21,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:21,463 INFO L225 Difference]: With dead ends: 384 [2020-10-14 18:35:21,463 INFO L226 Difference]: Without dead ends: 256 [2020-10-14 18:35:21,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:35:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-14 18:35:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 184. [2020-10-14 18:35:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 18:35:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 254 transitions. [2020-10-14 18:35:21,488 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 254 transitions. Word has length 93 [2020-10-14 18:35:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:21,489 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 254 transitions. [2020-10-14 18:35:21,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:35:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 254 transitions. [2020-10-14 18:35:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 18:35:21,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:21,491 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:21,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:35:21,491 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:21,491 INFO L82 PathProgramCache]: Analyzing trace with hash -687462083, now seen corresponding path program 13 times [2020-10-14 18:35:21,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:21,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739799719] [2020-10-14 18:35:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:21,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:22,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:22,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 18:35:22,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-14 18:35:22,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:22,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:35:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 18:35:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:22,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:22,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:22,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:22,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:22,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:22,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:22,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:22,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:22,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:22,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:22,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:22,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:22,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:22,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:22,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:22,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:22,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:22,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 18:35:22,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:22,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 18:35:22,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:22,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:35:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 18:35:22,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:22,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:35:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:22,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:22,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:22,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:22,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:22,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:22,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:22,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:22,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:22,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:35:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:22,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:22,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:22,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:22,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:22,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:35:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:22,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:22,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:22,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:22,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:22,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:22,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:22,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 4 proven. 268 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:22,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739799719] [2020-10-14 18:35:22,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:22,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:35:22,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816476836] [2020-10-14 18:35:22,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:35:22,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:22,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:35:22,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:35:22,465 INFO L87 Difference]: Start difference. First operand 184 states and 254 transitions. Second operand 17 states. [2020-10-14 18:35:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:22,967 INFO L93 Difference]: Finished difference Result 406 states and 622 transitions. [2020-10-14 18:35:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:35:22,975 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-10-14 18:35:22,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:22,979 INFO L225 Difference]: With dead ends: 406 [2020-10-14 18:35:22,979 INFO L226 Difference]: Without dead ends: 279 [2020-10-14 18:35:22,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:35:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-14 18:35:23,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 188. [2020-10-14 18:35:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-14 18:35:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 259 transitions. [2020-10-14 18:35:23,030 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 259 transitions. Word has length 94 [2020-10-14 18:35:23,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:23,031 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 259 transitions. [2020-10-14 18:35:23,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:35:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 259 transitions. [2020-10-14 18:35:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 18:35:23,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:23,032 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:23,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:35:23,033 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:23,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:23,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1670472676, now seen corresponding path program 13 times [2020-10-14 18:35:23,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:23,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521115284] [2020-10-14 18:35:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:23,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:23,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:23,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 18:35:23,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:23,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-10-14 18:35:23,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:23,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:35:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 18:35:23,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:23,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:23,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:23,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:23,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:23,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:23,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:23,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:23,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:23,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:23,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:23,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:23,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:23,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:23,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:23,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:23,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:23,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:23,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:24,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:24,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 18:35:24,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 18:35:24,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:24,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:35:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 18:35:24,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:24,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:35:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:24,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:24,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:24,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:24,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:24,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:24,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:24,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:24,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:35:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:24,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:24,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:24,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:24,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:24,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:24,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:24,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:35:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:24,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:24,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:24,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:24,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 4 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:24,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521115284] [2020-10-14 18:35:24,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:24,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:35:24,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668065028] [2020-10-14 18:35:24,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:35:24,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:24,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:35:24,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:35:24,560 INFO L87 Difference]: Start difference. First operand 188 states and 259 transitions. Second operand 18 states. [2020-10-14 18:35:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:26,559 INFO L93 Difference]: Finished difference Result 396 states and 593 transitions. [2020-10-14 18:35:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:35:26,560 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 96 [2020-10-14 18:35:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:26,563 INFO L225 Difference]: With dead ends: 396 [2020-10-14 18:35:26,563 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 18:35:26,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:35:26,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 18:35:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 190. [2020-10-14 18:35:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-14 18:35:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 262 transitions. [2020-10-14 18:35:26,589 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 262 transitions. Word has length 96 [2020-10-14 18:35:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:26,589 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 262 transitions. [2020-10-14 18:35:26,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:35:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 262 transitions. [2020-10-14 18:35:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 18:35:26,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:26,591 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:26,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:35:26,592 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:26,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash -8997812, now seen corresponding path program 14 times [2020-10-14 18:35:26,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:26,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966460462] [2020-10-14 18:35:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:26,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:27,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:27,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 18:35:27,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:27,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-10-14 18:35:27,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:27,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:35:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 18:35:27,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:27,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:27,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:27,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:27,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:27,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:27,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:27,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:27,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:27,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:27,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:27,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:27,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:27,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:27,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:27,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:27,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 18:35:27,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 18:35:27,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:27,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:35:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 18:35:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:27,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:35:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:27,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:27,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:27,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:27,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:27,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:27,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:27,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:27,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:27,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:35:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:27,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:27,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:27,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:27,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:27,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:27,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:27,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:35:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:27,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:27,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:27,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:27,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:27,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:27,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 4 proven. 