/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:53:36,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:53:36,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:53:36,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:53:36,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:53:36,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:53:36,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:53:36,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:53:36,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:53:36,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:53:36,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:53:36,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:53:36,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:53:36,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:53:36,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:53:36,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:53:36,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:53:36,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:53:36,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:53:36,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:53:36,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:53:36,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:53:36,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:53:36,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:53:36,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:53:36,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:53:36,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:53:36,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:53:36,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:53:36,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:53:36,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:53:36,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:53:36,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:53:36,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:53:36,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:53:36,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:53:36,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:53:36,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:53:36,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:53:36,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:53:36,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:53:36,922 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 [2020-09-25 06:53:36,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:53:36,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:53:36,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:53:36,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:53:36,967 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:53:36,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:53:36,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:53:36,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:53:36,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:53:36,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:53:36,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:53:36,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:53:36,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:53:36,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:53:36,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:53:36,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:53:36,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:53:36,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:53:36,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:53:36,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:53:36,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:53:36,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:53:36,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:53:36,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:53:36,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:53:36,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:53:36,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:53:36,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:53:36,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:53:36,973 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:53:37,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:53:37,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:53:37,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:53:37,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:53:37,492 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:53:37,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-25 06:53:37,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af38b762a/a5d113a18f40499e88d435e6b0a4900d/FLAG8c3ecd5f7 [2020-09-25 06:53:38,153 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:53:38,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-25 06:53:38,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af38b762a/a5d113a18f40499e88d435e6b0a4900d/FLAG8c3ecd5f7 [2020-09-25 06:53:38,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af38b762a/a5d113a18f40499e88d435e6b0a4900d [2020-09-25 06:53:38,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:53:38,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:53:38,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:53:38,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:53:38,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:53:38,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:53:38" (1/1) ... [2020-09-25 06:53:38,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f7f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38, skipping insertion in model container [2020-09-25 06:53:38,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:53:38" (1/1) ... [2020-09-25 06:53:38,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:53:38,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:53:38,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:53:38,774 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:53:38,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:53:38,816 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:53:38,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38 WrapperNode [2020-09-25 06:53:38,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:53:38,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:53:38,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:53:38,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:53:38,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38" (1/1) ... [2020-09-25 06:53:38,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38" (1/1) ... [2020-09-25 06:53:38,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38" (1/1) ... [2020-09-25 06:53:38,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38" (1/1) ... [2020-09-25 06:53:38,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38" (1/1) ... [2020-09-25 06:53:38,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38" (1/1) ... [2020-09-25 06:53:38,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38" (1/1) ... [2020-09-25 06:53:38,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:53:38,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:53:38,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:53:38,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:53:38,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38" (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 [2020-09-25 06:53:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:53:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:53:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 06:53:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 06:53:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:53:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:53:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:53:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 06:53:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 06:53:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:53:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:53:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:53:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:53:39,327 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:53:39,328 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:53:39,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:53:39 BoogieIcfgContainer [2020-09-25 06:53:39,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:53:39,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:53:39,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:53:39,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:53:39,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:53:38" (1/3) ... [2020-09-25 06:53:39,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16192c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:53:39, skipping insertion in model container [2020-09-25 06:53:39,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:38" (2/3) ... [2020-09-25 06:53:39,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16192c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:53:39, skipping insertion in model container [2020-09-25 06:53:39,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:53:39" (3/3) ... [2020-09-25 06:53:39,347 INFO L109 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-09-25 06:53:39,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:53:39,372 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:53:39,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:53:39,432 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:53:39,433 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:53:39,433 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:53:39,433 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:53:39,433 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:53:39,433 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:53:39,434 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:53:39,434 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:53:39,461 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-25 06:53:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 06:53:39,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:39,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:39,478 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:39,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1122321079, now seen corresponding path program 1 times [2020-09-25 06:53:39,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:39,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834854917] [2020-09-25 06:53:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:39,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:39,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:39,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:53:39,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:39,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 06:53:39,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:39,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 06:53:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:53:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:39,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:39,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:39,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:39,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:53:39,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:39,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:39,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:53:39,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834854917] [2020-09-25 06:53:39,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:39,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 06:53:39,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299512126] [2020-09-25 06:53:39,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 06:53:39,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:39,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 06:53:39,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 06:53:39,933 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-09-25 06:53:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:39,970 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2020-09-25 06:53:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 06:53:39,972 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-09-25 06:53:39,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:39,985 INFO L225 Difference]: With dead ends: 91 [2020-09-25 06:53:39,985 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 06:53:39,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 06:53:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 06:53:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-25 06:53:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 06:53:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-09-25 06:53:40,050 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 24 [2020-09-25 