/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dancing.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:54:46,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:54:46,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:54:46,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:54:46,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:54:46,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:54:46,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:54:46,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:54:46,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:54:46,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:54:46,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:54:46,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:54:46,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:54:46,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:54:46,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:54:46,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:54:46,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:54:46,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:54:46,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:54:46,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:54:46,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:54:46,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:54:46,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:54:46,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:54:46,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:54:46,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:54:46,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:54:46,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:54:46,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:54:46,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:54:46,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:54:46,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:54:46,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:54:46,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:54:46,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:54:46,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:54:46,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:54:46,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:54:46,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:54:46,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:54:46,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:54:46,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:54:46,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:54:46,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:54:46,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:54:46,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:54:46,442 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:54:46,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:54:46,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:54:46,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:54:46,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:54:46,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:54:46,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:54:46,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:54:46,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:54:46,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:54:46,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:54:46,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:54:46,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:54:46,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:54:46,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:54:46,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:54:46,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:54:46,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:54:46,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:54:46,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:54:46,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:54:46,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:54:46,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:54:46,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:54:46,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:54:46,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:54:46,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:54:46,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:54:46,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:54:46,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:54:46,756 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:54:46,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dancing.i [2020-10-14 04:54:46,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6042f2d36/f60920ce33b9452598e80ec3e8bb4b40/FLAGe41dfac9e [2020-10-14 04:54:47,352 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:54:47,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dancing.i [2020-10-14 04:54:47,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6042f2d36/f60920ce33b9452598e80ec3e8bb4b40/FLAGe41dfac9e [2020-10-14 04:54:47,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6042f2d36/f60920ce33b9452598e80ec3e8bb4b40 [2020-10-14 04:54:47,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:54:47,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:54:47,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:54:47,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:54:47,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:54:47,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:54:47" (1/1) ... [2020-10-14 04:54:47,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a964ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:47, skipping insertion in model container [2020-10-14 04:54:47,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:54:47" (1/1) ... [2020-10-14 04:54:47,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:54:47,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:54:48,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:54:48,192 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:54:48,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:54:48,293 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:54:48,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48 WrapperNode [2020-10-14 04:54:48,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:54:48,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:54:48,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:54:48,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:54:48,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48" (1/1) ... [2020-10-14 04:54:48,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48" (1/1) ... [2020-10-14 04:54:48,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48" (1/1) ... [2020-10-14 04:54:48,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48" (1/1) ... [2020-10-14 04:54:48,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48" (1/1) ... [2020-10-14 04:54:48,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48" (1/1) ... [2020-10-14 04:54:48,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48" (1/1) ... [2020-10-14 04:54:48,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:54:48,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:54:48,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:54:48,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:54:48,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 04:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 04:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 04:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 04:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure remove [2020-10-14 04:54:48,427 INFO L138 BoogieDeclarations]: Found implementation of procedure re_insert [2020-10-14 04:54:48,427 INFO L138 BoogieDeclarations]: Found implementation of procedure is_list_containing_x [2020-10-14 04:54:48,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 04:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 04:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 04:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 04:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 04:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:54:48,430 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:54:48,430 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:54:48,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:54:48,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:54:48,431 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:54:48,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:54:48,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:54:48,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:54:48,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:54:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:54:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:54:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:54:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:54:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:54:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:54:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:54:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:54:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:54:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:54:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:54:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:54:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:54:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:54:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:54:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:54:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:54:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:54:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:54:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:54:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:54:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:54:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:54:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:54:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:54:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:54:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:54:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:54:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:54:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:54:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:54:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:54:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:54:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:54:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:54:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:54:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:54:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:54:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:54:48,442 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:54:48,442 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:54:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:54:48,444 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:54:48,444 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:54:48,444 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:54:48,444 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:54:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:54:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:54:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:54:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:54:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:54:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:54:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:54:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:54:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:54:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:54:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:54:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:54:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:54:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:54:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:54:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:54:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:54:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:54:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:54:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:54:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:54:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:54:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:54:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:54:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:54:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:54:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:54:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:54:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:54:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:54:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:54:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:54:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:54:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:54:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:54:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:54:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:54:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:54:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:54:48,451 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:54:48,451 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:54:48,451 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-14 04:54:48,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:54:48,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:54:48,452 INFO L130 BoogieDeclarations]: Found specification of procedure re_insert [2020-10-14 04:54:48,453 INFO L130 BoogieDeclarations]: Found specification of procedure is_list_containing_x [2020-10-14 04:54:48,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:54:48,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:54:48,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:54:48,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:54:48,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:54:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:54:48,964 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:54:48,964 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:54:48,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:48 BoogieIcfgContainer [2020-10-14 04:54:48,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:54:48,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:54:48,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:54:48,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:54:48,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:54:47" (1/3) ... [2020-10-14 04:54:48,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d2abb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:54:48, skipping insertion in model container [2020-10-14 04:54:48,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:48" (2/3) ... [2020-10-14 04:54:48,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d2abb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:54:48, skipping insertion in model container [2020-10-14 04:54:48,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:48" (3/3) ... [2020-10-14 04:54:48,981 INFO L109 eAbstractionObserver]: Analyzing ICFG dancing.i [2020-10-14 04:54:48,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:54:48,998 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:54:49,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:54:49,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:54:49,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:54:49,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:54:49,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:54:49,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:54:49,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:54:49,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:54:49,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:54:49,051 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-14 04:54:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 04:54:49,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:49,062 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, 1, 1, 1, 1, 1] [2020-10-14 04:54:49,062 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:49,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1723588064, now seen corresponding path program 1 times [2020-10-14 04:54:49,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:49,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672402151] [2020-10-14 04:54:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:49,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:49,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:50,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:50,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:54:50,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:54:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1244 [2020-10-14 04:54:50,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:50,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 04:54:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:54:50,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:50,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:50,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:50,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:50,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:50,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:50,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:50,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 04:54:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:50,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:50,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:54:50,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:50,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:54:50,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:50,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:50,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:50,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:50,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 04:54:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:50,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:54:50,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:50,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:50,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:54:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:50,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:50,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:54:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:50,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:50,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:50,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:54:50,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:54:50,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:50,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 04:54:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:50,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:50,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672402151] [2020-10-14 04:54:50,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:54:50,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:54:50,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345015831] [2020-10-14 04:54:50,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:54:50,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:50,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:54:50,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:54:50,606 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-10-14 04:54:50,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:50,922 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2020-10-14 04:54:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:54:50,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-14 04:54:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:50,937 INFO L225 Difference]: With dead ends: 111 [2020-10-14 04:54:50,937 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 04:54:50,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:54:50,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 04:54:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2020-10-14 04:54:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 04:54:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2020-10-14 04:54:51,027 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 31 [2020-10-14 04:54:51,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:51,027 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2020-10-14 04:54:51,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:54:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2020-10-14 04:54:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 04:54:51,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:51,033 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, 1, 1, 1, 1, 1] [2020-10-14 04:54:51,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:54:51,036 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1228609235, now seen corresponding path program 1 times [2020-10-14 04:54:51,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:51,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792192985] [2020-10-14 04:54:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:51,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:54:51,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:54:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-14 04:54:51,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:51,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:54:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:54:51,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:51,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:51,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:51,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:51,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:51,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:51,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:51,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:51,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 04:54:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:51,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:51,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:54:51,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:54:51,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:51,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:51,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 