309 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:27,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966460462] [2020-10-14 18:35:27,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:27,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:35:27,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145334679] [2020-10-14 18:35:27,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:35:27,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:27,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:35:27,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:35:27,940 INFO L87 Difference]: Start difference. First operand 190 states and 262 transitions. Second operand 18 states. [2020-10-14 18:35:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:28,516 INFO L93 Difference]: Finished difference Result 422 states and 648 transitions. [2020-10-14 18:35:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:35:28,518 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 97 [2020-10-14 18:35:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:28,521 INFO L225 Difference]: With dead ends: 422 [2020-10-14 18:35:28,521 INFO L226 Difference]: Without dead ends: 292 [2020-10-14 18:35:28,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:35:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-14 18:35:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 194. [2020-10-14 18:35:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 18:35:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 267 transitions. [2020-10-14 18:35:28,560 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 267 transitions. Word has length 97 [2020-10-14 18:35:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:28,560 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 267 transitions. [2020-10-14 18:35:28,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:35:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 267 transitions. [2020-10-14 18:35:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 18:35:28,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:28,562 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:28,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:35:28,563 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:28,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1793630059, now seen corresponding path program 14 times [2020-10-14 18:35:28,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:28,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245972140] [2020-10-14 18:35:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:29,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:29,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 18:35:29,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-10-14 18:35:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:29,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:35:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 18:35:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:29,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:29,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:29,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:29,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:29,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:29,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:29,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:29,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:29,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:29,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:29,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:29,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:29,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:29,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:29,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:35:29,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 18:35:29,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:29,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:35:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 18:35:29,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:30,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:35:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:30,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:30,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:30,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:30,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:30,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:30,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:35:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:30,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:30,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:30,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:30,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:30,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:30,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:30,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:30,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:35:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:30,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:30,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:30,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:30,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:30,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 4 proven. 323 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:30,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245972140] [2020-10-14 18:35:30,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:30,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:35:30,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105557221] [2020-10-14 18:35:30,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:35:30,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:30,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:35:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:35:30,071 INFO L87 Difference]: Start difference. First operand 194 states and 267 transitions. Second operand 19 states. [2020-10-14 18:35:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:30,771 INFO L93 Difference]: Finished difference Result 380 states and 577 transitions. [2020-10-14 18:35:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:35:30,773 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 99 [2020-10-14 18:35:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:30,775 INFO L225 Difference]: With dead ends: 380 [2020-10-14 18:35:30,775 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 18:35:30,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:35:30,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 18:35:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 195. [2020-10-14 18:35:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 18:35:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 269 transitions. [2020-10-14 18:35:30,800 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 269 transitions. Word has length 99 [2020-10-14 18:35:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:30,801 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 269 transitions. [2020-10-14 18:35:30,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:35:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 269 transitions. [2020-10-14 18:35:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 18:35:30,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:30,803 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:30,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:35:30,803 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:30,804 INFO L82 PathProgramCache]: Analyzing trace with hash 4004573, now seen corresponding path program 15 times [2020-10-14 18:35:30,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:30,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27902890] [2020-10-14 18:35:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:30,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:31,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:31,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 18:35:31,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:31,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-14 18:35:31,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:31,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:31,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:35:31,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:31,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 18:35:31,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:31,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:31,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:31,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:31,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:31,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:31,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:31,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:31,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:31,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:31,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:31,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:31,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 18:35:31,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 18:35:31,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:31,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:35:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 18:35:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:35:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:31,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:31,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:31,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:31,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:31,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:31,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:35:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:31,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:31,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:31,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:31,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:31,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:31,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:31,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:35:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:31,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:31,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:31,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 4 proven. 353 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:31,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27902890] [2020-10-14 18:35:31,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:31,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:35:31,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187447824] [2020-10-14 18:35:31,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:35:31,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:31,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:35:31,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:35:31,906 INFO L87 Difference]: Start difference. First operand 195 states and 269 transitions. Second operand 19 states. [2020-10-14 18:35:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:32,459 INFO L93 Difference]: Finished difference Result 442 states and 679 transitions. [2020-10-14 18:35:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 18:35:32,460 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-10-14 18:35:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:32,471 INFO L225 Difference]: With dead ends: 442 [2020-10-14 18:35:32,472 INFO L226 Difference]: Without dead ends: 309 [2020-10-14 18:35:32,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:35:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-14 18:35:32,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 200. [2020-10-14 18:35:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-14 18:35:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 276 transitions. [2020-10-14 18:35:32,513 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 276 transitions. Word has length 100 [2020-10-14 18:35:32,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:32,514 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 276 transitions. [2020-10-14 18:35:32,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:35:32,514 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 276 transitions. [2020-10-14 18:35:32,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 18:35:32,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:32,515 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:32,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:35:32,516 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:32,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:32,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1404020156, now seen corresponding path program 15 times [2020-10-14 18:35:32,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:32,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482835295] [2020-10-14 18:35:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:32,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:33,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:33,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 18:35:33,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:33,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-14 18:35:33,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:33,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:33,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:35:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 18:35:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:33,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:33,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:33,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:33,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:33,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:33,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:33,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:33,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:33,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:33,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:33,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:33,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:33,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:33,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:33,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:33,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:33,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:33,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:33,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:33,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 18:35:33,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:33,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 18:35:33,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:33,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:35:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 18:35:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:34,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:35:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:34,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:34,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:34,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:34,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:34,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:34,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:34,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:34,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:34,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:35:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:34,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:34,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:34,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:34,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:34,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:34,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:35:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:34,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:34,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:34,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:34,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:34,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:34,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:34,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 4 proven. 368 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:34,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482835295] [2020-10-14 18:35:34,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:34,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:35:34,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705226334] [2020-10-14 18:35:34,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:35:34,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:34,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:35:34,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:35:34,114 INFO L87 Difference]: Start difference. First operand 200 states and 276 transitions. Second operand 20 states. [2020-10-14 18:35:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:36,444 INFO L93 Difference]: Finished difference Result 423 states and 635 transitions. [2020-10-14 18:35:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 18:35:36,446 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 102 [2020-10-14 18:35:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:36,450 INFO L225 Difference]: With dead ends: 423 [2020-10-14 18:35:36,450 INFO L226 Difference]: Without dead ends: 286 [2020-10-14 18:35:36,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:35:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-14 18:35:36,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 202. [2020-10-14 18:35:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-14 18:35:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 278 transitions. [2020-10-14 18:35:36,477 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 278 transitions. Word has length 102 [2020-10-14 18:35:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:36,477 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 278 transitions. [2020-10-14 18:35:36,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:35:36,478 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 278 transitions. [2020-10-14 18:35:36,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 18:35:36,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:36,479 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:36,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 18:35:36,479 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:36,480 INFO L82 PathProgramCache]: Analyzing trace with hash 810999468, now seen corresponding path program 16 times [2020-10-14 18:35:36,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:36,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439391443] [2020-10-14 18:35:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:36,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:37,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:37,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 18:35:37,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:37,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-14 18:35:37,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:37,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:35:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 18:35:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:37,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:37,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:37,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:37,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:37,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:37,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:37,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:37,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:37,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:37,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:37,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:37,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:37,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:37,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:37,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:37,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:37,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:37,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:37,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:37,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 18:35:37,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 18:35:37,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:37,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:35:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 18:35:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:37,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:35:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:37,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:37,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:37,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:37,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:37,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:35:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:37,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:37,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:37,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:35:37,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:37,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:37,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:37,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:35:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:37,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:37,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:37,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:37,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:37,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:37,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:37,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:37,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:37,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 4 proven. 