06:53:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:40,051 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-09-25 06:53:40,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 06:53:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-09-25 06:53:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 06:53:40,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:40,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:40,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:53:40,054 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1949391841, now seen corresponding path program 1 times [2020-09-25 06:53:40,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:40,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678177453] [2020-09-25 06:53:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:40,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:40,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:53:40,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:40,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 06:53:40,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:40,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:53:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:53:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:53:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:40,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:40,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:40,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:40,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:40,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:40,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:53:40,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:40,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:40,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:53:40,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678177453] [2020-09-25 06:53:40,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:40,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:53:40,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818230739] [2020-09-25 06:53:40,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:53:40,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:40,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:53:40,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:53:40,300 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 5 states. [2020-09-25 06:53:40,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:40,418 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-09-25 06:53:40,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:53:40,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-09-25 06:53:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:40,422 INFO L225 Difference]: With dead ends: 66 [2020-09-25 06:53:40,422 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 06:53:40,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:53:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 06:53:40,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-25 06:53:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 06:53:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-09-25 06:53:40,455 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 26 [2020-09-25 06:53:40,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:40,455 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-09-25 06:53:40,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:53:40,459 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-09-25 06:53:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 06:53:40,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:40,460 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:53:40,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:53:40,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:40,464 INFO L82 PathProgramCache]: Analyzing trace with hash -873076999, now seen corresponding path program 1 times [2020-09-25 06:53:40,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:40,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672698708] [2020-09-25 06:53:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:40,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:40,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:40,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 06:53:40,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 06:53:40,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:40,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:53:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:53:40,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:40,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:40,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:40,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:40,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:53:40,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:40,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:40,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:40,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 06:53:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:40,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:40,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:40,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:53:40,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:40,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:40,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:53:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:53:40,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672698708] [2020-09-25 06:53:40,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:40,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:53:40,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186458640] [2020-09-25 06:53:40,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:53:40,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:40,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:53:40,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:53:40,770 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2020-09-25 06:53:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:40,931 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-09-25 06:53:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:53:40,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-25 06:53:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:40,934 INFO L225 Difference]: With dead ends: 70 [2020-09-25 06:53:40,934 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 06:53:40,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:53:40,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 06:53:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-09-25 06:53:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 06:53:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2020-09-25 06:53:40,953 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 31 [2020-09-25 06:53:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:40,954 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2020-09-25 06:53:40,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:53:40,955 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2020-09-25 06:53:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 06:53:40,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:40,957 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:53:40,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:53:40,958 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:40,958 INFO L82 PathProgramCache]: Analyzing trace with hash 2057902492, now seen corresponding path program 1 times [2020-09-25 06:53:40,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:40,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457058309] [2020-09-25 06:53:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:40,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 06:53:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-25 06:53:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:41,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:53:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:53:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:53:41,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:41,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:41,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:41,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:41,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:41,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:53:41,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:41,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 06:53:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:41,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:41,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:41,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:41,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:41,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:53:41,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:41,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:53:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:41,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:41,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:41,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:53:41,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:41,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:53:41,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457058309] [2020-09-25 06:53:41,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:41,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:53:41,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692588930] [2020-09-25 06:53:41,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:53:41,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:41,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:53:41,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:53:41,533 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 7 states. [2020-09-25 06:53:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:41,689 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-09-25 06:53:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:53:41,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-09-25 06:53:41,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:41,692 INFO L225 Difference]: With dead ends: 77 [2020-09-25 06:53:41,692 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 06:53:41,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:53:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 06:53:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-09-25 06:53:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 06:53:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2020-09-25 06:53:41,706 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 39 [2020-09-25 06:53:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:41,707 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-09-25 06:53:41,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:53:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2020-09-25 06:53:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 06:53:41,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:41,709 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:53:41,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:53:41,709 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:41,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:41,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1847294180, now seen corresponding path program 1 times [2020-09-25 06:53:41,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:41,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839391716] [2020-09-25 06:53:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:41,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:41,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 06:53:41,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 06:53:41,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:41,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:53:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:53:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:41,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:41,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:41,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:41,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:53:41,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:41,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:41,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 