04:54:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:51,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:54:51,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:54:51,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:51,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:51,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:51,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:54:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:51,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:54:51,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:51,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:54:51,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:51,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:51,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:51,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792192985] [2020-10-14 04:54:51,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:54:51,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:54:51,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434971518] [2020-10-14 04:54:51,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:54:51,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:51,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:54:51,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:51,916 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand 8 states. [2020-10-14 04:54:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:52,352 INFO L93 Difference]: Finished difference Result 105 states and 139 transitions. [2020-10-14 04:54:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:54:52,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-14 04:54:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:52,355 INFO L225 Difference]: With dead ends: 105 [2020-10-14 04:54:52,355 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 04:54:52,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:54:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 04:54:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2020-10-14 04:54:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 04:54:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2020-10-14 04:54:52,372 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 31 [2020-10-14 04:54:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:52,373 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2020-10-14 04:54:52,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:54:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2020-10-14 04:54:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:54:52,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:52,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:52,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:54:52,375 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:52,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:52,376 INFO L82 PathProgramCache]: Analyzing trace with hash -558803909, now seen corresponding path program 1 times [2020-10-14 04:54:52,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:52,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802547174] [2020-10-14 04:54:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:52,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:52,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:57,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:54:57,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:54:57,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 04:54:57,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:57,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:54:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:57,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:57,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:57,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:57,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:57,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:57,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:57,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:57,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:54:57,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:54:57,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:57,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:57,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:54:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:57,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:57,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:57,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:57,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 04:54:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:57,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:57,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:54:57,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:54:57,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:57,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:57,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 04:54:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:57,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:57,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:54:57,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:57,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:54:57,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:57,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:57,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:54:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:57,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:57,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802547174] [2020-10-14 04:54:57,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:57,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:54:57,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596110344] [2020-10-14 04:54:57,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:54:57,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:57,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:54:57,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:57,548 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand 9 states. [2020-10-14 04:54:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:58,128 INFO L93 Difference]: Finished difference Result 138 states and 189 transitions. [2020-10-14 04:54:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:54:58,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-14 04:54:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:58,131 INFO L225 Difference]: With dead ends: 138 [2020-10-14 04:54:58,131 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 04:54:58,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:54:58,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 04:54:58,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2020-10-14 04:54:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 04:54:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2020-10-14 04:54:58,148 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 40 [2020-10-14 04:54:58,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:58,148 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2020-10-14 04:54:58,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:54:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2020-10-14 04:54:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:54:58,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:58,151 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-14 04:54:58,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:54:58,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:58,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:58,152 INFO L82 PathProgramCache]: Analyzing trace with hash 292253981, now seen corresponding path program 1 times [2020-10-14 04:54:58,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:58,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717297840] [2020-10-14 04:54:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:58,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:58,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:58,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:03,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:03,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:55:03,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:55:03,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 04:55:03,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:03,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:03,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:03,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:03,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:03,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:03,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:03,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:03,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:03,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:03,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:03,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:03,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:03,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:55:03,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:03,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:55:03,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:03,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:55:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:55:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:55:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:03,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 04:55:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:03,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:03,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:03,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:03,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:03,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:03,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:03,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 04:55:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:55:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:03,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:03,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:03,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:03,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:03,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:03,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 04:55:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:03,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 04:55:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:03,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:03,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:03,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:55:03,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:03,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:03,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 04:55:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:55:03,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717297840] [2020-10-14 04:55:03,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:03,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:55:03,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616236204] [2020-10-14 04:55:03,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:55:03,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:03,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:55:03,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:55:03,425 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand 9 states. [2020-10-14 04:55:04,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:04,060 INFO L93 Difference]: Finished difference Result 160 states and 231 transitions. [2020-10-14 04:55:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:55:04,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-14 04:55:04,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:04,063 INFO L225 Difference]: With dead ends: 160 [2020-10-14 04:55:04,063 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 04:55:04,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:55:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 04:55:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-14 04:55:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 04:55:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 153 transitions. [2020-10-14 04:55:04,104 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 153 transitions. Word has length 42 [2020-10-14 04:55:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:04,104 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 153 transitions. [2020-10-14 04:55:04,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:55:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 153 transitions. [2020-10-14 04:55:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:55:04,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:04,113 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:04,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:55:04,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:04,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:04,114 INFO L82 PathProgramCache]: Analyzing trace with hash -724727990, now seen corresponding path program 1 times [2020-10-14 04:55:04,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:04,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176570595] [2020-10-14 04:55:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:04,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:09,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 04:55:09,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 04:55:09,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 04:55:09,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:09,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 04:55:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:09,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:09,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:09,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:09,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:09,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:09,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:09,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:09,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:09,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:55:09,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:09,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:09,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:09,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:55:09,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:09,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:09,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:09,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:09,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:09,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:55:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:09,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:09,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:09,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:09,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:09,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:09,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:09,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:09,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:09,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:55:09,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:09,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:09,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:55:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:09,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:09,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:55:09,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:55:09,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:09,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:55:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 04:55:09,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176570595] [2020-10-14 04:55:09,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:55:09,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 04:55:09,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128696432] [2020-10-14 04:55:09,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:55:09,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:09,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:55:09,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:55:09,351 INFO L87 Difference]: Start difference. First operand 102 states and 153 transitions. Second operand 9 states. [2020-10-14 04:55:09,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:09,738 INFO L93 Difference]: Finished difference Result 113 states and 164 transitions. [2020-10-14 04:55:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:55:09,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-14 04:55:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:09,741 INFO L225 Difference]: With dead ends: 113 [2020-10-14 04:55:09,741 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 04:55:09,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:55:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 04:55:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2020-10-14 04:55:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 04:55:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 159 transitions. [2020-10-14 04:55:09,772 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 159 transitions. Word has length 48 [2020-10-14 04:55:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:09,773 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 159 transitions. [2020-10-14 04:55:09,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:55:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 159 transitions. [2020-10-14 04:55:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:55:09,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:09,776 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1] [2020-10-14 04:55:09,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:55:09,777 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash 29907645, now seen corresponding path program 1 times [2020-10-14 04:55:09,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:09,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548306243] [2020-10-14 04:55:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:10,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:10,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:10,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:10,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:55:12,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:55:12,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3087 [2020-10-14 04:55:12,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:55:12,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:12,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:55:12,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:13,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:13,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:13,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:13,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:13,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:55:13,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:13,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:13,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:13,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:13,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:55:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:13,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:13,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:13,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:13,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:13,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:13,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:13,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:55:13,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:13,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:13,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:55:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:13,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:13,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:55:13,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:13,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:55:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:55:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:13,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:13,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:13,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:13,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:13,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:13,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 04:55:13,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548306243] [2020-10-14 04:55:13,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:13,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:55:13,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910249867] [2020-10-14 04:55:13,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:55:13,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:13,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:55:13,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:55:13,233 INFO L87 Difference]: Start difference. First operand 108 states and 159 transitions. Second operand 12 states. [2020-10-14 04:55:14,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:14,645 INFO L93 Difference]: Finished difference Result 248 states and 381 transitions. [2020-10-14 04:55:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:55:14,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-14 04:55:14,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:14,653 INFO L225 Difference]: With dead ends: 248 [2020-10-14 04:55:14,653 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 04:55:14,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:55:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 04:55:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 104. [2020-10-14 04:55:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 04:55:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 146 transitions. [2020-10-14 04:55:14,683 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 146 transitions. Word has length 54 [2020-10-14 04:55:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:14,684 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 146 transitions. [2020-10-14 04:55:14,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:55:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 146 transitions. [2020-10-14 04:55:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:55:14,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:14,685 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1] [2020-10-14 04:55:14,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:55:14,686 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:14,686 INFO