400 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:37,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439391443] [2020-10-14 18:35:37,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:37,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:35:37,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575961754] [2020-10-14 18:35:37,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:35:37,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:37,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:35:37,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:35:37,713 INFO L87 Difference]: Start difference. First operand 202 states and 278 transitions. Second operand 20 states. [2020-10-14 18:35:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:38,332 INFO L93 Difference]: Finished difference Result 454 states and 700 transitions. [2020-10-14 18:35:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:35:38,336 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2020-10-14 18:35:38,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:38,338 INFO L225 Difference]: With dead ends: 454 [2020-10-14 18:35:38,339 INFO L226 Difference]: Without dead ends: 318 [2020-10-14 18:35:38,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:35:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-14 18:35:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 206. [2020-10-14 18:35:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-14 18:35:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 283 transitions. [2020-10-14 18:35:38,368 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 283 transitions. Word has length 103 [2020-10-14 18:35:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:38,368 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 283 transitions. [2020-10-14 18:35:38,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:35:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 283 transitions. [2020-10-14 18:35:38,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 18:35:38,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:38,370 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:38,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 18:35:38,370 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:38,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:38,370 INFO L82 PathProgramCache]: Analyzing trace with hash -462966325, now seen corresponding path program 16 times [2020-10-14 18:35:38,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:38,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617490039] [2020-10-14 18:35:38,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:38,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:38,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:40,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:40,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 18:35:40,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:40,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1714 [2020-10-14 18:35:40,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:40,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:40,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:35:40,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:40,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 18:35:40,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:40,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:40,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:40,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:40,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:40,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:40,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:40,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:40,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:40,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:40,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:40,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:40,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:40,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:40,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:40,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:40,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:40,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 18:35:40,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:40,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 18:35:40,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:40,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:35:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 18:35:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:35:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:40,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:40,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:40,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:40,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:40,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:40,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:40,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:35:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:40,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:40,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:40,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:40,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:40,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:40,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:40,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:40,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:40,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:40,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:35:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:40,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:40,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:40,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:40,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:40,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 4 proven. 416 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:40,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617490039] [2020-10-14 18:35:40,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:40,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:35:40,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92373435] [2020-10-14 18:35:40,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:35:40,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:40,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:35:40,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:35:40,852 INFO L87 Difference]: Start difference. First operand 206 states and 283 transitions. Second operand 21 states. [2020-10-14 18:35:43,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:43,723 INFO L93 Difference]: Finished difference Result 435 states and 653 transitions. [2020-10-14 18:35:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 18:35:43,723 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 105 [2020-10-14 18:35:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:43,725 INFO L225 Difference]: With dead ends: 435 [2020-10-14 18:35:43,725 INFO L226 Difference]: Without dead ends: 296 [2020-10-14 18:35:43,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:35:43,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-14 18:35:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 208. [2020-10-14 18:35:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-14 18:35:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 286 transitions. [2020-10-14 18:35:43,751 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 286 transitions. Word has length 105 [2020-10-14 18:35:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:43,752 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 286 transitions. [2020-10-14 18:35:43,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:35:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 286 transitions. [2020-10-14 18:35:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 18:35:43,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:43,754 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:43,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 18:35:43,754 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:43,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:43,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1231006595, now seen corresponding path program 17 times [2020-10-14 18:35:43,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:43,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326357550] [2020-10-14 18:35:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:43,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:44,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:44,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 18:35:44,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-14 18:35:44,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:44,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:35:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 18:35:44,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:44,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:44,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:44,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:44,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:44,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:44,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:44,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:44,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:44,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:44,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:44,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:44,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:44,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:44,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:44,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:44,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:44,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 18:35:44,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 18:35:44,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:44,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:35:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 18:35:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:45,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:35:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:45,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:45,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:45,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:45,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:45,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:45,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:35:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:45,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:45,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:45,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:45,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:45,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:45,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:35:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:45,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:45,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:45,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:45,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:45,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:45,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:45,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 4 proven. 450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:45,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326357550] [2020-10-14 18:35:45,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:45,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:35:45,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091251515] [2020-10-14 18:35:45,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:35:45,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:45,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:35:45,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=211, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:35:45,141 INFO L87 Difference]: Start difference. First operand 208 states and 286 transitions. Second operand 21 states. [2020-10-14 18:35:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:45,328 INFO L93 Difference]: Finished difference Result 431 states and 647 transitions. [2020-10-14 18:35:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:35:45,329 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 106 [2020-10-14 18:35:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:45,331 INFO L225 Difference]: With dead ends: 431 [2020-10-14 18:35:45,331 INFO L226 Difference]: Without dead ends: 292 [2020-10-14 18:35:45,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=232, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:35:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-14 18:35:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 212. [2020-10-14 18:35:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-14 18:35:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 291 transitions. [2020-10-14 18:35:45,357 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 291 transitions. Word has length 106 [2020-10-14 18:35:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:45,357 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 291 transitions. [2020-10-14 18:35:45,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:35:45,357 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 291 transitions. [2020-10-14 18:35:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:35:45,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:45,359 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:45,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 18:35:45,359 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:45,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:45,359 INFO L82 PathProgramCache]: Analyzing trace with hash -30738596, now seen corresponding path program 17 times [2020-10-14 18:35:45,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:45,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370142309] [2020-10-14 18:35:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:45,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:45,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:46,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:46,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 18:35:46,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1208 [2020-10-14 18:35:46,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:46,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:35:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:35:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:46,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:46,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:46,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:46,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:46,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:46,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:46,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:46,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:46,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:46,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:46,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:46,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:46,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:46,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:46,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 18:35:46,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 18:35:46,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:46,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:35:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 18:35:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:47,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:35:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:47,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:47,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:47,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:47,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:47,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:47,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:35:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:47,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:47,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:47,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:47,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:47,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:47,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:47,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:47,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:35:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:47,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:47,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:47,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:47,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:47,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 4 proven. 