06:53:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:41,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:41,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:41,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:41,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:41,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:53:41,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:41,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:41,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:41,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:41,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:41,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:41,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:53:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:53:42,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:42,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:53:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:53:42,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 06:53:42,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839391716] [2020-09-25 06:53:42,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:42,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:53:42,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967968954] [2020-09-25 06:53:42,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:53:42,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:42,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:53:42,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:53:42,038 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 8 states. [2020-09-25 06:53:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:42,250 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-09-25 06:53:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:53:42,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-09-25 06:53:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:42,252 INFO L225 Difference]: With dead ends: 81 [2020-09-25 06:53:42,252 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 06:53:42,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:53:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 06:53:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-25 06:53:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 06:53:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-09-25 06:53:42,262 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 44 [2020-09-25 06:53:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:42,263 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-09-25 06:53:42,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:53:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-09-25 06:53:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 06:53:42,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:42,265 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:53:42,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:53:42,265 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:42,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:42,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1076854334, now seen corresponding path program 1 times [2020-09-25 06:53:42,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:42,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856319207] [2020-09-25 06:53:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:53:42,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 06:53:42,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:53:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:53:42,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:42,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:42,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:42,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:42,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:53:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:42,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:42,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:53:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:42,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:42,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:42,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:42,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:42,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:42,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:53:42,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856319207] [2020-09-25 06:53:42,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:42,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:53:42,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565479492] [2020-09-25 06:53:42,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:53:42,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:53:42,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:53:42,476 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 6 states. [2020-09-25 06:53:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:42,534 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-09-25 06:53:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:53:42,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-25 06:53:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:42,538 INFO L225 Difference]: With dead ends: 67 [2020-09-25 06:53:42,539 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 06:53:42,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:53:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 06:53:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 06:53:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 06:53:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-09-25 06:53:42,548 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 43 [2020-09-25 06:53:42,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:42,548 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-09-25 06:53:42,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:53:42,549 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-09-25 06:53:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 06:53:42,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:42,550 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:53:42,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:53:42,551 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:42,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:42,551 INFO L82 PathProgramCache]: Analyzing trace with hash 146364602, now seen corresponding path program 1 times [2020-09-25 06:53:42,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:42,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004470547] [2020-09-25 06:53:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:42,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:42,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:43,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:43,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 06:53:43,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-09-25 06:53:43,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:43,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:53:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:53:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:43,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:43,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:53:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:43,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:43,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:53:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:43,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:43,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:43,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:53:43,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:43,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:43,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:43,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:53:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:43,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:43,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:43,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:53:43,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:43,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:43,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:53:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:43,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:43,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:43,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:43,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:43,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:43,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:43,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 06:53:43,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004470547] [2020-09-25 06:53:43,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:43,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 06:53:43,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704581746] [2020-09-25 06:53:43,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:53:43,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:43,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:53:43,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:53:43,422 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 9 states. [2020-09-25 06:53:43,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:43,684 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-09-25 06:53:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:53:43,685 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-25 06:53:43,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:43,686 INFO L225 Difference]: With dead ends: 98 [2020-09-25 06:53:43,687 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 06:53:43,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:53:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 06:53:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2020-09-25 06:53:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 06:53:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-09-25 06:53:43,706 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 48 [2020-09-25 06:53:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:43,708 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-09-25 06:53:43,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:53:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-09-25 06:53:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 06:53:43,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:43,712 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-09-25 06:53:43,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:53:43,712 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:43,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:43,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1943579560, now seen corresponding path program 1 times [2020-09-25 06:53:43,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:43,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855026462] [2020-09-25 06:53:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 06:53:44,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:44,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-25 06:53:44,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:44,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:53:44,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:53:44,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:44,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:44,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:44,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:53:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:44,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:44,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:53:44,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:44,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:44,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:53:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:44,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:53:44,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:53:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:44,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:53:44,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:44,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:53:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:44,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:44,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 06:53:44,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855026462] [2020-09-25 06:53:44,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:44,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:53:44,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421514627] [2020-09-25 06:53:44,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:53:44,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:44,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:53:44,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:53:44,281 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 7 states. [2020-09-25 06:53:44,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:44,425 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-09-25 06:53:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:53:44,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 06:53:44,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:44,427 