L82 PathProgramCache]: Analyzing trace with hash -104105861, now seen corresponding path program 1 times [2020-10-14 04:55:14,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:14,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788984814] [2020-10-14 04:55:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:14,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:15,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:55:15,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:55:15,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-10-14 04:55:15,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:15,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:55:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:55:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:15,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:15,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:15,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:15,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:15,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:15,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:15,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:15,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:15,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:55:15,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:15,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:15,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:15,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:15,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:15,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:15,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:15,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:55:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:15,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:15,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:15,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:15,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:15,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:15,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:15,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:55:15,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:15,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:15,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:55:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,262 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-14 04:55:16,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:55:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:16,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:16,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:55:16,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:16,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:55:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:55:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:16,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:16,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:55:16,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:16,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:55:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:55:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 04:55:16,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788984814] [2020-10-14 04:55:16,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:16,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:55:16,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522739777] [2020-10-14 04:55:16,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:55:16,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:16,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:55:16,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:55:16,499 INFO L87 Difference]: Start difference. First operand 104 states and 146 transitions. Second operand 16 states. [2020-10-14 04:55:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:18,625 INFO L93 Difference]: Finished difference Result 189 states and 284 transitions. [2020-10-14 04:55:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:55:18,627 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-14 04:55:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:18,629 INFO L225 Difference]: With dead ends: 189 [2020-10-14 04:55:18,629 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 04:55:18,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:55:18,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 04:55:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 118. [2020-10-14 04:55:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 04:55:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 176 transitions. [2020-10-14 04:55:18,682 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 176 transitions. Word has length 54 [2020-10-14 04:55:18,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:18,684 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 176 transitions. [2020-10-14 04:55:18,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:55:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 176 transitions. [2020-10-14 04:55:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 04:55:18,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:18,688 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1] [2020-10-14 04:55:18,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:55:18,688 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:18,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1294944316, now seen corresponding path program 1 times [2020-10-14 04:55:18,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:18,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331232807] [2020-10-14 04:55:18,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:18,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:20,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:23,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:55:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:55:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:55:23,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:23,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:55:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 04:55:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:55:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:23,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:23,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:23,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:23,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:23,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:23,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:23,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:23,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:23,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:23,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:23,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:23,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:23,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:23,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:23,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:23,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:23,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:23,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:55:23,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:23,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:23,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:23,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:55:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:23,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:23,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:55:23,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:23,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:23,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:23,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:23,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:23,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:23,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:23,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:23,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:55:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:23,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:23,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:23,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:55:23,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:23,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:55:23,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:23,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:55:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:23,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:23,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:23,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:23,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:55:23,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:23,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:23,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:55:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:23,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 04:55:23,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331232807] [2020-10-14 04:55:23,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:55:23,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 04:55:23,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290002232] [2020-10-14 04:55:23,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:55:23,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:23,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:55:23,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:55:23,859 INFO L87 Difference]: Start difference. First operand 118 states and 176 transitions. Second operand 10 states. [2020-10-14 04:55:24,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:24,257 INFO L93 Difference]: Finished difference Result 139 states and 207 transitions. [2020-10-14 04:55:24,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:55:24,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-14 04:55:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:24,260 INFO L225 Difference]: With dead ends: 139 [2020-10-14 04:55:24,260 INFO L226 Difference]: Without dead ends: 137 [2020-10-14 04:55:24,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:55:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-14 04:55:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2020-10-14 04:55:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 04:55:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 199 transitions. [2020-10-14 04:55:24,296 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 199 transitions. Word has length 55 [2020-10-14 04:55:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:24,297 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 199 transitions. [2020-10-14 04:55:24,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:55:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 199 transitions. [2020-10-14 04:55:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 04:55:24,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:24,300 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:24,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:55:24,301 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash 565078057, now seen corresponding path program 2 times [2020-10-14 04:55:24,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:24,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836326963] [2020-10-14 04:55:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:24,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:25,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 04:55:29,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 04:55:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:55:29,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:55:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 04:55:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:29,579 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-10-14 04:55:29,707 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-10-14 04:55:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:29,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:29,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:29,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:29,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:55:29,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:29,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:29,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:55:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:29,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:55:29,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:29,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:29,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:55:29,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:30,634 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 45 [2020-10-14 04:55:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:55:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:30,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:30,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:30,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:55:30,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 04:55:30,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:30,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:30,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:55:30,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:55:30,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:55:30,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:30,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:30,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:30,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:30,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:55:30,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:30,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:55:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:55:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:31,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:31,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:31,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:31,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:31,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:31,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:55:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:55:31,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 04:55:31,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836326963] [2020-10-14 04:55:31,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:31,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:55:31,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233548999] [2020-10-14 04:55:31,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:55:31,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:31,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:55:31,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:55:31,225 INFO L87 Difference]: Start difference. First operand 131 states and 199 transitions. Second operand 19 states. [2020-10-14 04:55:32,844 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-14 04:55:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:33,279 INFO L93 Difference]: Finished difference Result 254 states and 381 transitions. [2020-10-14 04:55:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:55:33,280 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 61 [2020-10-14 04:55:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:33,282 INFO L225 Difference]: With dead ends: 254 [2020-10-14 04:55:33,282 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 04:55:33,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:55:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 04:55:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 129. [2020-10-14 04:55:33,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 04:55:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 190 transitions. [2020-10-14 04:55:33,307 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 190 transitions. Word has length 61 [2020-10-14 04:55:33,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:33,308 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 190 transitions. [2020-10-14 04:55:33,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:55:33,308 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 190 transitions. [2020-10-14 04:55:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:55:33,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:33,309 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1] [2020-10-14 04:55:33,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:55:33,310 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:33,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:33,310 INFO L82 PathProgramCache]: Analyzing trace with hash 114748857, now seen corresponding path program 1 times [2020-10-14 04:55:33,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:33,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490754137] [2020-10-14 04:55:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:33,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:33,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:33,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:55:33,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:55:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-14 04:55:33,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:33,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:55:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:55:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:34,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:34,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:34,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:34,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:34,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:34,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:34,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:34,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:34,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:34,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:34,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:55:34,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:34,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:34,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:34,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:34,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:34,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:34,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:34,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:34,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:34,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:34,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:34,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:34,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:34,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:34,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:55:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:34,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:34,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:34,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:34,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:34,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:34,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:34,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:34,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:34,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:34,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:34,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:34,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:34,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:34,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:55:34,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:34,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:34,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:55:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:34,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:55:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:34,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:55:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:34,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:34,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:34,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:34,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 04:55:34,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490754137] [2020-10-14 04:55:34,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:34,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:55:34,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842665396] [2020-10-14 04:55:34,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:55:34,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:34,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:55:34,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:55:34,111 INFO L87 Difference]: Start difference. First operand 129 states and 190 transitions. Second operand 10 states. [2020-10-14 04:55:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:34,651 INFO L93 Difference]: Finished difference Result 214 states and 320 transitions. [2020-10-14 04:55:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:55:34,652 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-14 04:55:34,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:34,654 INFO L225 Difference]: With dead ends: 214 [2020-10-14 04:55:34,654 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 04:55:34,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:55:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 04:55:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 129. [2020-10-14 04:55:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 04:55:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 189 transitions. [2020-10-14 04:55:34,680 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 189 transitions. Word has length 54 [2020-10-14 04:55:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:34,680 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 189 transitions. [2020-10-14 04:55:34,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:55:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 189 transitions. [2020-10-14 04:55:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 04:55:34,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:34,683 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:34,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:55:34,683 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:34,683 INFO L82 PathProgramCache]: Analyzing trace with hash 302990369, now seen corresponding path program 1 times [2020-10-14 04:55:34,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:34,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064287998] [2020-10-14 04:55:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:35,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 04:55:35,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:55:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-14 04:55:35,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:35,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:55:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:35,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:35,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:35,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:35,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:35,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:35,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:35,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:35,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:35,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 04:55:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:35,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:35,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:35,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:35,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 04:55:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:35,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:35,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:35,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:35,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:35,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:35,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:35,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:55:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:35,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:35,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:35,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:55:35,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:35,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 04:55:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:35,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:35,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:35,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:35,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 04:55:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:35,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:35,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:35,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:35,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:35,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:35,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 04:55:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:55:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:35,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:35,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:35,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:35,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:35,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:35,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:35,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 04:55:35,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:35,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:55:35,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064287998] [2020-10-14 04:55:35,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:55:35,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:55:35,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731024663] [2020-10-14 04:55:35,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:55:35,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:35,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:55:35,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:55:35,179 INFO L87 Difference]: Start difference. First operand 129 states and 189 transitions. Second operand 7 states. [2020-10-14 04:55:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:35,573 INFO L93 Difference]: Finished difference Result 186 states and 262 transitions. [2020-10-14 04:55:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:55:35,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-10-14 04:55:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:35,576 INFO L225 Difference]: With dead ends: 186 [2020-10-14 04:55:35,576 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 04:55:35,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:55:35,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 04:55:35,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 135. [2020-10-14 04:55:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 04:55:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 201 transitions. [2020-10-14 04:55:35,597 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 201 transitions. Word has length 49 [2020-10-14 04:55:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:35,598 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 201 transitions. [2020-10-14 04:55:35,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:55:35,598 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 201 transitions. [2020-10-14 04:55:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 04:55:35,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:35,599 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:35,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:55:35,600 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:35,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1689193763, now seen corresponding path program 1 times [2020-10-14 04:55:35,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:35,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241732236] [2020-10-14 04:55:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 04:55:37,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:55:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1758 [2020-10-14 04:55:37,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:55:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:37,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:37,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 04:55:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:37,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:37,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 04:55:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:37,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:37,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:37,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:55:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:55:37,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 04:55:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:37,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:37,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 04:55:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:37,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:37,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 04:55:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:55:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:37,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:55:37,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 04:55:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:37,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:55:37,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241732236] [2020-10-14 04:55:37,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:55:37,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:55:37,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616233624] [2020-10-14 04:55:37,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:55:37,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:37,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:55:37,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:55:37,556 INFO L87 Difference]: Start difference. First operand 135 states and 201 transitions. Second operand 8 states. [2020-10-14 04:55:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:38,100 INFO L93 Difference]: Finished difference Result 186 states and 261 transitions. [2020-10-14 04:55:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:55:38,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-14 04:55:38,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:38,103 INFO L225 Difference]: With dead ends: 186 [2020-10-14 04:55:38,103 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 04:55:38,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:55:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 04:55:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 135. [2020-10-14 04:55:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 04:55:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 200 transitions. [2020-10-14 04:55:38,123 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 200 transitions. Word has length 49 [2020-10-14 04:55:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:38,124 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 200 transitions. [2020-10-14 04:55:38,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:55:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 200 transitions. [2020-10-14 04:55:38,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 04:55:38,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:38,125 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:38,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:55:38,126 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:38,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:38,126 INFO L82 PathProgramCache]: Analyzing trace with hash -682545499, now seen corresponding path program 1 times [2020-10-14 04:55:38,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:38,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537793801] [2020-10-14 04:55:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:38,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:39,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 04:55:39,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:55:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-14 04:55:39,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:39,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:55:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 04:55:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:39,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:39,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:39,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:39,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:39,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:39,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:39,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 04:55:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:39,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:39,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:39,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:55:39,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:39,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:39,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 04:55:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:39,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:39,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:39,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:55:39,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:39,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:55:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:39,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:39,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:39,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:39,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:39,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:39,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 04:55:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:39,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:39,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:39,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:55:39,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:39,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:39,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:39,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:39,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:39,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:39,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:39,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:39,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:39,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:55:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:39,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:39,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:39,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:39,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:39,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:55:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:55:39,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:55:39,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537793801] [2020-10-14 04:55:39,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:55:39,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:55:39,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523659152] [2020-10-14 04:55:39,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:55:39,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:39,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:55:39,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:55:39,100 INFO L87 Difference]: Start difference. First operand 135 states and 200 transitions. Second operand 8 states. [2020-10-14 04:55:39,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:39,409 INFO L93 Difference]: Finished difference Result 142 states and 206 transitions. [2020-10-14 04:55:39,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:55:39,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-14 04:55:39,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:39,411 INFO L225 Difference]: With dead ends: 142 [2020-10-14 04:55:39,411 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 04:55:39,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:55:39,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 04:55:39,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2020-10-14 04:55:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 04:55:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 159 transitions. [2020-10-14 04:55:39,430 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 159 transitions. Word has length 49 [2020-10-14 04:55:39,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:39,430 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 159 transitions. [2020-10-14 04:55:39,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:55:39,430 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 159 transitions. [2020-10-14 04:55:39,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 04:55:39,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:39,436 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-14 04:55:39,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:55:39,437 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:39,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:39,437 INFO L82 PathProgramCache]: Analyzing trace with hash -349225473, now seen corresponding path program 1 times [2020-10-14 04:55:39,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:39,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101689863] [2020-10-14 04:55:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:42,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:44,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:44,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:55:44,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 04:55:44,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:55:44,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:44,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:55:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:55:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:44,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:44,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:44,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:44,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:44,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:44,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:44,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 04:55:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:44,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:55:44,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:44,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:55:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:55:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:44,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:44,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:44,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:44,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:44,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:44,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:55:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:55:44,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:44,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 04:55:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:44,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:44,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:44,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:44,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:44,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:44,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:44,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 04:55:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:44,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:44,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:55:44,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:44,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:44,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:55:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:44,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:44,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:44,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:44,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:44,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:55:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:44,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:44,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:44,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:44,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:44,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:44,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 04:55:44,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101689863] [2020-10-14 04:55:44,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:44,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:55:44,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264067334] [2020-10-14 04:55:44,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:55:44,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:44,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:55:44,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:55:44,882 INFO L87 Difference]: Start difference. First operand 112 states and 159 transitions. Second operand 15 states. [2020-10-14 04:55:46,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:46,447 INFO L93 Difference]: Finished difference Result 198 states and 285 transitions. [2020-10-14 04:55:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:55:46,448 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-14 04:55:46,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:46,450 INFO L225 Difference]: With dead ends: 198 [2020-10-14 04:55:46,450 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 04:55:46,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:55:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 04:55:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 115. [2020-10-14 04:55:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 04:55:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 165 transitions. [2020-10-14 04:55:46,465 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 165 transitions. Word has length 57 [2020-10-14 04:55:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:46,466 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 165 transitions. [2020-10-14 04:55:46,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:55:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 165 transitions. [2020-10-14 04:55:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 04:55:46,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:46,467 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-14 04:55:46,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:55:46,468 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash -264384261, now seen corresponding path program 1 times [2020-10-14 04:55:46,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:46,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59959133] [2020-10-14 04:55:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:51,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:55:51,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:55:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:55:51,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:51,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:55:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 04:55:51,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:51,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:51,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:51,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:51,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 04:55:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:51,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:51,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:55:51,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:55:51,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:51,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:51,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:51,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:51,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:51,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:51,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:51,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 04:55:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:51,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:51,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:51,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:51,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:51,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 