467 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:47,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370142309] [2020-10-14 18:35:47,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:47,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:35:47,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226714697] [2020-10-14 18:35:47,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:35:47,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:47,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:35:47,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:35:47,552 INFO L87 Difference]: Start difference. First operand 212 states and 291 transitions. Second operand 22 states. [2020-10-14 18:35:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:50,703 INFO L93 Difference]: Finished difference Result 448 states and 673 transitions. [2020-10-14 18:35:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 18:35:50,704 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 108 [2020-10-14 18:35:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:50,708 INFO L225 Difference]: With dead ends: 448 [2020-10-14 18:35:50,708 INFO L226 Difference]: Without dead ends: 306 [2020-10-14 18:35:50,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:35:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-14 18:35:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 214. [2020-10-14 18:35:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-14 18:35:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 294 transitions. [2020-10-14 18:35:50,743 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 294 transitions. Word has length 108 [2020-10-14 18:35:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:50,743 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 294 transitions. [2020-10-14 18:35:50,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:35:50,743 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 294 transitions. [2020-10-14 18:35:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 18:35:50,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:50,745 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:50,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 18:35:50,745 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:50,746 INFO L82 PathProgramCache]: Analyzing trace with hash -716848884, now seen corresponding path program 18 times [2020-10-14 18:35:50,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:50,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111475403] [2020-10-14 18:35:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:50,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:51,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:51,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 18:35:51,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-10-14 18:35:51,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:51,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:35:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 18:35:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:51,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:51,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:51,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:51,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:51,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:51,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:51,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:51,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:51,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:51,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:51,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:51,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:51,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:51,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 18:35:51,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 18:35:51,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:51,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:35:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 18:35:51,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:52,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:35:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:52,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:52,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:52,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:35:52,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:52,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:52,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:52,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:35:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:52,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:52,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:52,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:52,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:52,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:52,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:52,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:52,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:35:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:52,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:52,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:52,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:52,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:52,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:52,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:52,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 4 proven. 503 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:52,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111475403] [2020-10-14 18:35:52,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:52,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:35:52,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315250515] [2020-10-14 18:35:52,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:35:52,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:52,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:35:52,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=232, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:35:52,294 INFO L87 Difference]: Start difference. First operand 214 states and 294 transitions. Second operand 22 states. [2020-10-14 18:35:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:52,527 INFO L93 Difference]: Finished difference Result 444 states and 667 transitions. [2020-10-14 18:35:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:35:52,528 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2020-10-14 18:35:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:52,530 INFO L225 Difference]: With dead ends: 444 [2020-10-14 18:35:52,530 INFO L226 Difference]: Without dead ends: 302 [2020-10-14 18:35:52,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=254, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:35:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-14 18:35:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 218. [2020-10-14 18:35:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-14 18:35:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 299 transitions. [2020-10-14 18:35:52,560 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 299 transitions. Word has length 109 [2020-10-14 18:35:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:52,560 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 299 transitions. [2020-10-14 18:35:52,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:35:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 299 transitions. [2020-10-14 18:35:52,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 18:35:52,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:52,561 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:52,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 18:35:52,562 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:52,562 INFO L82 PathProgramCache]: Analyzing trace with hash 153582635, now seen corresponding path program 18 times [2020-10-14 18:35:52,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:52,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878284361] [2020-10-14 18:35:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:55,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:55,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 18:35:55,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2721 [2020-10-14 18:35:55,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:55,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:35:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 18:35:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:55,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:55,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:55,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:55,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:55,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:55,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:55,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:55,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:55,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:55,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:55,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:55,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:55,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:55,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:55,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:55,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:55,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:55,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:55,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:55,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:55,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 18:35:55,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 18:35:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:55,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:35:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 18:35:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:56,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:35:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:56,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:56,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:56,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:56,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:56,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:56,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:35:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:56,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:56,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:56,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:35:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:56,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:35:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:56,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:56,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:35:56,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:56,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:56,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:56,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:56,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:56,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:35:56,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 4 proven. 521 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:35:56,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878284361] [2020-10-14 18:35:56,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:56,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:35:56,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891203457] [2020-10-14 18:35:56,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:35:56,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:56,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:35:56,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:35:56,292 INFO L87 Difference]: Start difference. First operand 218 states and 299 transitions. Second operand 23 states. [2020-10-14 18:35:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:57,464 INFO L93 Difference]: Finished difference Result 428 states and 653 transitions. [2020-10-14 18:35:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:35:57,465 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 111 [2020-10-14 18:35:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:57,467 INFO L225 Difference]: With dead ends: 428 [2020-10-14 18:35:57,467 INFO L226 Difference]: Without dead ends: 289 [2020-10-14 18:35:57,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:35:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-14 18:35:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 219. [2020-10-14 18:35:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 18:35:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 301 transitions. [2020-10-14 18:35:57,498 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 301 transitions. Word has length 111 [2020-10-14 18:35:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:57,498 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 301 transitions. [2020-10-14 18:35:57,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:35:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 301 transitions. [2020-10-14 18:35:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 18:35:57,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:57,500 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:57,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 18:35:57,500 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash 702141981, now seen corresponding path program 19 times [2020-10-14 18:35:57,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:57,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441657384] [2020-10-14 18:35:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 18:35:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:35:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-10-14 18:35:59,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:59,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:35:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:35:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 18:35:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:59,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:59,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:59,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:35:59,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:35:59,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:59,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:59,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:35:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:35:59,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:59,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:59,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:59,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:35:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:59,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:59,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 18:35:59,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:59,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 18:35:59,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:59,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:35:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:35:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 18:35:59,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:36:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:00,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:00,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:00,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:00,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:00,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:00,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:36:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:00,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:00,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:00,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:00,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:00,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:00,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:00,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:00,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 18:36:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:00,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:36:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:00,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 4 proven. 