INFO L225 Difference]: With dead ends: 83 [2020-09-25 06:53:44,427 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 06:53:44,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:53:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 06:53:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 06:53:44,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 06:53:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-09-25 06:53:44,437 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 56 [2020-09-25 06:53:44,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:44,437 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-09-25 06:53:44,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:53:44,437 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-09-25 06:53:44,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 06:53:44,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:44,439 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2020-09-25 06:53:44,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:53:44,439 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:44,439 INFO L82 PathProgramCache]: Analyzing trace with hash 903884048, now seen corresponding path program 1 times [2020-09-25 06:53:44,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:44,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517781002] [2020-09-25 06:53:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:53:44,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 06:53:44,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:53:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 06:53:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:44,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:53:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:44,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:53:44,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:53:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:44,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:44,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:44,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:53:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:44,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:53:44,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:44,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:53:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:44,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:53:44,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:44,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 06:53:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:44,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:44,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:44,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:44,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:44,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:44,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:44,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 06:53:44,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517781002] [2020-09-25 06:53:44,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:44,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:53:44,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952311925] [2020-09-25 06:53:44,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:53:44,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:44,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:53:44,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:53:44,805 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 8 states. [2020-09-25 06:53:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:45,023 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-09-25 06:53:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:53:45,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-25 06:53:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:45,026 INFO L225 Difference]: With dead ends: 100 [2020-09-25 06:53:45,026 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 06:53:45,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:53:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 06:53:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-09-25 06:53:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 06:53:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2020-09-25 06:53:45,036 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 61 [2020-09-25 06:53:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:45,037 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2020-09-25 06:53:45,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:53:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2020-09-25 06:53:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:53:45,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:45,038 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1] [2020-09-25 06:53:45,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:53:45,039 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:45,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1662212275, now seen corresponding path program 1 times [2020-09-25 06:53:45,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:45,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993484908] [2020-09-25 06:53:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:46,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:46,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:53:46,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:46,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1766 [2020-09-25 06:53:46,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:46,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:53:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:53:46,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:53:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:46,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:46,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:46,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:46,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:46,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:46,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:46,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:46,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:46,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:53:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:46,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:46,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:46,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:46,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:46,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:46,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:46,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:53:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:46,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:46,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:46,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:46,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:53:46,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:46,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:46,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:46,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:53:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:46,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:46,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:46,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:46,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:46,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:46,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:53:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:46,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:46,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:46,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:46,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:46,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:46,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:46,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:46,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:46,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 06:53:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:46,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:46,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:46,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:46,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:46,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:46,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:46,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:46,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 06:53:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:46,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:46,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:46,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:46,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:53:46,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:46,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 06:53:46,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993484908] [2020-09-25 06:53:46,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:46,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 06:53:46,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646559417] [2020-09-25 06:53:46,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:53:46,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:46,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:53:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:53:46,996 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand 9 states. [2020-09-25 06:53:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:47,178 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2020-09-25 06:53:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:53:47,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 06:53:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:47,180 INFO L225 Difference]: With dead ends: 100 [2020-09-25 06:53:47,180 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 06:53:47,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:53:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 06:53:47,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-25 06:53:47,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 06:53:47,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-09-25 06:53:47,189 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 69 [2020-09-25 06:53:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:47,190 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-09-25 06:53:47,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:53:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-09-25 06:53:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 06:53:47,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:47,191 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:47,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:53:47,191 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:47,192 INFO L82 PathProgramCache]: Analyzing trace with hash 71900773, now seen corresponding path program 1 times [2020-09-25 06:53:47,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:47,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148414914] [2020-09-25 06:53:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:47,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 06:53:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-09-25 06:53:48,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:53:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:53:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:48,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:48,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:48,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:53:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:53:48,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:53:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:53:48,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:48,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:53:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:53:48,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:53:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:53:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 06:53:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:53:48,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 06:53:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:53:48,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 06:53:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:48,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:48,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:48,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:53:48,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:48,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 