04:55:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:51,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:51,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:51,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:51,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:51,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:55:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:51,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:55:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:51,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:51,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:55:51,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:51,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:55:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:51,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:51,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:51,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:51,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:55:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:55:51,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 04:55:51,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59959133] [2020-10-14 04:55:51,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:51,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:55:51,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664252962] [2020-10-14 04:55:51,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:55:51,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:51,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:55:51,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:55:51,802 INFO L87 Difference]: Start difference. First operand 115 states and 165 transitions. Second operand 15 states. [2020-10-14 04:55:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:52,706 INFO L93 Difference]: Finished difference Result 210 states and 297 transitions. [2020-10-14 04:55:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:55:52,707 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-14 04:55:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:52,709 INFO L225 Difference]: With dead ends: 210 [2020-10-14 04:55:52,709 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 04:55:52,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:55:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 04:55:52,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 110. [2020-10-14 04:55:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 04:55:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 153 transitions. [2020-10-14 04:55:52,722 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 153 transitions. Word has length 57 [2020-10-14 04:55:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:52,722 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 153 transitions. [2020-10-14 04:55:52,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:55:52,722 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 153 transitions. [2020-10-14 04:55:52,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 04:55:52,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:52,723 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1] [2020-10-14 04:55:52,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:55:52,724 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:52,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1321139672, now seen corresponding path program 1 times [2020-10-14 04:55:52,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:52,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645708640] [2020-10-14 04:55:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:52,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:52,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:54,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:54,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:54,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:55:57,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 04:55:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:55:57,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:57,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 04:55:57,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:55:57,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:57,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:57,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:57,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 04:55:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:55:57,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:55:57,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:55:57,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:55:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:55:57,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:57,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:55:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:57,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 04:55:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:57,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:57,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:55:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:55:57,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 04:55:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:55:57,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 04:55:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:57,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 04:55:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:55:57,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:57,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:55:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:55:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:57,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:55:57,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 04:55:57,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645708640] [2020-10-14 04:55:57,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:57,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:55:57,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425092356] [2020-10-14 04:55:57,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:55:57,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:57,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:55:57,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:55:57,880 INFO L87 Difference]: Start difference. First operand 110 states and 153 transitions. Second operand 9 states. [2020-10-14 04:55:58,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:58,223 INFO L93 Difference]: Finished difference Result 178 states and 236 transitions. [2020-10-14 04:55:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:55:58,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-14 04:55:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:58,226 INFO L225 Difference]: With dead ends: 178 [2020-10-14 04:55:58,226 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 04:55:58,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:55:58,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 04:55:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-10-14 04:55:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 04:55:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-10-14 04:55:58,235 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 58 [2020-10-14 04:55:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:58,236 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-10-14 04:55:58,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:55:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-10-14 04:55:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 04:55:58,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:58,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:58,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:55:58,237 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:58,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1632908406, now seen corresponding path program 1 times [2020-10-14 04:55:58,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:58,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612546966] [2020-10-14 04:55:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:58,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:59,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:00,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:01,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:01,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:03,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:56:03,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-14 04:56:03,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:56:03,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:03,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:56:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:56:03,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:03,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:03,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:03,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:03,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:03,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:03,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:03,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:03,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:03,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:03,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:56:03,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:03,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:56:03,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:03,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:03,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:03,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:03,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:03,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:03,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:03,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:03,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:03,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:03,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:03,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:56:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:03,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:03,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:03,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:03,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:03,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:03,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:03,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:03,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:56:03,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:03,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:03,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:56:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:03,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:03,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:03,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:03,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:03,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:03,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:56:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:56:03,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 04:56:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:03,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:03,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:03,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:56:03,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:03,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 04:56:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:03,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:03,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:03,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:03,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 04:56:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:03,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 04:56:03,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612546966] [2020-10-14 04:56:03,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:03,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:56:03,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342405285] [2020-10-14 04:56:03,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:56:03,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:03,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:56:03,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:56:03,461 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 10 states. [2020-10-14 04:56:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:03,986 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2020-10-14 04:56:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:56:03,987 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2020-10-14 04:56:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:03,988 INFO L225 Difference]: With dead ends: 111 [2020-10-14 04:56:03,988 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 04:56:03,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 04:56:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-10-14 04:56:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 04:56:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2020-10-14 04:56:04,004 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 60 [2020-10-14 04:56:04,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:04,004 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2020-10-14 04:56:04,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:56:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-10-14 04:56:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 04:56:04,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:04,007 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:04,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 04:56:04,007 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:04,008 INFO L82 PathProgramCache]: Analyzing trace with hash 361397977, now seen corresponding path program 1 times [2020-10-14 04:56:04,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:04,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179212652] [2020-10-14 04:56:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:06,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:07,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:07,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:07,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:07,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:08,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:56:09,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 04:56:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 04:56:09,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:56:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 04:56:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:56:09,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:09,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:09,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:09,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:09,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:09,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:09,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:09,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:09,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:09,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:09,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:09,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:09,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:09,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:09,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:56:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:09,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:09,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:56:09,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:09,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:09,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:56:09,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:56:09,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:56:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:56:09,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:09,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 04:56:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:09,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:09,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:09,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:09,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:09,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:09,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:09,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:56:09,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:09,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:09,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 04:56:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:09,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:09,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:09,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:09,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 04:56:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:09,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 04:56:09,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179212652] [2020-10-14 04:56:09,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:56:09,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 04:56:09,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864508005] [2020-10-14 04:56:09,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:56:09,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:09,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:56:09,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:56:09,392 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand 10 states. [2020-10-14 04:56:09,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:09,998 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-10-14 04:56:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:56:09,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-14 04:56:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:10,000 INFO L225 Difference]: With dead ends: 94 [2020-10-14 04:56:10,000 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 04:56:10,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:10,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 04:56:10,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-14 04:56:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 04:56:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-10-14 04:56:10,011 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 67 [2020-10-14 04:56:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:10,012 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-10-14 04:56:10,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:56:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-10-14 04:56:10,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 04:56:10,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:10,018 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:10,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 04:56:10,019 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:10,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:10,019 INFO L82 PathProgramCache]: Analyzing trace with hash -918465701, now seen corresponding path program 1 times [2020-10-14 04:56:10,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:10,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559932553] [2020-10-14 04:56:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:10,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:12,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:15,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:15,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:56:15,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 04:56:15,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:56:15,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:15,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:15,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:56:15,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:15,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 04:56:15,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:15,472 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-10-14 04:56:15,840 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2020-10-14 04:56:16,511 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 59 [2020-10-14 04:56:16,675 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2020-10-14 04:56:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:56:16,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:16,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:16,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:56:16,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:56:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:56:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:16,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:16,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:16,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:56:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:16,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:56:16,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:16,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:16,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:56:16,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:17,122 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-14 04:56:17,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:56:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:17,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:17,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:17,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:17,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:56:17,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:17,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:17,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 04:56:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:17,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:17,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:17,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:56:17,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:17,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:17,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:17,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:17,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:17,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:17,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:17,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:17,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 