559 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:36:00,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441657384] [2020-10-14 18:36:00,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:00,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:36:00,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883318234] [2020-10-14 18:36:00,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:36:00,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:00,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:36:00,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:36:00,105 INFO L87 Difference]: Start difference. First operand 219 states and 301 transitions. Second operand 23 states. [2020-10-14 18:36:01,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:01,163 INFO L93 Difference]: Finished difference Result 506 states and 783 transitions. [2020-10-14 18:36:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 18:36:01,165 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 112 [2020-10-14 18:36:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:01,168 INFO L225 Difference]: With dead ends: 506 [2020-10-14 18:36:01,168 INFO L226 Difference]: Without dead ends: 361 [2020-10-14 18:36:01,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:36:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-14 18:36:01,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 224. [2020-10-14 18:36:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-14 18:36:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 308 transitions. [2020-10-14 18:36:01,207 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 308 transitions. Word has length 112 [2020-10-14 18:36:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:01,208 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 308 transitions. [2020-10-14 18:36:01,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:36:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 308 transitions. [2020-10-14 18:36:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 18:36:01,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:01,210 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:01,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 18:36:01,211 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:01,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1995796228, now seen corresponding path program 19 times [2020-10-14 18:36:01,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:01,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718068168] [2020-10-14 18:36:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:02,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:02,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 18:36:02,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:02,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1720 [2020-10-14 18:36:02,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:02,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:02,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:36:02,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:36:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 18:36:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:02,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:02,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:02,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:02,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:02,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:02,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:02,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:02,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:02,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:02,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:02,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:02,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:02,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:02,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:02,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:02,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:03,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:03,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:36:03,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 18:36:03,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:03,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:36:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 18:36:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:36:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:04,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:04,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:04,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:04,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:04,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:04,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:04,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:04,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:04,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:04,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:04,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:36:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:04,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:04,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:04,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:04,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:04,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:04,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:04,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:04,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:36:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:04,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:04,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:04,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:04,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:04,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:04,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 4 proven. 578 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:36:04,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718068168] [2020-10-14 18:36:04,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:04,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:36:04,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781427598] [2020-10-14 18:36:04,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:36:04,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:04,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:36:04,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:36:04,085 INFO L87 Difference]: Start difference. First operand 224 states and 308 transitions. Second operand 24 states. [2020-10-14 18:36:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:06,406 INFO L93 Difference]: Finished difference Result 475 states and 715 transitions. [2020-10-14 18:36:06,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 18:36:06,406 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 114 [2020-10-14 18:36:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:06,408 INFO L225 Difference]: With dead ends: 475 [2020-10-14 18:36:06,408 INFO L226 Difference]: Without dead ends: 326 [2020-10-14 18:36:06,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:36:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-14 18:36:06,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 226. [2020-10-14 18:36:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-14 18:36:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 310 transitions. [2020-10-14 18:36:06,439 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 310 transitions. Word has length 114 [2020-10-14 18:36:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:06,440 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 310 transitions. [2020-10-14 18:36:06,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:36:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 310 transitions. [2020-10-14 18:36:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 18:36:06,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:06,441 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:06,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 18:36:06,442 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:06,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1504093332, now seen corresponding path program 20 times [2020-10-14 18:36:06,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:06,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29231260] [2020-10-14 18:36:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:06,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:07,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:07,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 18:36:07,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 976 [2020-10-14 18:36:07,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:07,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:36:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:36:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 18:36:07,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:07,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:07,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:07,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:07,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:07,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:07,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:07,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:07,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:07,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:07,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:07,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:07,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:07,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:07,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 18:36:07,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 18:36:07,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:07,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:36:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 18:36:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:08,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:36:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:08,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:08,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:08,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:08,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:08,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:08,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:08,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:08,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:36:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:08,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:08,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:08,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:08,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:08,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:36:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:08,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:08,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:08,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:08,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 4 proven. 618 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:36:08,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29231260] [2020-10-14 18:36:08,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:08,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:36:08,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656409770] [2020-10-14 18:36:08,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:36:08,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:08,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:36:08,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:36:08,315 INFO L87 Difference]: Start difference. First operand 226 states and 310 transitions. Second operand 24 states. [2020-10-14 18:36:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:09,432 INFO L93 Difference]: Finished difference Result 518 states and 804 transitions. [2020-10-14 18:36:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 18:36:09,433 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 115 [2020-10-14 18:36:09,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:09,437 INFO L225 Difference]: With dead ends: 518 [2020-10-14 18:36:09,437 INFO L226 Difference]: Without dead ends: 370 [2020-10-14 18:36:09,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:36:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-14 18:36:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 230. [2020-10-14 18:36:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 18:36:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 315 transitions. [2020-10-14 18:36:09,474 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 315 transitions. Word has length 115 [2020-10-14 18:36:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:09,475 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 315 transitions. [2020-10-14 18:36:09,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:36:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 315 transitions. [2020-10-14 18:36:09,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 18:36:09,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:09,477 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:09,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 18:36:09,477 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:09,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:09,477 INFO L82 PathProgramCache]: Analyzing trace with hash -474087797, now seen corresponding path program 20 times [2020-10-14 18:36:09,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:09,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581299012] [2020-10-14 18:36:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:09,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:09,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:11,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:11,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 18:36:11,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:11,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-10-14 18:36:11,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:11,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:36:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:36:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 18:36:11,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:11,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:11,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:11,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:11,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:11,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:11,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:11,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:11,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:11,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:11,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:11,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:11,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:11,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 18:36:11,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-14 18:36:11,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:11,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:36:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 18:36:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:36:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:12,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:12,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:12,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:12,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:12,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:12,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:36:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:12,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:12,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:12,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:12,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:12,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:12,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:12,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:12,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:12,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:12,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:12,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 18:36:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:12,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:12,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:12,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:12,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:12,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:12,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 4 proven. 638 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:36:12,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581299012] [2020-10-14 18:36:12,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:12,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:36:12,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107532001] [2020-10-14 18:36:12,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:36:12,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:12,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:36:12,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:36:12,302 INFO L87 Difference]: Start difference. First operand 230 states and 315 transitions. Second operand 25 states. [2020-10-14 18:36:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:16,318 INFO L93 Difference]: Finished difference Result 487 states and 733 transitions. [2020-10-14 18:36:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 18:36:16,320 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 117 [2020-10-14 18:36:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:16,322 INFO L225 Difference]: With dead ends: 487 [2020-10-14 18:36:16,322 INFO L226 Difference]: Without dead ends: 336 [2020-10-14 18:36:16,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 18:36:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-14 18:36:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 232. [2020-10-14 18:36:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-14 18:36:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 318 transitions. [2020-10-14 18:36:16,356 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 318 transitions. Word has length 117 [2020-10-14 18:36:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:16,357 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 318 transitions. [2020-10-14 18:36:16,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:36:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 318 transitions. [2020-10-14 18:36:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 18:36:16,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:16,359 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:16,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 18:36:16,360 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1575772227, now seen corresponding path program 21 times [2020-10-14 18:36:16,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:16,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665567825] [2020-10-14 18:36:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:17,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:17,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 18:36:17,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:17,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1111 [2020-10-14 18:36:17,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:17,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:36:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:36:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 18:36:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:17,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:17,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:17,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:17,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:17,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:17,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:17,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:17,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:17,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:17,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:17,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:17,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:17,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:17,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:17,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:17,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:17,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:17,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:17,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:17,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 18:36:17,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 18:36:17,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:17,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:36:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 18:36:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:36:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:18,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:18,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:18,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:18,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:18,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:18,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:36:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:18,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:18,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:18,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:18,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:18,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:36:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:18,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:18,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:18,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:18,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:18,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 4 proven. 