06:53:49,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148414914] [2020-09-25 06:53:49,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:49,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:53:49,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963498624] [2020-09-25 06:53:49,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:53:49,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:49,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:53:49,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:53:49,013 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 12 states. [2020-09-25 06:53:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:49,322 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-09-25 06:53:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:53:49,323 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-09-25 06:53:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:49,324 INFO L225 Difference]: With dead ends: 111 [2020-09-25 06:53:49,324 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 06:53:49,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:53:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 06:53:49,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-25 06:53:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 06:53:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2020-09-25 06:53:49,336 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 74 [2020-09-25 06:53:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:49,336 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2020-09-25 06:53:49,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:53:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2020-09-25 06:53:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 06:53:49,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:49,343 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:53:49,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:53:49,343 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:49,344 INFO L82 PathProgramCache]: Analyzing trace with hash -50388093, now seen corresponding path program 1 times [2020-09-25 06:53:49,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:49,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615637212] [2020-09-25 06:53:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:49,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:49,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:49,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:51,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:53:51,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:53:51,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-09-25 06:53:51,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:51,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:53:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:53:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:51,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:51,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:51,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:51,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:51,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:51,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:51,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:53:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:51,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:51,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:51,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:53:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:51,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:51,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:51,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:51,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:51,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:53:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:51,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:51,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:51,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:51,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:51,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:51,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:51,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:51,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:53:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:51,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:51,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:51,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:51,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:51,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:51,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:53:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:51,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:51,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:51,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:51,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:51,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:51,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:53:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:51,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:51,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:51,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:51,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:51,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:51,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:51,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 06:53:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:51,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:51,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:51,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:51,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:51,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 06:53:51,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615637212] [2020-09-25 06:53:51,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:51,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:53:51,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98588683] [2020-09-25 06:53:51,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:53:51,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:51,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:53:51,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:53:51,402 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand 11 states. [2020-09-25 06:53:51,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:51,729 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2020-09-25 06:53:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:53:51,730 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-09-25 06:53:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:51,731 INFO L225 Difference]: With dead ends: 128 [2020-09-25 06:53:51,731 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 06:53:51,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 06:53:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 06:53:51,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 107. [2020-09-25 06:53:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 06:53:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-09-25 06:53:51,741 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 78 [2020-09-25 06:53:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:51,741 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-09-25 06:53:51,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:53:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-09-25 06:53:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 06:53:51,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:51,743 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:53:51,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 06:53:51,743 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:51,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:51,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1911943399, now seen corresponding path program 2 times [2020-09-25 06:53:51,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:51,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108561189] [2020-09-25 06:53:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:51,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 06:53:53,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:53,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1438 [2020-09-25 06:53:53,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:53:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:53:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:53,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:53,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:53:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:53:53,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:53:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:53,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:53:53,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:53:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:53:53,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:53,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:53:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:53,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:53,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:53:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:53,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:53,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:53:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:53,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 06:53:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:53,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:53,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 06:53:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:53,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:53,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 06:53:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:53,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:53,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:53,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:53,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:53,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:53,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:53,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:53,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:53,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:53,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-25 06:53:53,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108561189] [2020-09-25 06:53:53,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:53,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:53:53,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872977664] [2020-09-25 06:53:53,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:53:53,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:53,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:53:53,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:53:53,617 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 12 states. [2020-09-25 06:53:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:54,037 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2020-09-25 06:53:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:53:54,039 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-09-25 06:53:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:54,040 INFO L225 Difference]: With dead ends: 126 [2020-09-25 06:53:54,040 INFO L226 Difference]: Without dead ends: 124 [2020-09-25 06:53:54,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:53:54,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-25 06:53:54,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2020-09-25 06:53:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 06:53:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2020-09-25 06:53:54,063 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 91 [2020-09-25 06:53:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:54,064 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2020-09-25 06:53:54,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:53:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2020-09-25 06:53:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 06:53:54,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:54,067 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2020-09-25 06:53:54,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 06:53:54,068 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:54,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1949077486, now seen corresponding path program 2 times [2020-09-25 06:53:54,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:54,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181459732] [2020-09-25 