04:56:17,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:17,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:56:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:17,636 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-14 04:56:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 04:56:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:17,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:17,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:17,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:17,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:56:17,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:17,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:17,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:56:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 04:56:17,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559932553] [2020-10-14 04:56:17,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:17,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:56:17,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798289196] [2020-10-14 04:56:17,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:56:17,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:17,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:56:17,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:56:17,860 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 20 states. [2020-10-14 04:56:18,121 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-14 04:56:18,983 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-14 04:56:19,447 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-14 04:56:20,037 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-10-14 04:56:20,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:20,287 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2020-10-14 04:56:20,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:56:20,287 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-14 04:56:20,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:20,288 INFO L225 Difference]: With dead ends: 76 [2020-10-14 04:56:20,288 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 04:56:20,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=184, Invalid=1076, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:56:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 04:56:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2020-10-14 04:56:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 04:56:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2020-10-14 04:56:20,299 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 67 [2020-10-14 04:56:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:20,299 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2020-10-14 04:56:20,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:56:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-10-14 04:56:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 04:56:20,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:20,301 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:20,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 04:56:20,301 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:20,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1505271715, now seen corresponding path program 1 times [2020-10-14 04:56:20,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:20,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319938250] [2020-10-14 04:56:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:21,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:21,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:23,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:56:25,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 04:56:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4872 [2020-10-14 04:56:25,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:56:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 04:56:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:25,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:25,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:25,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:25,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:25,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:56:25,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:25,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:25,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:56:25,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:25,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:25,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:25,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:56:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:25,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:25,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:25,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:25,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:56:25,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:25,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:56:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:25,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:56:25,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:25,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 04:56:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:25,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:56:25,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:25,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:25,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:25,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:56:25,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:56:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:25,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 04:56:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:25,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:56:25,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:56:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 04:56:25,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319938250] [2020-10-14 04:56:25,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:25,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:56:25,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131188912] [2020-10-14 04:56:25,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:56:25,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:25,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:56:25,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:56:25,753 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand 18 states. [2020-10-14 04:56:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:26,887 INFO L93 Difference]: Finished difference Result 131 states and 155 transitions. [2020-10-14 04:56:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:56:26,888 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 67 [2020-10-14 04:56:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:26,889 INFO L225 Difference]: With dead ends: 131 [2020-10-14 04:56:26,889 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 04:56:26,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 04:56:26,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 04:56:26,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2020-10-14 04:56:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 04:56:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2020-10-14 04:56:26,899 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 67 [2020-10-14 04:56:26,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:26,900 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2020-10-14 04:56:26,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:56:26,900 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2020-10-14 04:56:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 04:56:26,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:26,901 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:26,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 04:56:26,901 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:26,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:26,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1185790002, now seen corresponding path program 2 times [2020-10-14 04:56:26,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:26,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139629401] [2020-10-14 04:56:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:29,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:30,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:30,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:31,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:31,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:31,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 04:56:31,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 04:56:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 04:56:31,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:31,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:56:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:56:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:56:31,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:31,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:31,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:31,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:31,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:31,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:31,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:31,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:31,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:31,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:31,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:31,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:31,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:31,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:31,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:31,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:31,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:31,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:31,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:31,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:31,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:31,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:56:31,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:31,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:31,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:31,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:31,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:31,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:31,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:56:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:31,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:31,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:31,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:31,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:32,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:32,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:32,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:32,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:56:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:32,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:32,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:32,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:32,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:32,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:32,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 04:56:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:32,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:32,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:32,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:56:32,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:32,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:32,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:32,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:32,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:32,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:32,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:32,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:32,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:32,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:32,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 04:56:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:32,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:56:32,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:56:32,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:32,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:56:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:32,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:56:32,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:32,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:32,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:32,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:32,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:56:32,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:32,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:56:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:32,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:32,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:32,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:32,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:56:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:56:32,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-14 04:56:32,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139629401] [2020-10-14 04:56:32,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:56:32,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 04:56:32,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146518684] [2020-10-14 04:56:32,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:56:32,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:32,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:56:32,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:56:32,095 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 9 states. [2020-10-14 04:56:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:32,391 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-14 04:56:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:56:32,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-14 04:56:32,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:32,392 INFO L225 Difference]: With dead ends: 72 [2020-10-14 04:56:32,392 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 04:56:32,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:56:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 04:56:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-14 04:56:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 04:56:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-10-14 04:56:32,404 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 80 [2020-10-14 04:56:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:32,404 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-10-14 04:56:32,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:56:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-10-14 04:56:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 04:56:32,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:32,419 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:32,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 04:56:32,419 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:32,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:32,420 INFO L82 PathProgramCache]: Analyzing trace with hash 211533019, now seen corresponding path program 3 times [2020-10-14 04:56:32,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:32,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064974718] [2020-10-14 04:56:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:33,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:33,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:33,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:35,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:37,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:37,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 04:56:37,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 04:56:37,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:56:37,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:37,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:56:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:56:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:37,813 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-10-14 04:56:38,007 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-14 04:56:38,275 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 31 [2020-10-14 04:56:38,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:38,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:38,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:38,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:38,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:38,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:38,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:38,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:38,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:38,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:38,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:56:38,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:38,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:56:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:38,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:38,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:38,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:38,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:56:38,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:38,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:38,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:56:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:38,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:38,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:38,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:38,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:38,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:38,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:38,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:38,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:38,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:38,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:38,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:56:38,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:38,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:38,641 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 37 [2020-10-14 04:56:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:56:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:38,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:38,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:38,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:38,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:56:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:38,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:38,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 04:56:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:38,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:38,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:38,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:38,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:38,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:38,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:38,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:38,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:56:38,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:38,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:56:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:39,778 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 62 [2020-10-14 04:56:39,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 04:56:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:39,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:56:39,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:56:39,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:39,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:56:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:56:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:56:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:39,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:39,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:39,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:39,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:39,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:56:39,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:39,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:39,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 04:56:40,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064974718] [2020-10-14 04:56:40,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:40,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:56:40,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191372098] [2020-10-14 04:56:40,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:56:40,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:40,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:56:40,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:56:40,038 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 17 states. [2020-10-14 04:56:40,288 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-10-14 04:56:40,513 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-10-14 04:56:42,018 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-14 04:56:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:42,368 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-14 04:56:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:56:42,369 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2020-10-14 04:56:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:42,371 INFO L225 Difference]: With dead ends: 75 [2020-10-14 04:56:42,371 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 04:56:42,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:56:42,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 04:56:42,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2020-10-14 04:56:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 04:56:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-10-14 04:56:42,384 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 74 [2020-10-14 04:56:42,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:42,384 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-10-14 04:56:42,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:56:42,384 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-10-14 04:56:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 04:56:42,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:42,386 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:42,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 04:56:42,386 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:42,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:42,386 INFO L82 PathProgramCache]: Analyzing trace with hash -662878431, now seen corresponding path program 4 times [2020-10-14 04:56:42,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:42,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219729100] [2020-10-14 04:56:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:44,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:47,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:56:47,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 04:56:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 04:56:47,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:47,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:56:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:56:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:47,902 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-10-14 04:56:48,113 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2020-10-14 04:56:48,303 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-14 04:56:48,570 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 43 [2020-10-14 04:56:48,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:48,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:48,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:48,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:48,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:56:48,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:56:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:48,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:56:48,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:56:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:48,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:56:48,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:56:48,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:56:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,839 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-14 04:56:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:56:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:48,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:56:48,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 04:56:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:48,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:56:48,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:48,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 04:56:48,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:56:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:48,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:49,523 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 61 [2020-10-14 04:56:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 04:56:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:49,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:49,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:49,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:56:49,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 04:56:49,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:49,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:56:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:56:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:56:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:49,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:49,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:56:49,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:56:49,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:49,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:56:49,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:50,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:50,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:50,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:50,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:50,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:56:50,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:50,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 04:56:50,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219729100] [2020-10-14 04:56:50,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:50,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:56:50,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909912745] [2020-10-14 04:56:50,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:56:50,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:56:50,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:56:50,162 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand 20 states. [2020-10-14 04:56:50,622 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-14 04:56:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:52,494 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2020-10-14 04:56:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:56:52,495 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 81 [2020-10-14 04:56:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:52,496 INFO L225 Difference]: With dead ends: 127 [2020-10-14 04:56:52,497 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 04:56:52,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:56:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 04:56:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-10-14 04:56:52,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 04:56:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2020-10-14 04:56:52,518 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 81 [2020-10-14 04:56:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:52,518 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2020-10-14 04:56:52,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:56:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2020-10-14 04:56:52,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 04:56:52,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:52,520 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:52,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 04:56:52,520 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:52,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:52,521 INFO L82 PathProgramCache]: Analyzing trace with hash -606115431, now seen corresponding path program 2 times [2020-10-14 04:56:52,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:52,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863389163] [2020-10-14 04:56:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:53,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:54,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:54,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:54,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:55,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:56,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 04:56:57,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 04:56:57,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:56:57,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:56:57,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:57,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:56:57,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:57,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:57,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:57,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:57,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:57,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:57,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:57,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:57,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:57,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:56:57,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:56:57,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:57,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:57,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 04:56:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:57,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:57,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:57,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:57,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:57,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:57,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:57,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:56:57,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:56:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:57,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 04:56:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:57,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:57,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:57,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 04:56:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:57,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:57,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:56:57,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:56:57,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:56:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:56:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:58,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 04:56:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:58,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:58,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:58,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:56:58,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:58,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:58,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:56:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:58,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:56:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:58,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:58,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:58,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:58,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:58,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:58,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-14 04:56:58,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863389163] [2020-10-14 04:56:58,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:58,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:56:58,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428748190] [2020-10-14 04:56:58,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:56:58,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:58,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:56:58,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:56:58,048 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand 13 states. [2020-10-14 04:56:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:58,779 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2020-10-14 04:56:58,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:56:58,780 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 74 [2020-10-14 04:56:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:58,781 INFO L225 Difference]: With dead ends: 106 [2020-10-14 04:56:58,781 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 04:56:58,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:56:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 04:56:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-14 04:56:58,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 04:56:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-14 04:56:58,793 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 74 [2020-10-14 04:56:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:58,793 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-14 04:56:58,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:56:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-14 04:56:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 04:56:58,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:58,794 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:58,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 04:56:58,794 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:58,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:58,795 INFO L82 PathProgramCache]: Analyzing trace with hash 548183197, now seen corresponding path program 5 times [2020-10-14 04:56:58,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:58,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577018350] [2020-10-14 04:56:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:58,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:58,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:03,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:03,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 04:57:03,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 04:57:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 04:57:03,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:03,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:57:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:57:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,000 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-10-14 04:57:04,137 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-10-14 04:57:04,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 04:57:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:57:04,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:57:04,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:57:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:57:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 04:57:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:57:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 04:57:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:57:04,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:57:04,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:57:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:57:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:57:04,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:57:04,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:57:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 04:57:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:57:04,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:57:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 04:57:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:57:04,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:57:04,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:57:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 04:57:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:57:04,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:57:04,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:57:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:57:04,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:57:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:57:04,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:57:04,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:57:04,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:57:04,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:57:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:04,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:04,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:57:04,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:04,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:04,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:04,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:57:04,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 04:57:04,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577018350] [2020-10-14 04:57:04,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:04,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:04,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761805467] [2020-10-14 04:57:04,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:04,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:04,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:04,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:04,767 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 17 states. [2020-10-14 04:57:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:06,027 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-10-14 04:57:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:57:06,028 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2020-10-14 04:57:06,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:06,029 INFO L225 Difference]: With dead ends: 69 [2020-10-14 04:57:06,029 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 04:57:06,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2020-10-14 04:57:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 04:57:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 04:57:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 04:57:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 04:57:06,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2020-10-14 04:57:06,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:06,032 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 04:57:06,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 04:57:06,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 04:57:06,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 04:57:06,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 04:57:06,263 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 241 [2020-10-14 04:57:06,496 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 247 [2020-10-14 04:57:06,729 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 182 [2020-10-14 04:57:06,876 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 239 [2020-10-14 04:57:07,181 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 313 [2020-10-14 04:57:07,364 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 156 [2020-10-14 04:57:08,770 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 235 DAG size of output: 95 [2020-10-14 04:57:09,962 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 239 DAG size of output: 104 [2020-10-14 04:57:10,431 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 79 [2020-10-14 04:57:11,324 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 86 [2020-10-14 04:57:12,608 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 231 DAG size of output: 103 [2020-10-14 04:57:14,483 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 311 DAG size of output: 145 [2020-10-14 04:57:14,966 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 80 [2020-10-14 04:57:15,535 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 83 [2020-10-14 04:57:16,019 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 55 [2020-10-14 04:57:16,023 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 04:57:16,024 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 04:57:16,024 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 04:57:16,024 INFO L268 CegarLoopResult]: For program point L577(lines 577 578) no Hoare annotation was computed. [2020-10-14 04:57:16,024 INFO L268 CegarLoopResult]: For program point L579-2(lines 575 581) no Hoare annotation was computed. [2020-10-14 04:57:16,024 INFO L268 CegarLoopResult]: For program point L577-2(lines 577 578) no Hoare annotation was computed. [2020-10-14 04:57:16,024 INFO L264 CegarLoopResult]: At program point re_insertENTRY(lines 575 581) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-14 04:57:16,025 INFO L268 CegarLoopResult]: For program point re_insertEXIT(lines 575 581) no Hoare annotation was computed. [2020-10-14 04:57:16,025 INFO L268 CegarLoopResult]: For program point L579(lines 579 580) no Hoare annotation was computed. [2020-10-14 04:57:16,025 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 74 78) no Hoare annotation was computed. [2020-10-14 04:57:16,025 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 74 78) no Hoare annotation was computed. [2020-10-14 04:57:16,025 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 74 78) no Hoare annotation was computed. [2020-10-14 04:57:16,025 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 79 83) no Hoare annotation was computed. [2020-10-14 04:57:16,026 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 79 83) no Hoare annotation was computed. [2020-10-14 04:57:16,026 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 79 83) no Hoare annotation was computed. [2020-10-14 04:57:16,026 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 04:57:16,026 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 04:57:16,026 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 04:57:16,026 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 04:57:16,026 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 4) no Hoare annotation was computed. [2020-10-14 04:57:16,026 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 2 4) the Hoare annotation is: true [2020-10-14 04:57:16,027 INFO L268 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-14 04:57:16,027 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 2 4) no Hoare annotation was computed. [2020-10-14 04:57:16,027 INFO L268 CegarLoopResult]: For program point L609(line 609) no Hoare annotation was computed. [2020-10-14 04:57:16,027 INFO L264 CegarLoopResult]: At program point L607(line 607) the Hoare annotation is: (let ((.cse27 (+ |main_~#list~0.offset| 4))) (let ((.cse28 (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) .cse27)) (.cse29 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) .cse27))) (let ((.cse31 (+ .cse29 4)) (.cse32 (select |#memory_$Pointer$.base| main_~x~0.base)) (.cse34 (select |#memory_$Pointer$.base| .cse28))) (let ((.cse24 (= |main_~#list~0.base| main_~x~0.base)) (.cse22 (= .cse28 0)) (.cse30 (select .cse34 0)) (.cse26 (select .cse32 main_~x~0.offset)) (.cse33 (+ main_~x~0.offset 4)) (.cse21 (= (select .cse34 .cse31) 0)) (.cse23 (and (= |main_~#list~0.offset| .cse29) (= |main_~#list~0.base| .cse28)))) (let ((.cse3 (or .cse21 .cse23)) (.cse6 (= (select (select |#memory_$Pointer$.offset| main_~x~0.base) .cse33) 0)) (.cse7 (not (= main_~tail~0.base 0))) (.cse10 (= (select .cse32 .cse33) 0)) (.cse18 (not (= .cse26 0))) (.cse17 (= (select (select |#memory_$Pointer$.offset| .cse28) .cse31) 0)) (.cse0 (= (select |#valid| main_~n~0.base) 1)) (.cse1 (<= (+ |#StackHeapBarrier| 1) |main_~#list~0.base|)) (.cse2 (= (select |#valid| main_~x~0.base) 1)) (.cse4 (not (= |main_~#list~0.base| main_~n~0.base))) (.cse5 (= .cse30 |main_~#list~0.base|)) (.cse20 (not (= |main_~#list~0.base| 0))) (.cse25 (not (= .cse28 main_~x~0.base))) (.cse8 (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| .cse30) .cse27)) 0) 0)) (.cse9 (not .cse22)) (.cse11 (= main_~n~0.offset 0)) (.cse12 (not .cse24)) (.cse13 (= |main_#t~ret18| 0)) (.cse14 (= main_~tail~0.offset 0)) (.cse15 (= |main_~#list~0.base| main_~tail~0.base)) (.cse16 (= |main_~#list~0.offset| 0)) (.cse19 (= .cse29 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and .cse20 .cse15 (or .cse21 .cse22 .cse23) (or .cse22 .cse17) (or (and (not (= main_~tail~0.base main_~n~0.base)) .cse1 (<= main_~x~0.offset |main_~#list~0.offset|) .cse14 .cse5 .cse8 .cse24 .cse16 (<= |main_~#list~0.offset| main_~x~0.offset) .cse11 .cse19) (and .cse1 .cse14 .cse25 .cse24 (= main_~x~0.offset |main_~#list~0.offset|) .cse16 .cse19))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= main_~x~0.offset (select (select |#memory_$Pointer$.offset| .cse26) .cse27)) .cse10 .cse11 .cse12 .cse14 (= |main_~#list~0.base| .cse26) .cse15 (= (select (select |#memory_$Pointer$.base| .cse26) .cse27) main_~x~0.base) (= (select |#valid| |main_~#list~0.base|) 1) .cse16 (= .cse28 main_~n~0.base) .cse17 .cse18 .cse19) (and (or (and .cse21 .cse17) .cse23) .cse0 (not (= main_~n~0.base main_~x~0.base)) .cse1 .cse2 .cse4 .cse5 .cse20 .cse25 .cse8 .cse9 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse19))))))) [2020-10-14 04:57:16,028 INFO L264 CegarLoopResult]: At program point L609-2(line 609) the Hoare annotation is: (let ((.cse9 (+ |main_~#list~0.offset| 4))) (let ((.cse1 (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) .cse9)) (.cse6 (select |#memory_$Pointer$.base| main_~x~0.base)) (.cse8 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) .cse9))) (let ((.cse0 (not (= main_~x~0.offset 0))) (.cse5 (+ main_~x~0.offset 4)) (.cse4 (select |#memory_$Pointer$.offset| main_~x~0.base)) (.cse2 (+ .cse8 4)) (.cse7 (select .cse6 main_~x~0.offset)) (.cse3 (= .cse1 0))) (and (<= (+ |#StackHeapBarrier| 1) |main_~#list~0.base|) (= (select |#valid| main_~n~0.base) 1) (or (not (= main_~x~0.base 0)) .cse0) (not |main_#t~short20|) (= (select |#valid| main_~x~0.base) 1) (not (= |main_~#list~0.base| main_~n~0.base)) (or (= (select (select |#memory_$Pointer$.base| .cse1) .cse2) 0) .cse3 (= |main_~#list~0.base| .cse1)) (or (not (= .cse1 main_~x~0.base)) .cse0) (= (select .cse4 .cse5) 0) (= (select .cse6 .cse5) 0) (= |main_~#list~0.offset| (select .cse4 main_~x~0.offset)) (not (= |main_~#list~0.base| main_~x~0.base)) (not (= main_~n~0.base 0)) (= main_~tail~0.offset 0) (= |main_~#list~0.base| .cse7) (= |main_~#list~0.base| main_~tail~0.base) (= (select |#valid| |main_~#list~0.base|) 1) (= |main_~#list~0.offset| 0) (or .cse3 (= (select (select |#memory_$Pointer$.offset| .cse1) .cse2) 0)) (not (= .cse7 0)) (or (= main_~x~0.offset |main_~#list~0.offset|) (not .cse3)) (= .cse8 0) (= |main_~#list~0.offset| main_~n~0.offset))))) [2020-10-14 04:57:16,028 INFO L268 CegarLoopResult]: For program point L607-1(line 607) no Hoare annotation was computed. [2020-10-14 04:57:16,028 INFO L268 CegarLoopResult]: For program point L609-3(line 609) no Hoare annotation was computed. [2020-10-14 04:57:16,029 INFO L264 CegarLoopResult]: At program point L609-4(line 609) the Hoare annotation is: (let ((.cse0 (<= (+ |#StackHeapBarrier| 1) |main_~#list~0.base|)) (.cse9 (= main_~tail~0.offset 0)) (.cse8 (= |main_~#list~0.base| main_~x~0.base)) (.cse10 (= |main_~#list~0.base| main_~tail~0.base)) (.cse11 (= |main_~#list~0.offset| 0))) (or (let ((.cse13 (+ |main_~#list~0.offset| 4))) (let ((.cse2 (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) .cse13)) (.cse12 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) .cse13))) (let ((.cse1 (not (= main_~x~0.offset 0))) (.cse6 (+ main_~x~0.offset 4)) (.cse5 (select |#memory_$Pointer$.offset| main_~x~0.base)) (.cse7 (select |#memory_$Pointer$.base| main_~x~0.base)) (.cse3 (+ .cse12 4)) (.cse4 (= .cse2 0))) (and (= (select |#valid| main_~n~0.base) 1) .cse0 (or (not (= main_~x~0.base 0)) .cse1) (= (select |#valid| main_~x~0.base) 1) (not (= |main_~#list~0.base| main_~n~0.base)) (or (= (select (select |#memory_$Pointer$.base| .cse2) .cse3) 0) .cse4 (= |main_~#list~0.base| .cse2)) (= (select .cse5 .cse6) 0) (or (not (= .cse2 main_~x~0.base)) .cse1) (not (= main_~tail~0.base 0)) (= (select .cse7 .cse6) 0) (= |main_~#list~0.offset| (select .cse5 main_~x~0.offset)) (not .cse8) (not (= main_~n~0.base 0)) .cse9 (= |main_~#list~0.base| (select .cse7 main_~x~0.offset)) .cse10 (= (select |#valid| |main_~#list~0.base|) 1) .cse11 (or .cse4 (= (select (select |#memory_$Pointer$.offset| .cse2) .cse3) 0)) |main_#t~short20| (or (= main_~x~0.offset |main_~#list~0.offset|) (not .cse4)) (= .cse12 0) (= |main_~#list~0.offset| main_~n~0.offset))))) (and .cse0 (<= main_~x~0.offset |main_~#list~0.offset|) .cse9 (not (= |main_~#list~0.base| 0)) .cse8 .cse10 .cse11 (<= |main_~#list~0.offset| main_~x~0.offset) |main_#t~short20|))) [2020-10-14 04:57:16,029 INFO L268 CegarLoopResult]: For program point L609-5(line 609) no Hoare annotation was computed. [2020-10-14 04:57:16,029 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 590 613) no Hoare annotation was computed. [2020-10-14 04:57:16,029 INFO L268 CegarLoopResult]: For program point L599(lines 599 600) no Hoare annotation was computed. [2020-10-14 04:57:16,029 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 590 613) no Hoare annotation was computed. [2020-10-14 04:57:16,030 INFO L264 CegarLoopResult]: At program point L610(line 610) the Hoare annotation is: (let ((.cse0 (<= (+ |#StackHeapBarrier| 1) |main_~#list~0.base|)) (.cse9 (= main_~tail~0.offset 0)) (.cse8 (= |main_~#list~0.base| main_~x~0.base)) (.cse10 (= |main_~#list~0.base| main_~tail~0.base)) (.cse11 (= |main_~#list~0.offset| 0))) (or (let ((.cse13 (+ |main_~#list~0.offset| 4))) (let ((.cse2 (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) .cse13)) (.cse12 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) .cse13))) (let ((.cse1 (not (= main_~x~0.offset 0))) (.cse6 (+ main_~x~0.offset 4)) (.cse5 (select |#memory_$Pointer$.offset| main_~x~0.base)) (.cse7 (select |#memory_$Pointer$.base| main_~x~0.base)) (.cse3 (+ .cse12 4)) (.cse4 (= .cse2 0))) (and .cse0 (= (select |#valid| main_~n~0.base) 1) (or (not (= main_~x~0.base 0)) .cse1) (= (select |#valid| main_~x~0.base) 1) (not (= |main_~#list~0.base| main_~n~0.base)) (or (= (select (select |#memory_$Pointer$.base| .cse2) .cse3) 0) .cse4 (= |main_~#list~0.base| .cse2)) (= (select .cse5 .cse6) 0) (or (not (= .cse2 main_~x~0.base)) .cse1) (not (= main_~tail~0.base 0)) (= (select .cse7 .cse6) 0) (= |main_~#list~0.offset| (select .cse5 main_~x~0.offset)) (not .cse8) (not (= main_~n~0.base 0)) .cse9 (= |main_~#list~0.base| (select .cse7 main_~x~0.offset)) (= (select |#valid| |main_~#list~0.base|) 1) .cse10 .cse11 (or .cse4 (= (select (select |#memory_$Pointer$.offset| .cse2) .cse3) 0)) (or (= main_~x~0.offset |main_~#list~0.offset|) (not .cse4)) (= .cse12 0) (= |main_~#list~0.offset| main_~n~0.offset))))) (and .cse0 (<= main_~x~0.offset |main_~#list~0.offset|) .cse9 (not (= |main_~#list~0.base| 0)) .cse8 .cse10 .cse11 (<= |main_~#list~0.offset| main_~x~0.offset)))) [2020-10-14 04:57:16,030 INFO L264 CegarLoopResult]: At program point L610-1(line 610) the Hoare annotation is: (let ((.cse1 (<= (+ |#StackHeapBarrier| 1) |main_~#list~0.base|)) (.cse3 (= main_~tail~0.offset 0)) (.cse2 (= |main_~#list~0.base| main_~x~0.base)) (.cse4 (= |main_~#list~0.base| main_~tail~0.base)) (.cse5 (= |main_~#list~0.offset| 0))) (or (let ((.cse0 (+ |main_~#list~0.offset| 4))) (and (= main_~x~0.offset (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) .cse0)) (= (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) .cse0) main_~x~0.base) .cse1 (= (select |#valid| main_~n~0.base) 1) (= (select |#valid| main_~x~0.base) 1) (not (= |main_~#list~0.base| main_~n~0.base)) (not (= main_~tail~0.base 0)) (or (not (= main_~x~0.base 0)) (not (= main_~x~0.offset |main_~#list~0.offset|))) (not .cse2) (not (= main_~n~0.base 0)) .cse3 (= (select |#valid| |main_~#list~0.base|) 1) .cse4 .cse5 (= |main_~#list~0.offset| main_~n~0.offset))) (and .cse1 (<= main_~x~0.offset |main_~#list~0.offset|) .cse3 (not (= |main_~#list~0.base| 0)) .cse2 .cse4 .cse5 (<= |main_~#list~0.offset| main_~x~0.offset)))) [2020-10-14 04:57:16,031 INFO L264 CegarLoopResult]: At program point L608(line 608) the Hoare annotation is: (let ((.cse10 (+ |main_~#list~0.offset| 4))) (let ((.cse14 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) .cse10))) (let ((.cse3 (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) .cse10)) (.cse1 (+ .cse14 4))) (let ((.cse7 (<= (+ |#StackHeapBarrier| 1) |main_~#list~0.base|)) (.cse4 (not (= |main_~#list~0.base| 0))) (.cse8 (= main_~tail~0.offset 0)) (.cse5 (= |main_~#list~0.base| main_~tail~0.base)) (.cse12 (= |main_~#list~0.offset| 0)) (.cse6 (= (select (select |#memory_$Pointer$.offset| .cse3) .cse1) 0))) (or (let ((.cse2 (= .cse3 0)) (.cse0 (select |#memory_$Pointer$.base| .cse3))) (and (or (= (select .cse0 .cse1) 0) .cse2 (= |main_~#list~0.base| .cse3)) .cse4 .cse5 (or .cse2 .cse6) (let ((.cse11 (= |main_~#list~0.base| main_~x~0.base)) (.cse13 (= .cse14 0))) (or (let ((.cse9 (select .cse0 0))) (and (not (= main_~tail~0.base main_~n~0.base)) .cse7 (<= main_~x~0.offset |main_~#list~0.offset|) .cse8 (= .cse9 |main_~#list~0.base|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| .cse9) .cse10)) 0) 0) .cse11 .cse12 (<= |main_~#list~0.offset| main_~x~0.offset) (= main_~n~0.offset 0) .cse13)) (and .cse7 .cse8 (not (= .cse3 main_~x~0.base)) .cse11 (= main_~x~0.offset |main_~#list~0.offset|) .cse12 .cse13))))) (let ((.cse16 (select |#memory_$Pointer$.base| main_~x~0.base))) (let ((.cse15 (select .cse16 main_~x~0.offset)) (.cse17 (select (select |#memory_$Pointer$.base| main_~n~0.base) main_~n~0.offset))) (and .cse7 (= (select |#valid| main_~x~0.base) 1) .cse4 (= main_~x~0.offset (select (select |#memory_$Pointer$.offset| .cse15) .cse10)) (= (select .cse16 (+ main_~x~0.offset 4)) 0) (= .cse17 |main_~#list~0.base|) .cse8 (= |main_~#list~0.base| .cse15) .cse5 (not (= main_~x~0.base 0)) (= (select (select |#memory_$Pointer$.base| .cse15) .cse10) main_~x~0.base) (= (select |#valid| |main_~#list~0.base|) 1) .cse12 (= (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset) 0) (= .cse3 main_~n~0.base) .cse6 (= |main_~#list~0.offset| main_~n~0.offset) (= (select (select |#memory_$Pointer$.offset| .cse17) .cse10) main_~n~0.offset))))))))) [2020-10-14 04:57:16,031 INFO L268 CegarLoopResult]: For program point L608-1(line 608) no Hoare annotation was computed. [2020-10-14 04:57:16,031 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 590 613) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 04:57:16,031 INFO L268 CegarLoopResult]: For program point L604(lines 604 605) no Hoare annotation was computed. [2020-10-14 04:57:16,032 INFO L264 CegarLoopResult]: At program point L604-2(lines 596 606) the Hoare annotation is: (let ((.cse15 (select |#memory_$Pointer$.base| |main_~#list~0.base|)) (.cse7 (+ |main_~#list~0.offset| 4))) (let ((.cse13 (select .cse15 .cse7)) (.cse36 (select |#memory_$Pointer$.base| main_~n~0.base))) (let ((.cse14 (select .cse36 main_~n~0.offset)) (.cse19 (= |main_~#list~0.base| main_~n~0.base)) (.cse35 (select |#memory_$Pointer$.offset| main_~n~0.base)) (.cse16 (= |main_~#list~0.base| main_~x~0.base)) (.cse25 (= .cse13 0))) (let ((.cse12 (= (select |#valid| |main_~#list~0.base|) 1)) (.cse4 (<= (+ |#StackHeapBarrier| 1) |main_~#list~0.base|)) (.cse5 (= (select |#valid| main_~x~0.base) 1)) (.cse8 (not .cse25)) (.cse9 (not .cse16)) (.cse10 (or (and .cse19 (<= main_~n~0.offset |main_~#list~0.offset|) (<= |main_~#list~0.offset| main_~n~0.offset)) (let ((.cse37 (+ main_~n~0.offset 4))) (and (= (select .cse36 .cse37) 0) (= (select .cse35 .cse37) 0))))) (.cse11 (= main_~tail~0.offset 0)) (.cse20 (= .cse14 |main_~#list~0.base|))) (let ((.cse3 (let ((.cse34 (select .cse35 main_~n~0.offset))) (let ((.cse33 (= .cse34 0)) (.cse32 (= .cse14 main_~n~0.base))) (or (and .cse32 .cse19 (not (= main_~n~0.offset 4)) .cse33) (and (not .cse32) .cse33 .cse20) (and .cse32 (= .cse34 main_~n~0.offset) (= main_~n~0.offset .cse7) .cse20))))) (.cse0 (= |main_~#list~0.base| main_~tail~0.base)) (.cse1 (let ((.cse21 (= |main_~#list~0.offset| main_~n~0.offset))) (let ((.cse18 (let ((.cse30 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) .cse7))) (let ((.cse29 (select |#memory_$Pointer$.base| .cse13)) (.cse31 (+ .cse30 4))) (let ((.cse24 (= (select .cse29 .cse31) 0)) (.cse26 (= (select (select |#memory_$Pointer$.offset| .cse13) .cse31) 0)) (.cse22 (not (= main_~tail~0.base 0))) (.cse23 (not (= |main_~#list~0.base| 0))) (.cse27 (= .cse30 0))) (or (and .cse4 (<= main_~x~0.offset |main_~#list~0.offset|) (<= |main_~#list~0.offset| 0) .cse11 .cse22 .cse23 .cse16 (or .cse24 .cse25) (<= |main_~#list~0.offset| main_~x~0.offset) (or .cse25 .cse26) .cse27) (let ((.cse28 (select .cse29 0))) (and (or (and .cse24 .cse26) (= |main_~#list~0.base| .cse13)) (not (= main_~tail~0.base main_~n~0.base)) (= (select |#valid| main_~n~0.base) 1) .cse4 (not (= main_~n~0.base main_~x~0.base)) .cse5 (not .cse19) (not (= .cse14 0)) (= .cse28 |main_~#list~0.base|) .cse22 .cse23 (not (= .cse13 main_~x~0.base)) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| .cse28) .cse7)) 0) 0) .cse8 .cse9 .cse10 .cse11 (= main_~n~0.offset main_~tail~0.offset) .cse27 .cse21)))))))) (or (and (= |#memory_$Pointer$.base| (let ((.cse17 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (store |old(#memory_$Pointer$.base)| .cse17 (select |#memory_$Pointer$.base| .cse17)))) .cse18 .cse12) (and (not (= main_~n~0.base 0)) (or .cse19 .cse20) .cse18 .cse12 .cse8 .cse21))))) (.cse2 (<= 0 |main_~#list~0.offset|))) (or (and .cse0 .cse1 .cse2 .cse3) (let ((.cse6 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset))) (and .cse4 .cse5 (= main_~x~0.offset (select (select |#memory_$Pointer$.offset| .cse6) .cse7)) .cse8 (= |main_~#list~0.offset| (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)) (= main_~n~0.offset 0) .cse9 .cse10 .cse11 (= |main_~#list~0.base| .cse6) .cse0 (= (select (select |#memory_$Pointer$.base| .cse6) .cse7) main_~x~0.base) .cse12 (= .cse13 main_~n~0.base) (not (= .cse6 0)) (= (select (select |#memory_$Pointer$.offset| .cse14) .cse7) main_~n~0.offset) .cse3)) (and (= (select .cse15 |main_~#list~0.offset|) 0) .cse16 .cse0 .cse1 .cse2))))))) [2020-10-14 04:57:16,032 INFO L264 CegarLoopResult]: At program point L596-2(lines 596 606) the Hoare annotation is: (let ((.cse17 (+ |main_~#list~0.offset| 4))) (let ((.cse21 (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) .cse17))) (let ((.cse23 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) .cse17)) (.cse26 (select |#memory_$Pointer$.base| .cse21))) (let ((.cse3 (= .cse21 0)) (.cse24 (select .cse26 0)) (.cse22 (select |#memory_$Pointer$.offset| .cse21)) (.cse25 (+ .cse23 4))) (let ((.cse2 (= (select .cse26 .cse25) 0)) (.cse5 (= (select .cse22 .cse25) 0)) (.cse4 (and (= |main_~#list~0.offset| .cse23) (= |main_~#list~0.base| .cse21))) (.cse6 (<= (+ |#StackHeapBarrier| 1) |main_~#list~0.base|)) (.cse15 (= (select |#valid| main_~x~0.base) 1)) (.cse8 (= .cse24 |main_~#list~0.base|)) (.cse0 (not (= |main_~#list~0.base| 0))) (.cse14 (not (= .cse21 main_~x~0.base))) (.cse9 (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| .cse24) .cse17)) 0) 0)) (.cse18 (not .cse3)) (.cse12 (= main_~n~0.offset 0)) (.cse10 (= |main_~#list~0.base| main_~x~0.base)) (.cse7 (= main_~tail~0.offset 0)) (.cse1 (= |main_~#list~0.base| main_~tail~0.base)) (.cse11 (= |main_~#list~0.offset| 0)) (.cse13 (= .cse23 0))) (or (and .cse0 .cse1 (or .cse2 .cse3 .cse4) (or .cse3 .cse5) (or (and (not (= main_~tail~0.base main_~n~0.base)) .cse6 (<= main_~x~0.offset |main_~#list~0.offset|) .cse7 .cse8 .cse9 .cse10 .cse11 (<= |main_~#list~0.offset| main_~x~0.offset) .cse12 .cse13) (and .cse6 .cse7 .cse14 .cse10 (= main_~x~0.offset |main_~#list~0.offset|) .cse11 .cse13))) (let ((.cse19 (select |#memory_$Pointer$.base| main_~x~0.base))) (let ((.cse16 (select .cse19 main_~x~0.offset)) (.cse20 (select (select |#memory_$Pointer$.base| main_~n~0.base) main_~n~0.offset))) (and .cse6 .cse15 .cse0 (= main_~x~0.offset (select (select |#memory_$Pointer$.offset| .cse16) .cse17)) .cse18 (= (select .cse19 (+ main_~x~0.offset 4)) 0) (= .cse20 |main_~#list~0.base|) .cse7 (= |main_~#list~0.base| .cse16) .cse1 (= (select (select |#memory_$Pointer$.base| .cse16) .cse17) main_~x~0.base) (= (select |#valid| |main_~#list~0.base|) 1) .cse11 (= .cse21 main_~n~0.base) .cse5 (= (select .cse22 .cse23) 0) (= |main_~#list~0.offset| main_~n~0.offset) (= (select (select |#memory_$Pointer$.offset| .cse20) .cse17) main_~n~0.offset)))) (and (or (and .cse2 .cse5) .cse4) (= (select |#valid| main_~n~0.base) 1) (not (= main_~n~0.base main_~x~0.base)) .cse6 .cse15 (not (= |main_~#list~0.base| main_~n~0.base)) .cse8 .cse0 .cse14 .cse9 .cse18 .cse12 (not .cse10) .cse7 .cse1 .cse11 .cse13))))))) [2020-10-14 04:57:16,033 INFO L264 CegarLoopResult]: At program point L611(line 611) the Hoare annotation is: (let ((.cse6 (div |main_#t~ret21| 256))) (let ((.cse0 (<= (+ |#StackHeapBarrier| 1) |main_~#list~0.base|)) (.cse7 (= main_~tail~0.offset 0)) (.cse4 (not (= main_~tail~0.base 0))) (.cse8 (= |main_~#list~0.base| main_~tail~0.base)) (.cse9 (= |main_~#list~0.offset| 0)) (.cse5 (<= .cse6 0))) (or (and (= (select |#valid| main_~n~0.base) 1) .cse0 (= (select |#valid| main_~x~0.base) 1) (let ((.cse2 (not (= main_~x~0.base 0)))) (or (let ((.cse1 (+ |main_~#list~0.offset| 4))) (and (= main_~x~0.offset (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) .cse1)) (or (and .cse2 (not (= (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) .cse1) 0))) (not (= main_~x~0.offset |main_~#list~0.offset|))))) (and (let ((.cse3 (= |main_~#list~0.base| (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset)))) (or (and .cse3 (not (= main_~x~0.offset 0))) (and .cse3 .cse2))) (= (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset) 0)))) (not (= |main_~#list~0.base| main_~n~0.base)) .cse4 .cse5 (not (= |main_~#list~0.base| main_~x~0.base)) (not (= main_~n~0.base 0)) (not (= |main_#t~ret21| (* .cse6 256))) .cse7 .cse8 (= (select |#valid| |main_~#list~0.base|) 1) .cse9 (= |main_~#list~0.offset| main_~n~0.offset)) (and .cse0 (<= 1 |main_#t~ret21|) .cse7 .cse4 .cse8 .cse9 .cse5)))) [2020-10-14 04:57:16,033 INFO L268 CegarLoopResult]: For program point L611-1(line 611) no Hoare annotation was computed. [2020-10-14 04:57:16,033 INFO L271 CegarLoopResult]: At program point is_list_containing_xENTRY(lines 582 589) the Hoare annotation is: true [2020-10-14 04:57:16,033 INFO L264 CegarLoopResult]: At program point L587(line 587) the Hoare annotation is: (let ((.cse0 (+ |is_list_containing_x_#in~l.offset| 4))) (let ((.cse1 (select (select |#memory_$Pointer$.base| |is_list_containing_x_#in~l.base|) .cse0))) (and (= |is_list_containing_x_#in~x.offset| is_list_containing_x_~x.offset) (= (select (select |#memory_$Pointer$.offset| |is_list_containing_x_#in~l.base|) .cse0) |is_list_containing_x_#t~mem13.offset|) (= is_list_containing_x_~x.base |is_list_containing_x_#in~x.base|) (= is_list_containing_x_~l.base |is_list_containing_x_#in~l.base|) (<= is_list_containing_x_~l.offset |is_list_containing_x_#in~l.offset|) (= .cse1 |is_list_containing_x_#t~mem13.base|) (<= |is_list_containing_x_#in~l.offset| is_list_containing_x_~l.offset) (or (not (= |is_list_containing_x_#t~mem13.offset| 0)) (not (= .cse1 0))) (or (not (= |is_list_containing_x_#in~x.offset| |is_list_containing_x_#in~l.offset|)) (not (= |is_list_containing_x_#in~l.base| |is_list_containing_x_#in~x.base|)))))) [2020-10-14 04:57:16,033 INFO L268 CegarLoopResult]: For program point L586(lines 586 587) no Hoare annotation was computed. [2020-10-14 04:57:16,033 INFO L268 CegarLoopResult]: For program point L587-1(line 587) no Hoare annotation was computed. [2020-10-14 04:57:16,033 INFO L268 CegarLoopResult]: For program point L584(lines 584 585) no Hoare annotation was computed. [2020-10-14 04:57:16,033 INFO L268 CegarLoopResult]: For program point is_list_containing_xFINAL(lines 582 589) no Hoare annotation was computed. [2020-10-14 04:57:16,033 INFO L268 CegarLoopResult]: For program point is_list_containing_xEXIT(lines 582 589) no Hoare annotation was computed. [2020-10-14 04:57:16,033 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-10-14 04:57:16,033 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 12) no Hoare annotation was computed. [2020-10-14 04:57:16,034 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-14 04:57:16,034 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-10-14 04:57:16,034 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 12) no Hoare annotation was computed. [2020-10-14 04:57:16,034 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-10-14 04:57:16,034 INFO L268 CegarLoopResult]: For program point L572(lines 572 573) no Hoare annotation was computed. [2020-10-14 04:57:16,034 INFO L268 CegarLoopResult]: For program point L570(lines 570 571) no Hoare annotation was computed. [2020-10-14 04:57:16,034 INFO L268 CegarLoopResult]: For program point L572-2(lines 568 574) no Hoare annotation was computed. [2020-10-14 04:57:16,034 INFO L268 CegarLoopResult]: For program point L570-2(lines 570 571) no Hoare annotation was computed. [2020-10-14 04:57:16,035 INFO L264 CegarLoopResult]: At program point removeENTRY(lines 568 574) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-14 04:57:16,035 INFO L268 CegarLoopResult]: For program point removeEXIT(lines 568 574) no Hoare annotation was computed. [2020-10-14 04:57:16,042 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:246) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translateStore(Term2Expression.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:157) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 04:57:16,046 INFO L168 Benchmark]: Toolchain (without parser) took 148338.91 ms. Allocated memory was 145.8 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 100.1 MB in the beginning and 240.0 MB in the end (delta: -139.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-10-14 04:57:16,046 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 04:57:16,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.87 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 99.7 MB in the beginning and 168.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:57:16,047 INFO L168 Benchmark]: Boogie Preprocessor took 66.75 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 164.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:57:16,048 INFO L168 Benchmark]: RCFGBuilder took 611.31 ms. Allocated memory is still 201.9 MB. Free memory was 164.2 MB in the beginning and 117.2 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:57:16,048 INFO L168 Benchmark]: TraceAbstraction took 147070.45 ms. Allocated memory was 201.9 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 116.3 MB in the beginning and 240.0 MB in the end (delta: -123.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2020-10-14 04:57:16,050 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 585.87 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 99.7 MB in the beginning and 168.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.75 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 164.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 611.31 ms. Allocated memory is still 201.9 MB. Free memory was 164.2 MB in the beginning and 117.2 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 147070.45 ms. Allocated memory was 201.9 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 116.3 MB in the beginning and 240.0 MB in the end (delta: -123.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...