680 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:36:18,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665567825] [2020-10-14 18:36:18,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:18,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:36:18,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003094743] [2020-10-14 18:36:18,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:36:18,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:18,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:36:18,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:36:18,494 INFO L87 Difference]: Start difference. First operand 232 states and 318 transitions. Second operand 25 states. [2020-10-14 18:36:19,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:19,637 INFO L93 Difference]: Finished difference Result 534 states and 830 transitions. [2020-10-14 18:36:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 18:36:19,638 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 118 [2020-10-14 18:36:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:19,640 INFO L225 Difference]: With dead ends: 534 [2020-10-14 18:36:19,640 INFO L226 Difference]: Without dead ends: 383 [2020-10-14 18:36:19,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 18:36:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-14 18:36:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 236. [2020-10-14 18:36:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 18:36:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 323 transitions. [2020-10-14 18:36:19,688 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 323 transitions. Word has length 118 [2020-10-14 18:36:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:19,688 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 323 transitions. [2020-10-14 18:36:19,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:36:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 323 transitions. [2020-10-14 18:36:19,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 18:36:19,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:19,690 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:19,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 18:36:19,690 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:19,691 INFO L82 PathProgramCache]: Analyzing trace with hash -638029156, now seen corresponding path program 21 times [2020-10-14 18:36:19,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:19,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993343948] [2020-10-14 18:36:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:19,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:21,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:21,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 18:36:21,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1710 [2020-10-14 18:36:21,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:21,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:36:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:36:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 18:36:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:21,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:21,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:21,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:21,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:21,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:21,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:21,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:21,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:21,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:21,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:21,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:21,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:21,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:21,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:21,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 18:36:21,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-14 18:36:21,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:21,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:36:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 18:36:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:22,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:36:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:22,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:22,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:22,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:22,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:22,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:22,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:36:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:22,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:22,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:22,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:22,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:22,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:22,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:22,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 18:36:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:22,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:22,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:22,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:22,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:22,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 4 proven. 701 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:36:22,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993343948] [2020-10-14 18:36:22,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:22,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:36:22,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764730628] [2020-10-14 18:36:22,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:36:22,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:22,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:36:22,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:36:22,765 INFO L87 Difference]: Start difference. First operand 236 states and 323 transitions. Second operand 26 states. [2020-10-14 18:36:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:26,608 INFO L93 Difference]: Finished difference Result 500 states and 753 transitions. [2020-10-14 18:36:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 18:36:26,609 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 120 [2020-10-14 18:36:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:26,612 INFO L225 Difference]: With dead ends: 500 [2020-10-14 18:36:26,612 INFO L226 Difference]: Without dead ends: 346 [2020-10-14 18:36:26,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=207, Invalid=2145, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 18:36:26,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-14 18:36:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 238. [2020-10-14 18:36:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-14 18:36:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 326 transitions. [2020-10-14 18:36:26,644 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 326 transitions. Word has length 120 [2020-10-14 18:36:26,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:26,644 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 326 transitions. [2020-10-14 18:36:26,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:36:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 326 transitions. [2020-10-14 18:36:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 18:36:26,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:26,646 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:26,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 18:36:26,647 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:26,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:26,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1931980236, now seen corresponding path program 22 times [2020-10-14 18:36:26,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:26,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934768314] [2020-10-14 18:36:26,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:26,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:28,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:28,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 18:36:28,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:28,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1965 [2020-10-14 18:36:28,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:28,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:36:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:36:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 18:36:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:28,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:28,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:28,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:28,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:28,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:28,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:28,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:28,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:28,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:28,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:28,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:28,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 18:36:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 18:36:28,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:28,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:36:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:36:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:29,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:36:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:29,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:29,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:29,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:29,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:29,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:29,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:29,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:29,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:29,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:36:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:29,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:29,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:29,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:29,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:29,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:29,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:29,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:29,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 18:36:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:29,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:29,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:29,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:29,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:29,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 4 proven. 745 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:36:29,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934768314] [2020-10-14 18:36:29,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:29,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:36:29,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118405576] [2020-10-14 18:36:29,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:36:29,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:29,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:36:29,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:36:29,487 INFO L87 Difference]: Start difference. First operand 238 states and 326 transitions. Second operand 26 states. [2020-10-14 18:36:29,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:29,924 INFO L93 Difference]: Finished difference Result 496 states and 747 transitions. [2020-10-14 18:36:29,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:36:29,925 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 121 [2020-10-14 18:36:29,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:29,927 INFO L225 Difference]: With dead ends: 496 [2020-10-14 18:36:29,928 INFO L226 Difference]: Without dead ends: 342 [2020-10-14 18:36:29,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=350, Invalid=352, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:36:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-14 18:36:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 242. [2020-10-14 18:36:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-14 18:36:29,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 331 transitions. [2020-10-14 18:36:29,961 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 331 transitions. Word has length 121 [2020-10-14 18:36:29,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:29,961 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 331 transitions. [2020-10-14 18:36:29,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:36:29,961 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 331 transitions. [2020-10-14 18:36:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 18:36:29,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:29,963 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:29,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 18:36:29,963 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:29,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1237239573, now seen corresponding path program 22 times [2020-10-14 18:36:29,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:29,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269022027] [2020-10-14 18:36:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:32,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 18:36:32,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-14 18:36:32,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:32,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:32,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:36:32,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:36:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 18:36:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:32,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:32,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:32,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:32,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:32,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:32,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:32,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:32,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:32,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:32,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:32,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:32,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:32,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 18:36:32,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:32,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-14 18:36:32,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:32,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:36:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 18:36:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:33,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:36:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:33,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:33,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:33,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:33,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:33,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:33,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 18:36:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:33,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:33,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:33,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:33,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:33,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:36:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:33,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:33,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:33,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:33,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:33,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:33,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:33,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 4 proven. 767 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:36:33,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269022027] [2020-10-14 18:36:33,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:33,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:36:33,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520514280] [2020-10-14 18:36:33,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:36:33,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:33,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:36:33,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:36:33,563 INFO L87 Difference]: Start difference. First operand 242 states and 331 transitions. Second operand 27 states. [2020-10-14 18:36:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:38,279 INFO L93 Difference]: Finished difference Result 513 states and 773 transitions. [2020-10-14 18:36:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 18:36:38,280 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 123 [2020-10-14 18:36:38,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:38,283 INFO L225 Difference]: With dead ends: 513 [2020-10-14 18:36:38,283 INFO L226 Difference]: Without dead ends: 356 [2020-10-14 18:36:38,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 18:36:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-14 18:36:38,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 244. [2020-10-14 18:36:38,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-14 18:36:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 334 transitions. [2020-10-14 18:36:38,319 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 334 transitions. Word has length 123 [2020-10-14 18:36:38,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:38,320 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 334 transitions. [2020-10-14 18:36:38,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:36:38,320 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 334 transitions. [2020-10-14 18:36:38,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 18:36:38,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:38,322 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:38,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 18:36:38,322 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:38,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:38,322 INFO L82 PathProgramCache]: Analyzing trace with hash 536326493, now seen corresponding path program 23 times [2020-10-14 18:36:38,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:38,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384088694] [2020-10-14 18:36:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:38,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:40,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 18:36:40,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2103 [2020-10-14 18:36:40,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:40,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:36:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:36:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:36:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:40,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:40,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:40,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:40,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:40,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:40,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:40,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:40,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:40,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:40,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:40,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:40,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:40,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:40,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:40,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:40,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:40,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:40,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 18:36:40,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:40,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-14 18:36:40,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:40,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:36:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 18:36:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:41,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:36:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:41,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:41,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:41,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:41,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:41,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:41,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:41,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:36:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:41,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:41,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:41,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:41,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:36:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:41,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:41,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:41,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:36:41,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:41,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:41,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 4 proven. 813 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:36:41,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384088694] [2020-10-14 18:36:41,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:41,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:36:41,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763353871] [2020-10-14 18:36:41,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:36:41,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:41,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:36:41,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:36:41,781 INFO L87 Difference]: Start difference. First operand 244 states and 334 transitions. Second operand 27 states. [2020-10-14 18:36:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:43,499 INFO L93 Difference]: Finished difference Result 566 states and 882 transitions. [2020-10-14 18:36:43,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 18:36:43,500 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 124 [2020-10-14 18:36:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:43,505 INFO L225 Difference]: With dead ends: 566 [2020-10-14 18:36:43,505 INFO L226 Difference]: Without dead ends: 409 [2020-10-14 18:36:43,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 18:36:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-14 18:36:43,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 248. [2020-10-14 18:36:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-14 18:36:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 339 transitions. [2020-10-14 18:36:43,558 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 339 transitions. Word has length 124 [2020-10-14 18:36:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:43,559 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 339 transitions. [2020-10-14 18:36:43,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:36:43,560 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 339 transitions. [2020-10-14 18:36:43,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 18:36:43,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:43,561 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:43,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 18:36:43,562 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:43,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:43,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1864277052, now seen corresponding path program 23 times [2020-10-14 18:36:43,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:43,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146000800] [2020-10-14 18:36:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:43,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:43,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 18:36:43,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:43,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 18:36:43,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:43,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:36:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 18:36:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:36:43,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:43,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:43,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:43,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:43,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:43,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:43,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:36:43,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:43,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:43,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:43,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:43,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:43,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:43,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:43,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:43,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:43,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 18:36:43,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:43,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 18:36:43,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:43,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:43,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:36:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:43,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:43,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:43,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:43,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:43,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:43,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:43,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 18:36:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:43,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:43,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:43,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:43,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:43,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:43,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:43,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:43,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:43,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:43,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:43,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:36:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:43,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:43,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:43,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:43,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:43,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:43,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2020-10-14 18:36:43,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146000800] [2020-10-14 18:36:43,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:36:43,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 18:36:43,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449683883] [2020-10-14 18:36:43,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:36:43,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:43,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:36:43,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:36:43,830 INFO L87 Difference]: Start difference. First operand 248 states and 339 transitions. Second operand 6 states. [2020-10-14 18:36:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:43,901 INFO L93 Difference]: Finished difference Result 254 states and 344 transitions. [2020-10-14 18:36:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:36:43,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-10-14 18:36:43,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:43,905 INFO L225 Difference]: With dead ends: 254 [2020-10-14 18:36:43,905 INFO L226 Difference]: Without dead ends: 248 [2020-10-14 18:36:43,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:36:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-14 18:36:43,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2020-10-14 18:36:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-14 18:36:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 338 transitions. [2020-10-14 18:36:43,934 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 338 transitions. Word has length 126 [2020-10-14 18:36:43,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:43,935 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 338 transitions. [2020-10-14 18:36:43,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:36:43,936 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 338 transitions. [2020-10-14 18:36:43,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 18:36:43,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:43,937 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:43,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 18:36:43,937 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:43,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:43,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1807018750, now seen corresponding path program 1 times [2020-10-14 18:36:43,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:43,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781952404] [2020-10-14 18:36:43,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:44,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:44,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 18:36:44,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:44,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 18:36:44,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:44,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:36:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 18:36:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:36:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:44,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:44,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:44,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:44,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:44,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:44,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:44,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:44,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:44,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:44,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:44,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:44,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:44,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:44,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 18:36:44,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 18:36:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:44,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:36:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:44,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:44,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:44,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:44,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 18:36:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:44,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:44,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:44,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:44,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:44,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:44,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:36:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:44,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:44,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:44,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:44,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:44,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:36:44,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:44,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:36:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:36:44,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2020-10-14 18:36:44,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781952404] [2020-10-14 18:36:44,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:36:44,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 18:36:44,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585202451] [2020-10-14 18:36:44,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:36:44,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:44,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:36:44,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:36:44,248 INFO L87 Difference]: Start difference. First operand 248 states and 338 transitions. Second operand 6 states. [2020-10-14 18:36:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:44,311 INFO L93 Difference]: Finished difference Result 265 states and 356 transitions. [2020-10-14 18:36:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:36:44,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-10-14 18:36:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:44,315 INFO L225 Difference]: With dead ends: 265 [2020-10-14 18:36:44,315 INFO L226 Difference]: Without dead ends: 250 [2020-10-14 18:36:44,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:36:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-14 18:36:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2020-10-14 18:36:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-14 18:36:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 334 transitions. [2020-10-14 18:36:44,340 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 334 transitions. Word has length 126 [2020-10-14 18:36:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:44,340 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 334 transitions. [2020-10-14 18:36:44,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:36:44,340 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 334 transitions. [2020-10-14 18:36:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 18:36:44,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:44,342 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:44,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 18:36:44,342 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash 273720313, now seen corresponding path program 1 times [2020-10-14 18:36:44,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:44,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782102201] [2020-10-14 18:36:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:47,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:47,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 18:36:47,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:47,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2689 [2020-10-14 18:36:47,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:47,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:47,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:36:47,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:36:47,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 18:36:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:47,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:47,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:47,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:47,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:47,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:47,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:47,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:47,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:47,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:47,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:47,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:47,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:47,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:36:47,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:47,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:47,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:36:47,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:47,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:36:47,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:47,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:47,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:47,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 18:36:47,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 18:36:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:47,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:36:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 18:36:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:47,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:36:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:47,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:47,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:47,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:47,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:36:47,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:47,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:36:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:36:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:47,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 18:36:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:47,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:47,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:36:47,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:47,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:36:47,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:47,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:47,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:36:47,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:47,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:36:47,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:47,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:36:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:47,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:47,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 18:36:47,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:47,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 18:36:47,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:47,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:36:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 18:36:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2020-10-14 18:36:47,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782102201] [2020-10-14 18:36:47,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:47,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:36:47,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491880868] [2020-10-14 18:36:47,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:36:47,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:47,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:36:47,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:36:47,378 INFO L87 Difference]: Start difference. First operand 249 states and 334 transitions. Second operand 10 states. [2020-10-14 18:36:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:47,682 INFO L93 Difference]: Finished difference Result 277 states and 367 transitions. [2020-10-14 18:36:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:36:47,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 131 [2020-10-14 18:36:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:47,685 INFO L225 Difference]: With dead ends: 277 [2020-10-14 18:36:47,685 INFO L226 Difference]: Without dead ends: 267 [2020-10-14 18:36:47,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:36:47,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-14 18:36:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 258. [2020-10-14 18:36:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-14 18:36:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 348 transitions. [2020-10-14 18:36:47,730 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 348 transitions. Word has length 131 [2020-10-14 18:36:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:47,731 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 348 transitions. [2020-10-14 18:36:47,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:36:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 348 transitions. [2020-10-14 18:36:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 18:36:47,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:47,733 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:47,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 18:36:47,733 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:47,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:47,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1006143365, now seen corresponding path program 1 times [2020-10-14 18:36:47,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:47,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94430688] [2020-10-14 18:36:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:47,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:52,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:52,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 18:36:52,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:36:52,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:36:52,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:52,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:36:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:36:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 18:36:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:52,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:52,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:52,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:52,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:52,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:52,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:52,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:52,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:52,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:52,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:52,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:36:52,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:52,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:36:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:36:52,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:52,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:36:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:52,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:52,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:52,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 18:36:52,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 18:36:52,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:52,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:36:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 18:36:52,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:36:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:52,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:52,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:52,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:36:52,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:52,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:36:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:36:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 18:36:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:52,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:52,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:36:52,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:36:52,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:52,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:52,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:36:52,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:36:52,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:52,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:36:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:53,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:53,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 18:36:53,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:53,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 18:36:53,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:53,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:36:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 18:36:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2020-10-14 18:36:53,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94430688] [2020-10-14 18:36:53,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:53,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:36:53,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660804888] [2020-10-14 18:36:53,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:36:53,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:53,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:36:53,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:36:53,137 INFO L87 Difference]: Start difference. First operand 258 states and 348 transitions. Second operand 10 states. [2020-10-14 18:36:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:53,482 INFO L93 Difference]: Finished difference Result 271 states and 360 transitions. [2020-10-14 18:36:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:36:53,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 131 [2020-10-14 18:36:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:53,485 INFO L225 Difference]: With dead ends: 271 [2020-10-14 18:36:53,486 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 18:36:53,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:36:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 18:36:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 227. [2020-10-14 18:36:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-14 18:36:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 299 transitions. [2020-10-14 18:36:53,528 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 299 transitions. Word has length 131 [2020-10-14 18:36:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:53,528 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 299 transitions. [2020-10-14 18:36:53,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:36:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 299 transitions. [2020-10-14 18:36:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 18:36:53,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:36:53,530 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 46, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:36:53,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 18:36:53,530 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:36:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:36:53,531 INFO L82 PathProgramCache]: Analyzing trace with hash -468087865, now seen corresponding path program 1 times [2020-10-14 18:36:53,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:36:53,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782274792] [2020-10-14 18:36:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:36:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:53,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:57,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:57,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 18:36:57,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:36:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3782 [2020-10-14 18:36:57,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:57,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 18:36:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:36:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 18:36:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:36:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:57,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:57,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:57,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:36:57,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:36:57,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:57,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:36:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:57,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:36:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:57,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:57,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:57,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 18:36:57,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:36:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-14 18:36:57,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:57,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:36:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:36:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 18:36:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:36:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:58,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:58,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 18:36:58,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:58,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 18:36:58,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:58,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 18:36:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:58,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 18:36:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:58,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:58,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:58,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:58,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:58,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:58,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:58,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:58,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:58,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-14 18:36:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:58,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:58,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:58,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:36:58,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:58,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:36:58,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:58,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 18:36:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:58,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:58,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-14 18:36:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:36:58,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:36:58,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:36:58,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 18:36:58,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:36:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:36:58,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:36:58,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:36:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:36:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 18:36:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:36:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:36:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 0 proven. 1742 refuted. 0 times theorem prover too weak. 1674 trivial. 0 not checked. [2020-10-14 18:36:58,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782274792] [2020-10-14 18:36:58,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:36:58,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 18:36:58,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113888021] [2020-10-14 18:36:58,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:36:58,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:36:58,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:36:58,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:36:58,080 INFO L87 Difference]: Start difference. First operand 227 states and 299 transitions. Second operand 4 states. [2020-10-14 18:36:58,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:36:58,180 INFO L93 Difference]: Finished difference Result 230 states and 301 transitions. [2020-10-14 18:36:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:36:58,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2020-10-14 18:36:58,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:36:58,182 INFO L225 Difference]: With dead ends: 230 [2020-10-14 18:36:58,182 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 18:36:58,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 18:36:58,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 18:36:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 18:36:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 18:36:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 18:36:58,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 196 [2020-10-14 18:36:58,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:36:58,186 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 18:36:58,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:36:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 18:36:58,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 18:36:58,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 18:36:58,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 18:37:00,944 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 301 DAG size of output: 261 [2020-10-14 18:37:04,995 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 432 DAG size of output: 379 [2020-10-14 18:37:05,314 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 141 [2020-10-14 18:37:24,372 WARN L193 SmtUtils]: Spent 19.01 s on a formula simplification. DAG size of input: 761 DAG size of output: 675 [2020-10-14 18:37:55,193 WARN L193 SmtUtils]: Spent 30.71 s on a formula simplification. DAG size of input: 861 DAG size of output: 774