06:53:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:54,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 06:53:59,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:53:59,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:53:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 06:53:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:59,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:59,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:53:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:59,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:53:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:53:59,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:53:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:59,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:53:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:53:59,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:53:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:59,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:53:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:59,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 06:53:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:59,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 06:53:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:53:59,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 06:53:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:59,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 06:53:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:59,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-25 06:53:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:59,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:59,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:59,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:59,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:59,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:53:59,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:59,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-25 06:53:59,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181459732] [2020-09-25 06:53:59,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:59,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:53:59,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082875542] [2020-09-25 06:53:59,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:53:59,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:59,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:53:59,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:53:59,615 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand 15 states. [2020-09-25 06:54:00,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:54:00,157 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2020-09-25 06:54:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 06:54:00,159 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 104 [2020-09-25 06:54:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:54:00,161 INFO L225 Difference]: With dead ends: 133 [2020-09-25 06:54:00,161 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 06:54:00,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-09-25 06:54:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 06:54:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2020-09-25 06:54:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-25 06:54:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-09-25 06:54:00,170 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 104 [2020-09-25 06:54:00,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:54:00,170 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-09-25 06:54:00,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:54:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-09-25 06:54:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 06:54:00,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:54:00,172 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:54:00,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 06:54:00,172 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:54:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:54:00,173 INFO L82 PathProgramCache]: Analyzing trace with hash 55355532, now seen corresponding path program 2 times [2020-09-25 06:54:00,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:54:00,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992865140] [2020-09-25 06:54:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:54:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:00,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:00,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 06:54:05,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:54:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:54:05,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:54:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:54:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 06:54:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:54:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:54:05,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:54:05,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:54:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:05,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:54:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:54:05,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:54:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:05,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:54:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:05,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:05,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:54:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:05,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:54:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:05,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 06:54:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:05,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 06:54:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:05,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 06:54:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:05,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 06:54:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:05,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 06:54:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:05,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:05,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:05,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:05,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:05,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 22 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-25 06:54:05,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992865140] [2020-09-25 06:54:05,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:54:05,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:54:05,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816424305] [2020-09-25 06:54:05,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:54:05,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:54:05,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:54:05,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:54:05,717 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 16 states. [2020-09-25 06:54:06,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:54:06,517 INFO L93 Difference]: Finished difference Result 150 states and 167 transitions. [2020-09-25 06:54:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 06:54:06,517 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 06:54:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:54:06,519 INFO L225 Difference]: With dead ends: 150 [2020-09-25 06:54:06,519 INFO L226 Difference]: Without dead ends: 148 [2020-09-25 06:54:06,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2020-09-25 06:54:06,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-25 06:54:06,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 129. [2020-09-25 06:54:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-25 06:54:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2020-09-25 06:54:06,531 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 108 [2020-09-25 06:54:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:54:06,532 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2020-09-25 06:54:06,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:54:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2020-09-25 06:54:06,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 06:54:06,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:54:06,533 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:54:06,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 06:54:06,534 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:54:06,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:54:06,534 INFO L82 PathProgramCache]: Analyzing trace with hash -78339458, now seen corresponding path program 3 times [2020-09-25 06:54:06,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:54:06,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325678097] [2020-09-25 06:54:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:54:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:06,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:06,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 06:54:11,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:54:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:54:11,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:54:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:54:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 06:54:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:54:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:54:11,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:54:11,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:11,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:11,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:54:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:54:11,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:11,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:54:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:54:11,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:54:11,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:54:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:54:11,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:11,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:54:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:54:11,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:11,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:54:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:11,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:11,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:54:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:11,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:11,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 06:54:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:54:11,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:11,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 06:54:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:54:11,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 06:54:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:54:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 06:54:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:11,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:11,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:11,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:11,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:11,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 06:54:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:11,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:12,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:12,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 06:54:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:12,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:12,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:12,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:12,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 06:54:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:12,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:12,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:12,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:12,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:12,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:12,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:12,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 26 proven. 48 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-09-25 06:54:12,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325678097] [2020-09-25 06:54:12,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:54:12,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:54:12,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984922817] [2020-09-25 06:54:12,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:54:12,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:54:12,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:54:12,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:54:12,049 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand 15 states. [2020-09-25 06:54:12,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:54:12,661 INFO L93 Difference]: Finished difference Result 156 states and 175 transitions. [2020-09-25 06:54:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 06:54:12,661 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 121 [2020-09-25 06:54:12,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:54:12,664 INFO L225 Difference]: With dead ends: 156 [2020-09-25 06:54:12,664 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 06:54:12,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2020-09-25 06:54:12,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 06:54:12,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 142. [2020-09-25 06:54:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-25 06:54:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2020-09-25 06:54:12,680 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 121 [2020-09-25 06:54:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:54:12,681 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2020-09-25 06:54:12,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:54:12,681 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2020-09-25 06:54:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 06:54:12,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:54:12,685 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:54:12,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 06:54:12,685 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:54:12,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:54:12,686 INFO L82 PathProgramCache]: Analyzing trace with hash 633826231, now seen corresponding path program 3 times [2020-09-25 06:54:12,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:54:12,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701180930] [2020-09-25 06:54:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:54:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:12,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:13,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:17,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:17,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 06:54:17,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:54:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:54:17,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:17,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:54:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:54:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 06:54:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:18,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:54:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:54:18,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:54:18,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:54:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:18,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:54:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:18,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:54:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:54:18,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:54:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:54:18,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:54:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:18,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:54:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:54:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:18,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 06:54:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:54:18,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 06:54:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:54:18,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 06:54:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:18,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 06:54:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:18,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:18,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 06:54:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:18,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:18,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 06:54:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 06:54:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 06:54:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:18,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-25 06:54:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:18,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:18,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:18,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 30 proven. 48 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-25 06:54:18,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701180930] [2020-09-25 06:54:18,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:54:18,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 06:54:18,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307349550] [2020-09-25 06:54:18,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 06:54:18,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:54:18,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 06:54:18,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:54:18,520 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand 18 states. [2020-09-25 06:54:19,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:54:19,081 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2020-09-25 06:54:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 06:54:19,083 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 134 [2020-09-25 06:54:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:54:19,085 INFO L225 Difference]: With dead ends: 148 [2020-09-25 06:54:19,087 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 06:54:19,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2020-09-25 06:54:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 06:54:19,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2020-09-25 06:54:19,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-25 06:54:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2020-09-25 06:54:19,098 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 134 [2020-09-25 06:54:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:54:19,099 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2020-09-25 06:54:19,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 06:54:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2020-09-25 06:54:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 06:54:19,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:54:19,101 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 06:54:19,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 06:54:19,101 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:54:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:54:19,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1897035733, now seen corresponding path program 3 times [2020-09-25 06:54:19,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:54:19,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331522525] [2020-09-25 06:54:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:54:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:19,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:21,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 06:54:24,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:54:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:54:24,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 06:54:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:54:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 06:54:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:24,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:54:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:54:24,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:54:24,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:54:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:54:24,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:54:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:54:24,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:54:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:24,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:54:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:24,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:54:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:24,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:54:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:24,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 06:54:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:24,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 06:54:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:24,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 06:54:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:24,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 06:54:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:24,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 06:54:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:24,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 06:54:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:24,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-25 06:54:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:54:24,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 06:54:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:24,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 06:54:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:24,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:24,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:24,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:24,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:24,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:54:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 30 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-25 06:54:24,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331522525] [2020-09-25 06:54:24,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:54:24,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 06:54:24,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484180736] [2020-09-25 06:54:24,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 06:54:24,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:54:24,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 06:54:24,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:54:24,902 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 21 states. [2020-09-25 06:54:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:54:26,038 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-09-25 06:54:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 06:54:26,038 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 138 [2020-09-25 06:54:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:54:26,041 INFO L225 Difference]: With dead ends: 152 [2020-09-25 06:54:26,041 INFO L226 Difference]: Without dead ends: 150 [2020-09-25 06:54:26,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 06:54:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-25 06:54:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 139. [2020-09-25 06:54:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-25 06:54:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2020-09-25 06:54:26,054 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 138 [2020-09-25 06:54:26,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:54:26,055 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2020-09-25 06:54:26,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 06:54:26,055 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2020-09-25 06:54:26,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 06:54:26,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:54:26,057 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:54:26,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 06:54:26,057 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:54:26,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:54:26,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1751458142, now seen corresponding path program 4 times [2020-09-25 06:54:26,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:54:26,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880003744] [2020-09-25 06:54:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:54:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:26,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking...